Introduction to the material nonlinearity, namely metal plasticity. Effect of mesh quality on the quality of the numerical stress results. Solve problem with linear small displacement solution and identify a need for the nonlinear solution due to high stress. Define nonlinear study boundary conditions and loads. Define nonlinear material model with von Mises plasticity. Use simplified bi-linear plasticity material model. Review the stress and displacement results at various times. Study effect of mesh quality on the quality of the stress results. Use the mesh sectioning feature to review stress distribution within the bodies.
Introduction to the force control and displacement control methods in nonlinear module. Experience and resolve solution instabilities when solving nonlinear problems. Define nonlinear study boundary conditions and loads. Stabilize force control method to arrive to a final solution. Solve the problem using the displacement control method. Adjust boundary conditions for the displacement control method. Compare nonlinear results from the force control, and the displacement control methods.
Review the difference between small displacement linear, and large displacement nonlinear analyses. Introduce the concept of time curves, and discuss basic options. Solve small displacement linear analysis to demonstrate inaccurate solution. Define a nonlinear simulation study. Use time curves to control variation of the nonlinear loading. Use fixed increment stepping, and autostepping stepping procedures to solve the nonlinear problem. Postprocess results of the nonlinear simulation. Compare results from nonlinear studies with various setup parameters.