getfem_contact_and_friction_nodal.h

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/* -*- c++ -*- (enables emacs c++ mode) */
/*===========================================================================
 
 Copyright (C) 2004-2026 Yves Renard, Konstantinos Poulios.
 
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/** @file getfem_contact_and_friction_nodal.h
    @author Yves Renard <Yves.Renard@insa-lyon.fr>
    @author Konstantinos Poulios <logari81@googlemail.com>
    @date July 6, 2004.
    @brief Unilateral contact and Coulomb friction condition brick.
 */
#ifndef GETFEM_CONTACT_AND_FRICTION_NODAL_H__
#define GETFEM_CONTACT_AND_FRICTION_NODAL_H__
 
#include "getfem_models.h"
 
namespace getfem {
 
 typedef gmm::row_matrix<gmm::rsvector<scalar_type> > CONTACT_B_MATRIX;
 
  /** Add a frictionless contact condition to the model. If U is the vector
      of degrees of freedom on which the unilateral constraint is applied,
      the matrix `BN` has to be such that this condition is defined by
      $B_N U \le gap$. The constraint is prescribed thank to a multiplier
      `multname_n` whose dimension should be equal to the number of lines of
      `BN`. The augmentation parameter `r` should be chosen in a range of
      acceptabe values (see Getfem user documentation). `dataname_gap` is an
      optional parameter representing the initial gap. It can be a single value
      or a vector of value. `dataname_alpha` is an optional homogenization
      parameter for the augmentation parameter
      (see Getfem user documentation). The parameter `aug_version` indicates
      the augmentation strategy : 1 for the non-symmetric Alart-Curnier
      augmented Lagrangian, 2 for the symmetric one, 3 for the unsymmetric
      method with augmented multiplier.
  */
  size_type add_basic_contact_brick
  (model &md, const std::string &varname_u, const std::string &multname_n,
   const std::string &dataname_r, CONTACT_B_MATRIX &BN,
   std::string dataname_gap = "", std::string dataname_alpha = "",
   int aug_version=1, bool Hughes_stabilized=false);
  
  /** Add a frictionless contact condition to the model between two deformable
      bodies. If U1, U2 are the vector
      of degrees of freedom on which the unilateral constraint is applied,
      the matrices `BN1` and `BN2` have to be such that this condition
      is defined by
      $B_{N1} U_1 B_{N2} U_2 + \le gap$. The constraint is prescribed thank
      to a multiplier
      `multname_n` whose dimension should be equal to the number of lines of
      `BN`. The augmentation parameter `r` should be chosen in a range of
      acceptabe values (see Getfem user documentation). `dataname_gap` is an
      optional parameter representing the initial gap. It can be a single value
      or a vector of value. `dataname_alpha` is an optional homogenization
      parameter for the augmentation parameter
      (see Getfem user documentation). The parameter `aug_version` indicates
      the augmentation strategy : 1 for the non-symmetric Alart-Curnier
      augmented Lagrangian, 2 for the symmetric one, 3 for the unsymmetric
      method with augmented multiplier.
  */
  size_type add_basic_contact_brick_two_deformable_bodies
  (model &md, const std::string &varname_u1, const std::string &varname_u2,
   const std::string &multname_n,
   const std::string &dataname_r, CONTACT_B_MATRIX &BN1, CONTACT_B_MATRIX &BN2,
   std::string dataname_gap = "", std::string dataname_alpha = "",
   int aug_version=1, bool Hughes_stabilized=false);
  
 
 
  /** Add a contact with friction condition to the model. If U is the vector
      of degrees of freedom on which the condition is applied,
      the matrix `BN` has to be such that the contact condition is defined
      by $B_N U \le gap$ and `BT` have to be such that the relative tangential
      displacement is $B_T U$. The matrix `BT` should have as many rows as
      `BN` multiplied by $d-1$ where $d$ is the domain dimension.
      The contact condition is prescribed thank to a multiplier
      `multname_n` whose dimension should be equal to the number of rows of
      `BN` and the friction condition by a mutliplier `multname_t` whose size
      should be the number of rows of `BT`.
      The parameter `dataname_friction_coeff` describes the friction
      coefficient. It could be a scalar or a vector describing the
      coefficient on each contact condition.
      The augmentation parameter
      `r` should be chosen in a range of acceptabe values
      (see Getfem user documentation). `dataname_gap` is an
      optional parameter representing the initial gap. It can be a single value
      or a vector of value. `dataname_alpha` is an optional homogenization
      parameter for the augmentation parameter
      (see Getfem user documentation). The parameter `aug_version`
      indicates the augmentation strategy : 1 for the non-symmetric
      Alart-Curnier augmented Lagrangian, 2 for the symmetric one,
      3 for the unsymmetric
      method with augmented multiplier and 4 for the unsymmetric
      method with augmented multiplier and De Saxce projection.
  */
  size_type add_basic_contact_brick
  (model &md, const std::string &varname_u, const std::string &multname_n,
   const std::string &multname_t, const std::string &dataname_r,
   CONTACT_B_MATRIX &BN, CONTACT_B_MATRIX &BT,
   std::string dataname_friction_coeff,
   std::string dataname_gap="", std::string dataname_alpha="",
   int aug_version=1, bool Tresca_version=false, const std::string dataname_threshold="",
   std::string dataname_gamma="", std::string dataname_wt="", bool Hughes_stabilized=false);
 
 
 
  /** Can be used to change the matrix BN of a basic contact/friction brick
   */
  CONTACT_B_MATRIX &contact_brick_set_BN(model &md, size_type indbrick);
 
  /** Can be used to set the stationary option
   */
  void contact_brick_set_stationary(model &md, size_type indbrick);
 
  /** Can be used to change the matrix DN of a basic contact/friction brick
   */
  CONTACT_B_MATRIX &contact_brick_set_DN(model &md, size_type indbrick);
 
 /** Can be used to change the matrix DT of a basic contact/friction brick
   */
  CONTACT_B_MATRIX &contact_brick_set_DT(model &md, size_type indbrick);
 
  /** Can be used to change the matrix BT of a basic contact/friction brick
   */
  CONTACT_B_MATRIX &contact_brick_set_BT(model &md, size_type indbrick);
 
/** Add Hughes stabilized frictionless contact condition to the model. If U
    is the vector of degrees of freedom on which the unilateral constraint is applied,
    and Lambda the multiplier Vector of contact force.Then Hughes stabilized frictionless
    contact condition is defined by the matrix `BN` and 'DN' have to be such that this
    condition is defined by $B_N U - DN Lambda \le 0$. where 'DN' is the masse matrix
    relative to stabilzed term.
    The augmentation parameter `r` should be chosen in a range of acceptabe values.
    `dataname_gap` is an optional parameter representing the initial gap. It can be
    a single value or a vector of value. `dataname_alpha` is an optional homogenization
    parameter for the augmentation parameter. The parameter `aug_version`
    indicates the augmentation strategy : 1 for the non-symmetric
      Alart-Curnier augmented Lagrangian, 2 for the symmetric one,
      3 for the unsymmetric method with augmented multiplier.
  */
   inline size_type add_Hughes_stab_basic_contact_brick
   (model &md, const std::string &varname_u, const std::string &multname_n,
    const std::string &dataname_r, CONTACT_B_MATRIX &BN, CONTACT_B_MATRIX &DN,
    std::string dataname_gap="", std::string dataname_alpha="",
    int aug_version=1) {
 
    size_type indbrick = add_basic_contact_brick
      (md, varname_u, multname_n, dataname_r, BN,
       dataname_gap, dataname_alpha, aug_version, true);
    gmm::resize(contact_brick_set_DN(md, indbrick),
                gmm::mat_nrows(DN), gmm::mat_ncols(DN));
    gmm::copy(DN, contact_brick_set_DN(md, indbrick));
    return indbrick;
   }
 
  /**  Add Hughes stabilized friction contact condition to the model (broken ?). If U is the vector
      of degrees of freedom on which the condition is applied,
      the matrix `BN` have to be such that the contact condition is defined
      by $B_N U+DN Lambda \le 0$ (where 'DN' is the masse matrix
      relative to stabilzed term) and `BT` have to be such that the relative
      tangential displacement is $B_T U$. The matrix `BT` should have as many
      rows as `BN` multiplied b $d-1$ where $d$ is the domain dimension.
      The contact condition is prescribed thank to a multiplier
      `multname_n` whose dimension should be equal to the number of rows of
      `BN` and the friction condition by a mutliplier `multname_t` whise size
      should be the number of rows of `BT`.
      The parameter `dataname_friction_coeff` describe the friction
      coefficient. It could be a scalar or a vector describing the
      coefficient on each contact condition.
      The augmentation parameter
      `r` should be chosen in a range of acceptabe values
      (see Getfem user documentation). `dataname_gap` is an
      optional parameter representing the initial gap. It can be a single value
      or a vector of value. `dataname_alpha` is an optional homogenization
      parameter for the augmentation parameter
      (see Getfem user documentation). The parameter `aug_version`
      indicates the augmentation strategy : 1 for the non-symmetric
      Alart-Curnier augmented Lagrangian, 2 for the symmetric one,
      3 for the unsymmetric
      method with augmented multiplier and 4 for the unsymmetric
      method with augmented multiplier and De Saxce projection.
   **/
  inline size_type add_Hughes_stab_basic_contact_brick
  (model &md, const std::string &varname_u, const std::string &multname_n,
   const std::string &multname_t, const std::string &dataname_r,
   CONTACT_B_MATRIX &BN, CONTACT_B_MATRIX &BT, CONTACT_B_MATRIX &DN,CONTACT_B_MATRIX &DT,
   std::string dataname_friction_coeff,
   std::string dataname_gap="", std::string dataname_alpha="",
   int aug_version=1, bool Tresca_version=false, const std::string dataname_threshold="") {
 
    size_type indbrick = add_basic_contact_brick
      (md, varname_u, multname_n, multname_t, dataname_r, BN, BT,
       dataname_friction_coeff, dataname_gap, dataname_alpha,
       aug_version, Tresca_version, dataname_threshold, "", "", true);
    gmm::resize(contact_brick_set_DN(md, indbrick),
                gmm::mat_nrows(DN), gmm::mat_ncols(DN));
    gmm::copy(DN, contact_brick_set_DN(md, indbrick));
 
    gmm::resize(contact_brick_set_DT(md, indbrick),
                gmm::mat_nrows(DT), gmm::mat_ncols(DT));
    gmm::copy(DT, contact_brick_set_DT(md, indbrick));
    return indbrick;
  }
 
 
 
  /** Add a frictionless contact condition with a rigid obstacle
      to the model. The condition is applied on the variable `varname_u`
      on the boundary corresponding to `region`. The rigid obstacle should
      be described with the string `obstacle` being a signed distance to
      the obstacle. This string should be an expression where the coordinates
      are 'x', 'y' in 2D and 'x', 'y', 'z' in 3D. For instance, if the rigid
      obstacle correspond to $z \le 0$, the corresponding signed distance will
      be simply "z". `multname_n` should be a fixed size variable whose size is
      the number of degrees of freedom on boundary `region`. It represents the
      contact equivalent nodal forces.
      The augmentation parameter `r` should be chosen in a
      range of acceptabe values (close to the Young modulus of the elastic
      body, see Getfem user documentation). The parameter `aug_version`
      indicates the augmentation strategy : 1 for the non-symmetric
      Alart-Curnier augmented Lagrangian, 2 for the symmetric one,
      3 for the unsymmetric
      method with augmented multiplier.
      Basically, this brick computes the matrix BN
      and the vectors gap and alpha and calls the basic contact brick.
  */
  size_type add_nodal_contact_with_rigid_obstacle_brick
  (model &md, const mesh_im &mim, const std::string &varname_u,
   const std::string &multname_n, const std::string &dataname_r,
   size_type region, const std::string &obstacle, int aug_version=1);
 
 
  /** Add a contact with friction condition with a rigid obstacle
      to the model. The condition is applied on the variable `varname_u`
      on the boundary corresponding to `region`. The rigid obstacle should
      be described with the string `obstacle` being a signed distance to
      the obstacle. This string should be an expression where the coordinates
      are 'x', 'y' in 2D and 'x', 'y', 'z' in 3D. For instance, if the rigid
      obstacle correspond to $z \le 0$, the corresponding signed distance will
      be simply "z". `multname_n` should be a fixed size variable whose size is
      the number of degrees of freedom on boundary `region`. It represents the
      contact equivalent nodal forces.
      `multname_t` should be a fixed size variable whose size is
      the number of degrees of freedom on boundary `region` multiplied by
      $d-1$ where $d$ is the domain dimension. It represents the
      friction equivalent nodal forces.
      The augmentation parameter `r` should be chosen in a
      range of acceptabe values (close to the Young modulus of the elastic
      body, see Getfem user documentation). `dataname_friction_coeff` is
      the friction coefficient. It could be a scalar or a vector of values
      representing the friction coefficient on each contact node.
      The parameter `aug_version`
      indicates the augmentation strategy : 1 for the non-symmetric
      Alart-Curnier augmented Lagrangian, 2 for the symmetric one,
      3 for the unsymmetric
      method with augmented multiplier and 4 for the unsymmetric
      method with augmented multiplier and De Saxce projection.
      Basically, this brick computes the matrix BN
      and the vectors gap and alpha and calls the basic contact brick.
  */
  size_type add_nodal_contact_with_rigid_obstacle_brick
  (model &md, const mesh_im &mim, const std::string &varname_u,
   const std::string &multname_n, const std::string &multname_t,
   const std::string &dataname_r, const std::string &dataname_friction_coeff,
   size_type region, const std::string &obstacle, int aug_version=1);
 
 
  /** Add a frictionless contact condition between two faces of one or two
      elastic bodies. The condition is applied on the variable `varname_u` or
      the variables `varname_u1` and `varname_u2` depending if a single or
      two distinct displacement fields are given. Vectors `rg1` and `rg2`
      contain pairs of regions expected to come in contact with each other. In
      case of a single region per side, `rg1` and `rg2` can be given as normal
      integers. In the single displacement variable case the regions defined in
      both `rg1` and `rg2` refer to the variable `varname_u`. In the case of
      two displacement variables, `rg1` refers to `varname_u1` and `rg2` refers
      to `varname_u2`. `multname_n` should be a fixed size variable whose size
      is the number of degrees of freedom on those regions among the ones
      defined in `rg1` and `rg2` which are characterized as "slaves". It
      represents the contact equivalent nodal forces. The augmentation
      parameter `r` should be chosen in a range of acceptabe values (close to
      the Young modulus of the elastic body, see Getfem user documentation).
      The optional parameters `slave1` and `slave2` declare if the regions
      defined in `rg1` and `rg2` are correspondingly considered as "slaves".
      By default `slave1` is true and `slave2` is false, i.e. `rg1` contains
      the slave surfaces, while 'rg2' the master surfaces. Preferably only
      one of `slave1` and `slave2` is set to true. The parameter `aug_version`
      indicates the augmentation strategy : 1 for the non-symmetric
      Alart-Curnier augmented Lagrangian, 2 for the symmetric one,
      3 for the unsymmetric
      method with augmented multiplier.
      Basically, this brick computes the matrix BN and the vectors gap and
      alpha and calls the basic contact brick.
  */
  size_type add_nodal_contact_between_nonmatching_meshes_brick
  (model &md, const mesh_im &mim1, const mesh_im &mim2,
   const std::string &varname_u1, const std::string &varname_u2,
   std::string &multname_n, const std::string &dataname_r,
   const std::vector<size_type> &rg1, const std::vector<size_type> &rg2,
   bool slave1=true, bool slave2=false, int aug_version=1);
 
  inline size_type add_nodal_contact_between_nonmatching_meshes_brick
  (model &md, const mesh_im &mim1, const mesh_im &mim2,
   const std::string &varname_u1, const std::string &varname_u2,
   std::string &multname_n, const std::string &dataname_r,
   size_type rg1, size_type rg2, bool slave1=true, bool slave2=false,
   int aug_version=1) {
 
    std::vector<size_type> vrg1(1,rg1);
    std::vector<size_type> vrg2(1,rg2);
    return add_nodal_contact_between_nonmatching_meshes_brick
      (md, mim1, mim2, varname_u1, varname_u2, multname_n, dataname_r,
       vrg1, vrg2, slave1, slave2, aug_version);
  }
 
  inline size_type add_nodal_contact_between_nonmatching_meshes_brick
  (model &md, const mesh_im &mim, const std::string &varname_u,
   std::string &multname_n, const std::string &dataname_r,
   const std::vector<size_type> &rg1, const std::vector<size_type> &rg2,
   bool slave1=true, bool slave2=false, int aug_version=1) {
 
    return add_nodal_contact_between_nonmatching_meshes_brick
      (md, mim, mim, varname_u, varname_u, multname_n, dataname_r,
       rg1, rg2, slave1, slave2, aug_version);
  }
 
  inline size_type add_nodal_contact_between_nonmatching_meshes_brick
  (model &md, const mesh_im &mim, const std::string &varname_u,
   std::string &multname_n, const std::string &dataname_r,
   size_type rg1, size_type rg2, bool slave1=true, bool slave2=false,
   int aug_version=1) {
 
    std::vector<size_type> vrg1(1,rg1);
    std::vector<size_type> vrg2(1,rg2);
    return add_nodal_contact_between_nonmatching_meshes_brick
      (md, mim, mim, varname_u, varname_u, multname_n, dataname_r,
       vrg1, vrg2, slave1, slave2, aug_version);
  }
 
 
  /** Add a contact with friction condition between two faces of one or two
      elastic bodies. The condition is applied on the variable `varname_u` or
      the variables `varname_u1` and `varname_u2` depending if a single or
      two distinct displacement fields are given. Vectors `rg1` and `rg2`
      contain pairs of regions expected to come in contact with each other. In
      case of a single region per side, `rg1` and `rg2` can be given as normal
      integers. In the single displacement variable case the regions defined in
      both `rg1` and `rg2` refer to the variable `varname_u`. In the case of
      two displacement variables, `rg1` refers to `varname_u1` and `rg2` refers
      to `varname_u2`. `multname_n` should be a fixed size variable whose size
      is the number of degrees of freedom on those regions among the ones
      defined in `rg1` and `rg2` which are characterized as "slaves". It
      represents the contact equivalent nodal normal forces. `multname_t`
      should be a fixed size variable whose size corresponds to the size of
      `multname_n` multiplied by qdim - 1 . It represents the contact
      equivalent nodal tangent (frictional) forces. The augmentation parameter
      `r` should be chosen in a range of acceptabe values (close to the Young
      modulus of the elastic body, see Getfem user documentation). The friction
      coefficient stored in the parameter `friction_coeff` is either a single
      value or a vector of the same size as `multname_n`. The optional
      parameters `slave1` and `slave2` declare if the regions defined in `rg1`
      and `rg2` are correspondingly considered as "slaves". By default `slave1`
      is true and `slave2` is false, i.e. `rg1` contains the slave surfaces,
      while 'rg2' the master surfaces. Preferably only one of `slave1` and
      `slave2` is set to true.  The parameter `aug_version`
      indicates the augmentation strategy : 1 for the non-symmetric
      Alart-Curnier augmented Lagrangian, 2 for the symmetric one,
      3 for the unsymmetric
      method with augmented multiplier and 4 for the unsymmetric
      method with augmented multiplier and De Saxce projection.
      Basically, this brick computes the matrices BN and BT as well the vectors
      gap and alpha and calls the basic contact brick.
  */
  size_type add_nodal_contact_between_nonmatching_meshes_brick
  (model &md, const mesh_im &mim1, const mesh_im &mim2,
   const std::string &varname_u1, const std::string &varname_u2,
   std::string &multname_n, std::string &multname_t,
   const std::string &dataname_r, const std::string &dataname_friction_coeff,
   const std::vector<size_type> &rg1, const std::vector<size_type> &rg2,
   bool slave1=true, bool slave2=false, int aug_version=1);
 
  inline size_type add_nodal_contact_between_nonmatching_meshes_brick
  (model &md, const mesh_im &mim1, const mesh_im &mim2,
   const std::string &varname_u1, const std::string &varname_u2,
   std::string &multname_n, std::string &multname_t,
   const std::string &dataname_r, const std::string &dataname_friction_coeff,
   size_type rg1, size_type rg2, bool slave1=true, bool slave2=false,
   int aug_version=1) {
 
    std::vector<size_type> vrg1(1,rg1);
    std::vector<size_type> vrg2(1,rg2);
    return add_nodal_contact_between_nonmatching_meshes_brick
      (md, mim1, mim2, varname_u1, varname_u2, multname_n, multname_t,
       dataname_r, dataname_friction_coeff,
       vrg1, vrg2, slave1, slave2, aug_version);
  }
 
  inline size_type add_nodal_contact_between_nonmatching_meshes_brick
  (model &md, const mesh_im &mim, const std::string &varname_u,
   std::string &multname_n, std::string &multname_t,
   const std::string &dataname_r, const std::string &dataname_friction_coeff,
   const std::vector<size_type> &rg1, const std::vector<size_type> &rg2,
   bool slave1=true, bool slave2=false, int aug_version=1) {
 
    return add_nodal_contact_between_nonmatching_meshes_brick
      (md, mim, mim, varname_u, varname_u, multname_n, multname_t,
       dataname_r, dataname_friction_coeff,
       rg1, rg2, slave1, slave2, aug_version);
  }
 
  inline size_type add_nodal_contact_between_nonmatching_meshes_brick
  (model &md, const mesh_im &mim, const std::string &varname_u,
   std::string &multname_n, std::string &multname_t,
   const std::string &dataname_r, const std::string &dataname_friction_coeff,
   size_type rg1, size_type rg2, bool slave1=true, bool slave2=false,
   int aug_version=1) {
 
    std::vector<size_type> vrg1(1,rg1);
    std::vector<size_type> vrg2(1,rg2);
    return add_nodal_contact_between_nonmatching_meshes_brick
      (md, mim, mim, varname_u, varname_u, multname_n, multname_t,
       dataname_r, dataname_friction_coeff,
       vrg1, vrg2, slave1, slave2, aug_version);
  }
 
 
  // DEPRECATED FUNCTION NAMES
 
  IS_DEPRECATED inline size_type add_basic_contact_with_friction_brick
    (model &md, const std::string &varname_u, const std::string &multname_n,
     const std::string &multname_t, const std::string &dataname_r,
     CONTACT_B_MATRIX &BN, CONTACT_B_MATRIX &BT,
     std::string dataname_friction_coeff,
     std::string dataname_gap="", std::string dataname_alpha="",
     int aug_version=1, bool Tresca_version=false, bool Hughes_stabilized=false)
  { return add_basic_contact_brick
      (md, varname_u, multname_n, multname_t, dataname_r, BN, BT, dataname_friction_coeff,
       dataname_gap, dataname_alpha, aug_version, Tresca_version, "", "", "", Hughes_stabilized); }
 
  IS_DEPRECATED inline size_type add_Hughes_stab_with_friction_contact_brick
    (model &md, const std::string &varname_u, const std::string &multname_n,
     const std::string &multname_t, const std::string &dataname_r,
     CONTACT_B_MATRIX &BN, CONTACT_B_MATRIX &BT, CONTACT_B_MATRIX &DN,CONTACT_B_MATRIX &DT,
     std::string dataname_friction_coeff, std::string dataname_gap="",
     std::string dataname_alpha="", int aug_version=1, bool Tresca_version=false)
  { return add_Hughes_stab_basic_contact_brick
      (md, varname_u, multname_n, multname_t, dataname_r, BN, BT, DN, DT,
       dataname_friction_coeff, dataname_gap, dataname_alpha, aug_version, Tresca_version, ""); }
 
  // rigid obstacle
  IS_DEPRECATED inline size_type add_contact_with_rigid_obstacle_brick
    (model &md, const mesh_im &mim, const std::string &varname_u,
     const std::string &multname_n, const std::string &dataname_r,
     size_type region, const std::string &obstacle, int aug_version=1)
  { return add_nodal_contact_with_rigid_obstacle_brick
      (md, mim, varname_u, multname_n, dataname_r, region, obstacle, aug_version); }
 
  IS_DEPRECATED inline size_type add_contact_with_friction_with_rigid_obstacle_brick
    (model &md, const mesh_im &mim, const std::string &varname_u,
     const std::string &multname_n, const std::string &multname_t,
     const std::string &dataname_r, const std::string &dataname_friction_coeff,
     size_type region, const std::string &obstacle, int aug_version=1)
  { return add_nodal_contact_with_rigid_obstacle_brick
      (md, mim, varname_u, multname_n, multname_t, dataname_r,
       dataname_friction_coeff, region, obstacle, aug_version); }
 
  // non-matching meshes
  IS_DEPRECATED inline size_type add_nonmatching_meshes_contact_brick
    (model &md, const mesh_im &mim1, const mesh_im &mim2,
     const std::string &varname_u1, const std::string &varname_u2,
     std::string &multname_n, const std::string &dataname_r,
     const std::vector<size_type> &rg1, const std::vector<size_type> &rg2,
     bool slave1=true, bool slave2=false, int aug_version=1)
  { return add_nodal_contact_between_nonmatching_meshes_brick
      (md, mim1, mim2, varname_u1, varname_u2, multname_n, dataname_r,
       rg1, rg2, slave1, slave2, aug_version); }
 
  IS_DEPRECATED inline size_type add_nonmatching_meshes_contact_brick
    (model &md, const mesh_im &mim1, const mesh_im &mim2,
     const std::string &varname_u1, const std::string &varname_u2,
     std::string &multname_n, const std::string &dataname_r,
     size_type rg1, size_type rg2, bool slave1=true, bool slave2=false,
     int aug_version=0)
  { return add_nodal_contact_between_nonmatching_meshes_brick
      (md, mim1, mim2, varname_u1, varname_u2, multname_n, dataname_r,
       rg1, rg2, slave1, slave2, aug_version); }
 
  IS_DEPRECATED inline size_type add_nonmatching_meshes_contact_brick
    (model &md, const mesh_im &mim, const std::string &varname_u,
     std::string &multname_n, const std::string &dataname_r,
     const std::vector<size_type> &rg1, const std::vector<size_type> &rg2,
     bool slave1=true, bool slave2=false, int aug_version=1)
  { return add_nodal_contact_between_nonmatching_meshes_brick
      (md, mim, varname_u, multname_n, dataname_r,
       rg1, rg2, slave1, slave2, aug_version); }
 
  IS_DEPRECATED inline size_type add_nonmatching_meshes_contact_brick
    (model &md, const mesh_im &mim, const std::string &varname_u,
     std::string &multname_n, const std::string &dataname_r,
     size_type rg1, size_type rg2, bool slave1=true, bool slave2=false,
     int aug_version=1)
  { return add_nodal_contact_between_nonmatching_meshes_brick
      (md, mim, varname_u, multname_n, dataname_r,
       rg1, rg2, slave1, slave2, aug_version); }
 
  // non-matching meshes with friction
  IS_DEPRECATED inline size_type add_nonmatching_meshes_contact_with_friction_brick
    (model &md, const mesh_im &mim1, const mesh_im &mim2,
     const std::string &varname_u1, const std::string &varname_u2,
     std::string &multname_n, std::string &multname_t,
     const std::string &dataname_r, const std::string &dataname_friction_coeff,
     const std::vector<size_type> &rg1, const std::vector<size_type> &rg2,
     bool slave1=true, bool slave2=false, int aug_version=1)
  { return add_nodal_contact_between_nonmatching_meshes_brick
      (md, mim1, mim2, varname_u1, varname_u2, multname_n, multname_t, dataname_r,
       dataname_friction_coeff, rg1, rg2, slave1, slave2, aug_version); }
 
  IS_DEPRECATED inline size_type add_nonmatching_meshes_contact_with_friction_brick
    (model &md, const mesh_im &mim1, const mesh_im &mim2,
     const std::string &varname_u1, const std::string &varname_u2,
     std::string &multname_n, std::string &multname_t,
     const std::string &dataname_r, const std::string &dataname_friction_coeff,
     size_type rg1, size_type rg2, bool slave1=true, bool slave2=false,
     int aug_version=1)
  { return add_nodal_contact_between_nonmatching_meshes_brick
      (md, mim1, mim2, varname_u1, varname_u2, multname_n, multname_t,
       dataname_r, dataname_friction_coeff, rg1, rg2, slave1, slave2, aug_version); }
 
  IS_DEPRECATED inline size_type add_nonmatching_meshes_contact_with_friction_brick
    (model &md, const mesh_im &mim, const std::string &varname_u,
     std::string &multname_n, std::string &multname_t,
     const std::string &dataname_r, const std::string &dataname_friction_coeff,
     const std::vector<size_type> &rg1, const std::vector<size_type> &rg2,
     bool slave1=true, bool slave2=false, int aug_version=1)
  { return add_nodal_contact_between_nonmatching_meshes_brick
      (md, mim, varname_u, multname_n, multname_t, dataname_r,
       dataname_friction_coeff, rg1, rg2, slave1, slave2, aug_version); }
 
  IS_DEPRECATED inline size_type add_nonmatching_meshes_contact_with_friction_brick
    (model &md, const mesh_im &mim, const std::string &varname_u,
     std::string &multname_n, std::string &multname_t,
     const std::string &dataname_r, const std::string &dataname_friction_coeff,
     size_type rg1, size_type rg2, bool slave1=true, bool slave2=false,
     int aug_version=1)
  { return add_nodal_contact_between_nonmatching_meshes_brick
      (md, mim, varname_u, multname_n, multname_t, dataname_r,
       dataname_friction_coeff, rg1, rg2, slave1, slave2, aug_version); }
 
}  /* end of namespace getfem.                                             */
 
 
#endif /* GETFEM_CONTACT_AND_FRICTION_NODAL_H__ */