6.2.1 Static stress analysis procedures: overview

A static stress procedure is one in which inertia effects are neglected. Several static stress analysis procedures are available in ABAQUS/Standard:

Static analysisStatic stress analysis, Section 6.2.2, is used for stable problems and can include linear or nonlinear response.

Eigenvalue buckling analysisEigenvalue buckling prediction, Section 6.2.3, is used to estimate the critical (bifurcation) load of “stiff” structures. It is a linear perturbation procedure.

Unstable collapse and postbuckling analysisUnstable collapse and postbuckling analysis, Section 6.2.4, is used to estimate the unstable, geometrically nonlinear collapse of a structure. The method can also be helpful in obtaining a solution in other types of unstable problems, and it is often suitable for limit load analyses.

Quasi-static analysisQuasi-static analysis, Section 6.2.5, is used to analyze transient response to time-dependent material behavior (creep and swelling, viscoelasticity, and viscoplasticity). A quasi-static analysis can be linear or nonlinear.

Direct cyclic analysisDirect cyclic analysis, Section 6.2.6, is used to calculate the stabilized cyclic response of the structure directly. It uses a combination of Fourier series and time integration of the nonlinear material behavior to obtain the stabilized cyclic solution iteratively.