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RSIME Finite Element Modeling: LS-DYNA

LS-DYNA is an extremly powerful non-linear, explicit finite element modeling program, utilized by RSI Materials Engineering.  Capable of modeling complicated "real-world" problems that other FEA programs have difficulty with.  Most notably, is the ability to handle non-linear problems, such as material plastic deformation.  Listed below are a few examples of which LS-DYNA can be applied.

  • Crashworthness of Vehicles
    • Automobiles
    • Locomotives / Railcars
  • High Velocity Impacts
  • Material Plastic Deformation
  • Sheet Metal Forming with Springback
  • Drop Testing
  • Airbag Inflation and Impact
  • Human Body Dynamics from Impact
  • Solid / Fluid Interactions
  • Explosions and Resulting Damage

Past LS-DYNA Projects
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Hertzian Contact Stress Analysis

Hertzian contact stresses are detremental to the life of a bearing.  To better understand these stresses and loads on individual rollers, a LS-DYNA model was created and analyzed of a railcar tapered roller bearing.  More...

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Railcar Wheel Impact Analysis

Wheel flats are common wheel defects in the rail industry.  LS-DYNA was implimented to model a single wheel with a wheel flat travel over track.  Resulting deformation and accelerations were measured and compared to physical test data.  More...

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Grease Seal Stamping Model

A bearing grease seal is made of thin sheet steel stamped into its shape.  This process was modeled using LS-DYNA. More...

 

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