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Latest articles
Automatic Tiebreak – Some Quick Notes
I posted a detailed document on the TIEBREAK contacts. Here are a few things that I noticed after the I wrote the article. 1. Scale down the penalty …
More on LSCASEDRIVER
In an earlier post, we saw how *CASE keywords can help us perform sequential and sequential+dependent simulations. But here I want to talk a little more …
Sense-Switch Controls for Interacting with Running LS-DYNA Jobs
There are several sense switch controls that are available to interactively request LS-DYNA respond to certain pre-defined calls. The well documented …
Encryption Comes to LS-DYNA v971 !
Encryption has been around for several years but it finally comes to LS-DYNA in the form of GPG encryption which can be used at no additional cost to …
Interactively Terminating LS-DYNA Jobs
There are several methods available to interactively termination an running LS-DYNA job. They are briefly discussed here. 1. Sense Switch ‘SW1’ This …
Features Every LS-DYNA Simulation Must Have
LS-DYNA is a general-purpose simulation software. This is a good thing for analysts since it provides tremendous flexibility in simulating a wide range of …
Energy Output to D3PLOT Files
Several options exist in LS-DYNA to output the energies, stress and strain information for shells, solids and beams depending on the choice of parameters …
Determining Prony Series Constants for Modeling Creep and Relaxation
Came across this excellent tutorial that talks in detail the steps involved in determining the Prony series constants. Determining a Prony Series for a …
Nodal Time History in Local Coordinate System
In several simulations, the response of a nodal point (displacement, velocity, and acceleration) is helpful to be output in a user-defined local coordinate …
Accelerometer Mass
Starting 971, LS-DYNA allows the direct input of the physical accelerometer mass in the *ELEMENT_SEATBELT_ACCELEROMETER keyword which is lumped equally to …
A Simple ALE Sloshing Example
Sloshing problems can be simulated using several techniques in LS-DYNA that range from using a simple MAT_ELASTIC_FLUID modeling to a complex ALE or SPH …
Tiebreak Contact in LS-DYNA
Tiebreak contacts in LS-DYNA have undergone significant enhancements in recent versions. A brief overview is provided in the PDF document below. Special …