Nonlinear Static Analysis : Modelling Implications

Cases

The principle of superposition is not valid for nonlinear behaviour so unlike linear static analysis, results from different analyses must not be added together. An analysis case can be defined as the summation of factored load cases. This total loading is then analysed. Combination Cases formed from previously analysed Gss, nonlinear or GsRelax results will probably contain invalid results. Combination Cases should only be used for producing envelopes in these cases.