What is Hertz Stiffness? How is it calculated?
Hertz Stiffness provides an approximate value for the Penalty Stiffness value. Kh = l*E where, Kh –> Hertz Stiffness l –> Size/edge length of the element at the contact surface E –> Youngs Mod of Contact Surface For 2D models, the thickness of element is considered for l Return to Top 39. Simulating contacts between 2 Rubber material bodies. How can I evaluate E for the rubber so that I can roughly estimate the contact Stiffness? Consider E for the rubber material portion as: E = 6(a+b) where a and b are the first two Mooney-Rivlin contants Return to Top 40. While using NTN contact elements between two (3D) surfaces, is there any recommended practice for meshing at those two surfaces? Meshing between the two sides were varying along X. Surface 1 – – – – – – – – — — — — — — — Y $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ | – – – – – – – – — — — — — — — |___ X finer coarser Surface 2 $ sign indicates the Node-To-Node Contact Element between the Nodes of Surface 1 and 2 r
