Metal forming Archives - Page 7 of 10 - LSDYNA

Metal forming

Use the card of *CONSTRAINED_RIGID_BODY_STOPPERSYou can constrain the displacement by specifying a negative value for LCMAX and LCMIN.How is seamless springback analysis done with LSDYNA?

In the input deck, simply include a *INTERFACE_SPRINGBACK_SEAMLESS control card. Make sure to add proper constrains to remove rigid body…

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What are the differences between smooth and non-smooth trimming?

There are two methods in trimming, i.e. smooth and non-smooth trimming. In smooth trimming, the boundary element will be cut…

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What can I do if the direction of the pressure is not reasonable after the mesh had been refined adaptively?

When I used adaptive mesh in hydro forming simulation, there was no problem in the initial stage. However, I found…

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What can I do if the mesh for the last state was not written to the d3plot after restarting from d3dumpxx?

I performed springback analysis using the seamless method, but no converged solution was obtained. Then I wrote a small input…

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What is FLD?

FLD stands for Forming Limit Diagram, and it is a criterion, which is commonly used to evaluate the sheet metal…

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What is the material formability?

The material formability is an evaluation of how much deformation a material can undergo before failure. Two factors need to…

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What is the proper punch speed that could be used in stamping simulation?

The punch speed should be chosen to make sure that the dynamic effect of the deformable body is within a…

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What is the proper strategy to switch from implicit and explicit method or from explicit to implicit method?

The user may choose to use one of the two approaches, a) the implicit based solution and switches to explicit…

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What is the use of defining a box for drawbead?

If a draw bead box is defined, only the elements inside the box will be considered in the contact search….

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What is the use of RIGID-BODY_STOPPER?

When both force and displacement are applied to a rigid body, it is necessary to use this card. If the…

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