John Lin, ANSYS, states, "for pretension problems, use a contact stiffness factor greater than one, because penetration can strongly influence the pretension forces .
Nonlinear contact pairs should use deflault or manual contact stiffness settings so that contact stiffness factors are 1.
Nonlinear Dynamic Finite Element Model Algorithm and the Optimization of Contact Stiffness Factor Based on Experiment
Based on Hertz contact theory, the contact stiffness factor is usually set from 0.
The peak accelerations and the convergence of various operating conditions are obtained by different stiffness factor values.
In principle, the appropriate contact stiffness factor is easy to converge.
It is presented that the contact stiffness factor 0.
A] wheel by China Academy of Railway Sciences, the contact stiffness factor is optimized, defined as 0.
Caption: Figure 6: Acceleration simulated with different stiffness factor in different conditions.
This process of contour extraction, surface formation, matching, and stretching is repeated a number of times, with stiffness factors
decreased during each iteration to duplicate what actually occurs in the body.