Time integration accuracy in transient problems

Abaqus/Standard usually uses automatic time stepping schemes for the solution of transient problems. Factors influencing the increment size for transient problems include convergence aspects related to the degree of geometric, material, and contact nonlinearity (which also influence non-transient problems and are discussed in Convergence criteria for nonlinear problems) and the ability of the time integration operator to accurately resolve variations in the accelerations, velocities, and displacements over an increment. This section discusses tolerance parameters and adjustments to the time increment size related to the latter aspect.

The following topics are discussed:

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