A material-specific relation tying stress to strain (and possibly strain rate, history, temperature). Closes the balance laws to yield well-posed BVPs. Examples: Hookean elasticity, Newtonian viscosity, Bingham plasticity.
A material-specific relation tying stress to strain (and possibly strain rate, history, temperature). Closes the balance laws to yield well-posed BVPs. Examples: Hookean elasticity, Newtonian viscosity, Bingham plasticity.