Automatic time incrementation and stability

The stability limit dictates the maximum time increment used by the Abaqus/Explicit solver. It is a critical factor in the performance of Abaqus/Explicit. The following sections describe the stability limit and discuss how Abaqus/Explicit determines this value. Issues surrounding the model design parameters that affect the stability limit are also addressed. These model parameters include the model mass, material, and mesh.


In this section:

Conditional stability of the explicit method
Definition of the stability limit
Fully automatic time incrementation versus fixed time incrementation in Abaqus/Explicit
Mass scaling to control time incrementation
Effect of material on stability limit
Effect of mesh on stability limit
Numerical instability