General Archives - LSDYNA

General

Not a Number (NaN)

Velocities reported as NaN (Not a Number) indicate that the analysis has gone unstable for any number of reasons. Tracking the root…

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Mass scaling

Mass-scaling refers to a technique whereby nonphysical mass is added to a structure in order to achieve a larger explicit…

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Mass report in D3HSP file

Considering one single 4 noded shell element with mass equal to vol * density = 2*2*2*0.07 = 0.56. From this…

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Modell Check / Initialisation Run

With 971 R4.2.1 and following releases initialization does not require a license any more. It is possible to initialize your…

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LS-DYNA runs into Segmentation Violation (SIGSEGV) error. What can I do?

Content: Error message (Segmentation Violation) Checknan option (Segmenation Violation) Error message (MPI) . Error message (Segmentation Violation ) >>>>>  Process…

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Joint stiffness

A revolute joint will produce a resisting moment about its axis of revolution only if *CONSTRAINED_JOINT_STIFFNESS_ (GENERALIZED, FLEXION-TORSION) is defined in the input…

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Internal Energy

Internal energy is computed in LS-DYNA based on the six components of stress and strain (tensorial values). The calculation is…

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Install a New Network License (Microsoft Windows)

Important Note: Due to export regulations when using a virtual machine (VM) as license server, the server ID also does…

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Install a New Network License (Linux/Unix/Solaris)

Important Note: Due to export regulations when using a virtual machine (VM) as license server, the server ID also does…

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I have very long run times. What can I do?

When you’re using explicit time integration, there is no magic cure for long run times associated with simulating very small…

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