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Latest articles
Frequency Domain and Fatigue Analysis in LS-DYNA
Dr. Yun Huang and prepared an excellent package to get started in Frequency Domain and Fatigue Analysis in LS-DYNA. You can download the package by copying …
Cohesive Element Timestep
Cohesive material models are well suited for representing the behavior of structural and non-structural adhesives that is now increasingly used. To …
Parameter DIR in DEFINE_COORDINATE_SYSTEM
In earlier versions of LS-DYNA, the axis N1-N2 was always set as the local-x but in new versions (since LS-DYNA v971), the N1-N2 vector can be configured …
Recommended settings for Spotwelds
When using spotwelds, there are several non-default parameters that are recommended to improve the spotweld behavior and model robustness. Following are …
Total Mass, Physical Mass and Added Mass
LS-DYNA reports three types of mass information for the model. The total mass and the physical mass is the same which is the mass of the model before any …
Air particles and relaxation when using Particle based airbag inflation
When using particle based airbag inflation method using *AIRBAG_PARTICLE, the initial air in the airbag can be modeled using control-volume approach or as …
MPP LS-DYNA Intermittent Profiling Information
During MPP LS-DYNA execution, often there is a need to know how each of the “threads” are doing in terms of overal CPU utilization. Until now, one has to …
TSRFAC – Gradual introduction of strains in Airbags with Reference Geometry
In Airbags with reference geometry (*AIRBAG_REFERENCE_GEOMETRY), when the airbag bag element in folded state is smaller or larger than the reference state, …
Hugely Successful LS-DYNA Conference 2012
Recently held 12th LS-DYNA Conference, June 4-5 2012, was a huge success with over 680 attendees from over 21 different countries. It was great to see …
Past, Present and Future of Writing
My son’s, who is in 3rd grade, rendition of how we may be writing in the future …..
Visualization of Triaxiality Factor in LS-PrePost
Stress Triaxiality is the ratio of Hydrostatic stress and the von-Mises stress and is known to have a great influence on the plastic deformation. You can …
LS-DYNA Advanced Class in Detroit
Its been a while since my last post. I wanted to take the time to share that I will be teaching an LS-DYNA Class in Detroit, Michigan. You can visit …