References  

This example demonstrates the simulation of follower loading applied to frame elements.

References Popov, E. “Engineering Mechanics of Solids”, Prentice Hall, 1990. Linear: Example 2.14 NonLinear: Example 2.23

checking eigen results of smallest and largest values

Test of J2 plasticity using a mixed brick element.

http://130.149.89.49:2080/v2016/books/exa/default.htm?startat=ch01s01.html

This example demonstrates how to construct and test the ASDConcrete3D material model under cyclic uniaxial compression. The simulation captures strain localization and damage evolution using an automatically regularized fracture energy.

References Simo, J. C., and F. Armero, “Geometrically Nonlinear Enhanced Strain Mixed Methods and the Method of Incompatible Modes,” International Journal for Numerical Methods in Engineering, vol. 33, pp. 1413–1449, 1992. Brink, U., and E. Stein, “On some Mixed Finite Element Methods for Incompressible and Nearly Incompressible Finite Elasticity,” Computational Mechanics, vol. 19, pp. 105–119, 1996. ...

This example simulates a conventional triaxial compression test using the Drucker–Prager model in a single 8-node brick element. Stress and strain response are recorded at the Gauss point.