LS-DYNA Analysis for Structural Mechanics: Workshop IX Introduction to Contact

This is the ninth Workshop in our FEA training course: LS-DYNA Analysis for Structural Mechanics. This course is geared toward the engineering professional simulating highly nonlinear, transient dynamic problems involving large deformations and contact between multiple bodies.

A script of the Workshop is as follows:
Often times, the challenge to modeling contact is not setting up the contact model but checking the results. In this workshop, the goal is to verify the contact behavior and plot the contact force for each tube. The contact behavior should make good engineering sense. This workshop requires the student to do some independent homework by reading the Keyword Manual and at DYNAsupport.
Workshop Tasks
• Run model (Pipe on Pipe Contact Start.dyn) and look at contact behavior.
• Investigate logical contact behavior and change to Automatic and try using SOFT=2 (FINISH I)
• Measure contact forces between the parts (*CONTACT_FORCE_TRANSDUCER) and set ASCII file parameters RCFORCE & RWFORCE = 1e-6 (FINISH II)
• Plot rigid wall impact force (RWFORCE) via PADD on XY Plot Dialog
• Lastly, if one has time, setup model to show contact pressure (see Student Bonus Option).

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