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doc:user:elements:contact:laws

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doc:user:elements:contact:laws [2014/11/05 18:06] wauteletdoc:user:elements:contact:laws [2015/01/26 12:13] joris
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 === Description === === Description ===
  
-Tresca's friction law. Friction do not depend on pressure. It is calculated using penalty method with sticking contact, and starts sliding once the tangential stress reaches a threshold entered by the user.+Tresca's friction law. Friction do not depend on pressure. It is computed using penalty method with sticking contact, and starts sliding once the tangential stress reaches a threshold entered by the user.
  
 :!: This law requires the use of ''AREAINCONTACT'' = ''AIC_ONCEPERSTEP'' :!: This law requires the use of ''AREAINCONTACT'' = ''AIC_ONCEPERSTEP''
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 | Penalty along tangential direction                   ''PEN_TANGENT''    |        ''TM''        | | Penalty along tangential direction                   ''PEN_TANGENT''    |        ''TM''        |
 | Depth at which contact is detected                    ''PROF_CONT''              -           | | Depth at which contact is detected                    ''PROF_CONT''              -           |
-Frictional shear factor |  ''TRESCA_M''          ''TM''        | +Static frictional shear factor |  ''TRESCA_STA_M''          ''TM''        | 
-Initial shear yield stress  |  ''TRESCA_K''          ''TM''        |+Dynamic frictional shear factor |  ''TRESCA_DYN_M''          ''TM''        | 
 +| Initial shear yield stress  |  ''TRESCA_K''          -        |
 | Type of contact                                    |    ''TYPE_CONT''              -           | | Type of contact                                    |    ''TYPE_CONT''              -           |
  
-The threshold is usually calculated using $m\,\sigma_0\,/\sqrt{3}$ where //m// is Tresca's coefficient of friction  and $\sigma_0$ is the tensile yield stress of the material.+The threshold is usually computed using $m\,\sigma_0\,/\sqrt{3}$ where //m// is Tresca's coefficient of friction  and $\sigma_0$ is the tensile yield stress of the material.
  
 ===== TmFrictionlessContactMaterial ===== ===== TmFrictionlessContactMaterial =====
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 | Penalty along tangential direction     ''PEN_TANGENT''    |        ''TM''        | | Penalty along tangential direction     ''PEN_TANGENT''    |        ''TM''        |
 | Depth at which contact is detected      ''PROF_CONT''              -           | | Depth at which contact is detected      ''PROF_CONT''              -           |
-Frictional shear factor |  ''TRESCA_M''          ''TM''        | +Static frictional shear factor |  ''TRESCA_STA_M''          ''TM''        | 
-Initial shear yield stress  |  ''TRESCA_K''          ''TM''        |+Dynamic frictional shear factor |  ''TRESCA_DYN_M''          ''TM''        | 
 +| Initial shear yield stress  |  ''TRESCA_K''          -        |
 | Nominal thermal resistance            ''CTM_H_NOMINAL''            -           | | Nominal thermal resistance            ''CTM_H_NOMINAL''            -           |
 | Exponent                              ''CTM_EXPONENT_E''  |          -           | | Exponent                              ''CTM_EXPONENT_E''  |          -           |
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 | Type of contact                      |    ''TYPE_CONT''              -           | | Type of contact                      |    ''TYPE_CONT''              -           |
  
-The threshold is usually calculated using $m\,\sigma_0\,/\sqrt{3}$ where //m// is Tresca's coefficient of friction  and $\sigma_0$ is the tensile yield stress of the material.+The threshold is usually computed using $m\,\sigma_0\,/\sqrt{3}$ where //m// is Tresca's coefficient of friction  and $\sigma_0$ is the tensile yield stress of the material.
  
 :!: Not tested in 3D :!: :!: Not tested in 3D :!:
  
doc/user/elements/contact/laws.txt · Last modified: 2016/03/30 15:23 by 127.0.0.1

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