I am using Abaqus to simulate the damping response of a constrained layer damper made of rubber, which is a hyperelastic and viscoelastic material. The structure is a hollow cylindrical cantilever, and I am measuring damping by applying a static load to the free end of the structure and then deactivating the load for the implicit step. The Ogden model with instantaneous hyperelasticity was used to define the hyperelastic properties, and shear-relaxation test data was used to define the time-domain viscoelasticity. However, every time I run the simulation I get a non-damped response.
Is there another way to measure the damping of the material using Abaqus, or is it hard to achieve damping on such a structure? I would appreciate any input regarding this.