Do the properties of "Natural Rubber" degrade quicker under cyclic stress conditions or will it be more environment dependant? The point in case is a car shock ansorber and "perishing" (aging/loss of elasticity) of the rubber.
How do I model a curved duct using beams? (Pro-Mech.
The duct consists of straight and bent sections of the same thickness. Given that a curved duct has less stiffness than a stright piece (for given dimensions) how would I go about including / calculating the reduction in stiffness?
