Non-linear Analysis

Select Strucure Analysis > Non-linear Analysis in the Job preferences dialog tree to access the following analysis parameters.

Define relative code tolerances for both residual forces and displacements.

Elasto-plastic Analysis

Select the Automatic option to use the element length defined on the Structure Model tab (Analysis > Analysis Type).

Select User-defined to enter the calculation element division number in the N = field. These are along the bar element length and assigned a section of elasto-plastic properties.

Click the Parameters of incremental method button to define the following:

• Number of load increments (per iteration).
• The Maximum number of iterations for one increment (loads).
• Number of increment length reductions (solution convergence rectification).
• Increment length reduction coefficient (load increment modifications).
• Maximum number of "line searches" trials.
• Control parameter for "line search" method,
• Maximum number of BFGS connections.
• Post iteration tasks
  • Enable the stiffness matrix to update after each load sub-increment in an iteration,
  • Enable the stiffness matrix to update after each iteration,
  • Save results after each iteration.

See also:

Non-linear analysis parameters