Understand how to perform a tensile test to calculate the Mooney Rivlin and Ogden material parameters and compare it with the given stress-strain data. Learn how to use hyper-elastic material card and give particular inputs for simulation. Study and understand conversions from engineering stress-strain to true stress-strain and terms like stretch ratio and extension. Finally, understand curve fitting and compare the simulation and given stress-strain data.
Step 1 - Applying boundary conditions to the given geometry
Step 2 - Curve fitting for different hyper-elastic material constants
Step 3 - Post-processing in LS-PrePost
Step 4 - Validation of hyper-elastic material model
You will be performing a tensile test on a dogbone specimen to validate the hyper-elastic material model. You will do the following in this project,
In this project, you will simulate a tensile test on a given dogbone specimen to validate the hyper-elastic material model in LS-DYNA. The experimental stress-strain data is given and is used as an input which defines the uniaxial stress-strain behaviour. understand how to give all boundary conditions for a tensile test and set up an error-free input file for the solver. Finally, run the simulation using this input file using the launch manager. Understand conversions from engineering stress-strain curve to true stress-strain curve and terms like stretch/extension. Post-processing would be carried out in LS-PrePost and simulated results would be compared to validate the material model.
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