Metal forming Archives - Page 4 of 10 - LSDYNA

Metal forming

I have no experience in springback prediction, and have no idea whether my prediction is reasonable. Do you have any idea how accurate the solution could be from LSDYNA?

Even though the accuracy varies with different forming condition, it has been found that LSDYNA3D can be used to predict…

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How do you trim the blank after a forming analysis?

Usually the blank can be trimmed after forming simulation with an intermediate file – “dynain”. The following is a list…

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How do you trim the blank after a forming analysis?

Usually the blank can be trimmed after forming simulation with an intermediate file – “dynain”. The following is a list…

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How do you use RIGID_BODY_STOPPER?

Use the card of *CONSTRAINED_RIGID_BODY_STOPPERS You can constrain the displacement by specifying a negative value for LCMAX and LCMIN. You…

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How is the FLD obtained in LSPOST? What is the limitation of using this FLD?

The FLD in LSPOST is based on an experience data; it is only good for one specific material under linear…

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How many levels of adaptive mesh do I need in my calculation?

It depends on the initial mesh and the curvature of the tools. Usually it is necessary to have at least…

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How to do hydro forming analysis?

There are two ways to apply pressure, i.e. a) using *LOAD_MASK b) using *LOAD_SEGMENT or LOAD_SEGMENT_SET Note: a) Only positive…

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How to use non-smooth trimming?

Non-smooth trimming is a recent feature in LSDYNA, it is easily realized by using a negative value for the parameter…

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I found that the number of adapted elements was too large when I performed a multi-stage forming analysis using adaptivity. Is there a way to avoid this problem?

You need to specify a minimum element size to prevent too fine a mesh from being generated when using adaptive…

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How can you add constraints for a springback analysis?

In springback analysis, the deformed part must be constrained properly. In an under-constrained model it will be difficult to obtain…

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