In this post, we are going to do a nonlinear buckling analysis for a thin arch shell under uniformly distributed pressure. The configuration of the arch shell is as follows During the analysis, a linear buckling analysis will be conducted first to obtain the 1st-order eigenvalue (i.e. the linear buckling load) and eigenmode (i.e. buckling … Continue reading Nonlinear buckling analysis: considering both large deformation and material nonlinearity
equilibrium path
Plastic limit analysis of a statically indeterminate beam
A structure can become unstable when a load reaches its buckling value or when nonlinear material becomes unstable. It is possible to observe the full response of a structure under proportional (ramped) loads using elastic-plastic analysis in ANSYS, so the plastic limit load and the location of plastic hinges can be determined. In this post, … Continue reading Plastic limit analysis of a statically indeterminate beam
Xutao Sun 