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Hi vesna I think zero length element has the same effect with the truss element if we put the length and cross sectional area of the truss element as 1.0. And the capacity of viscous material is proportional to the area or length of the truss element. Anyway, I found the way to define the fluid visc...

Anybody checked that the command of "uniaxialMaterial Maxwell" is really working?
I think it is not working at all...

vesna wrote: > You are right about the material, but after you assign it to an element > with a specific length and cross-sectional area you will add some stiffness > to your system. Dear Vesna This makes me somewhat confused... then what should be the cross-sectional area of element if I want to de...

As I know, pure viscous material has no stiffness. Therefore, it should not change as the changing of the length and area of element. Stress-strain relationship of pure viscous material can be defined by the viscous coefficient and the rate of strain to time. Please tell me if I am making any mistak...

Hello I am trying to model fluid viscous damper using "truss element" and "viscous material'. I found that the crosssectional area of truss element makes effect on the capacity of viscous damper. I think the capacity of fluid viscous dampers should be determined by only the damping co...