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ST7-1.20.10.2 Nonlinear Analysis Basics
This Webnote presents a simple overview of some of the basic concepts of nonlinear analysis: iteration, load increments, convergence and residual forces. Most nonlinear problems are solved by an iterative numerical procedure, which needs to converge before results can be interpreted or assessed. For problems with significant nonlinearity, the load is usually applied progressively instead of all at once. Alternatively, the automatic load stepping option can be used (set in the Solver Defaults)....
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