at first i want to introduce myself. My name is Christian. I work as a research assistent and Phd student on the University of Technology Freiberg, Germany. My research topic is about rubber bushings in passenger cars.
I going to simulate their behavior in a precise way. Some papers und my own experimental results tells me a very complicated behavior during multiaxial loadings. These rubber mount can be imagined as simple cylinders. Combined loadings (e. g. an axial displacement with a simultaneously twist around the same axis) leads to nonlinear relationships. The torsional moment decreases with increasing axial displacment until a special point and furthermore increases with increasing axial displacement. Commercial avaiable constitutive models does not fit this very special bahavior very well.
Does anyone know a constitutive model which can overcome this drawback?
Thank you very much!
Kind regards, Christian