*SetContact() - Poisson

Sets the values associated with a contact entity where the normal forces are described by the Poisson method.

Syntax

*SetContact(contact_name, 
                                   penalty, 
                                   rest_coeff, 
                                   use_aug_formulation, 
                                   [mu_static], 
                                   [mu_dynamic], 
                                   [stiction_trans_vel], 
                                   [friction_trans_vel])

Arguments

contact_name: The variable name of an existing contact entity.; Data type: varname
penalty: Determines the local stiffness properties between materials. Larger values lead to reduced penetration between two bodies.; Data type: real
rest_coeff: The value representing the energy loss between the two bodies in contact. A value of one represents no energy loss and a perfectly elastic contact.; Data type: real
use_aug_formulation: Used to refine the accuracy of the normal force between the two bodies.; Data type: boolean
mu_static: The coefficient of friction when the slip velocity is less than stiction_trans_vel.; Data type: real
mu_dynamic: The coefficient of friction when the slip velocity is greater than friction_trans_vel.; Data type: real
stiction_trans_vel: The value where the coefficient of friction becomes mu_static. When the slip velocity is between stiction_trans_vel and friction_trans_vel, the coefficient of friction is in transition between the two.; Data type: real
friction_trans_vel: The value where the coefficient of friction becomes mu_dynamic. When the slip velocity is between stiction_trans_vel and friction_trans_vel, the coefficient of friction is in transition between the two.; Data type: real

Example

*BeginMDL(the_model, "MBD Model")
 *Body(b_1, "Body 1", , , )
 *Body(b_2, "Body 2", , , )
 *Graphic(g_file_1, "File Graphic - 1", File, MODEL.b_1, "file1.h3d", comp1, GLOBAL, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 1.000, 1.000, 1.000)
 *Graphic(g_file_2, "File Graphic - 2", File, MODEL.b_2, "file2.h3d", comp1, GLOBAL, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 1.000, 1.000, 1.000)
 *Contact(contact_im, "Contact Impact", IMPACT, OFF, 1, g_file_1, FALSE, 1, g_file_2, FALSE)
 *SetContact(contact_im, 1E6, 2.0, 8.0, 0.1)
 *Contact(contact_ps, "Contact Poisson", POISSON, ON, 1, g_file_1, FALSE, 1, g_file_2, FALSE)
 
*SetContact(contact_ps, 1E5, 0.8, FALSE, 0.8, 0.6, 0.5, 1.5)
*EndMDL()

Context

*BeginMdl()

*DefineAnalysis()

*DefineSystem()