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In springback analysis I don't have enough memory or the analysis takes too much time. What can I do ?

In springback analysis I’ve found I have two problems: 1) When I use the implicit method I don’t have enough memory and can’t continue the calculation; and 2) At other times springback analysis takes too much time. Are there any methods available to solve these problem?

Yes, it is possible to reduce the memory requirement and increase the computation speed in springback analysis.

Mesh coarsening, a new feature in LS-DYNA 960, can be used to reduce the memory requirement and increase the computation speed for springback analysis. Many unnecessary fine elements can be merged into bigger elements with this feature. A fine mesh is necessary for a good forming simulation and very important for setting the stage (i.e. accurate stress) for good springback analysis. It is often not crucial to have the fine mesh everywhere during unloading (springback analysis). It has been proven (based on many tests) that the coarsening algorithm used by LS-DYNA can be safely used for most production jobs.

After most of the unnecessary elements are removed from the model, we can do the springback analysis for nearly all the production jobs.
You can also choose to perform an out of core solution if there is insufficient memory available on the computer which is being used