Learning Forum

[seijieng]

In Rocky 2025 R1 for the Leeds Contact module, the equation in the module manual doesn't match the source code downloaded from the modules add-on. In the code, s_dot rather than sqrt(s_dot) is used.

 

Equation 16-7 

F = 2*eta*sqrt(m*K*s_dot)

 

double damping_coefficient = leeds_material_interaction.damping_ratio * 2.0 * sqrt(equivalent_mass * elastic_stiffness);
damping_force = damping_coefficient * (overlap - previous_overlap) / contact.get_timestep();

[Lucas Bertollo Baggio]

Hello,

 

there is a typo in the documentation. It will be corrected, thanks. The equation 16-7 should be as it is in the source code.