1shan
Ansys Employee
HelloArray,nAt the interface you would have multiple COMBINE39 contact elements right? The shear stress would be the force in one spring element divided by the area between these adjacent spring elements, so the 'l' should be the distance between one pair of these multiple adjacent elements. I am not 100% sure since I havent read the article you referred but this looks logical. You could refer the help documentation for additional details about the nonlinear spring element.13.39. COMBIN39 - Nonlinear Spring (ansys.com)nRegards,Ishan. nhttps://forum.ansys.com/discussion/3978/how-to-access-the-ansys-online-helpn