Elasto-plastic material modelling and validation using LS-DYNA

Elasto-plastic material modeling and validation using LS-DYNA

In this project, you will simulate a tensile test on a given dogbone specimen to validate the elasto-plastic material model in LS-DYNA. The experimental stress-strain curve is used to extract the data points and further cleaned to avoid noisy data. You will evaluate the hardening curve from the extracted stress-strain curve and learn how to give that as an input in LS-DYNA. Understand conversions from engineering stress-strain curve to true stress-strain curve and effective stress/effective plastic strain. 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. Post-processing would be carried out in LS-PrePost and simulated results would be compared to validate the material model.

• Evaluating all the input data from the experimental results
• Set up the tensile test case by defining boundary conditions and material properties
• Perform post-processing in Ls-PrePost and compare graphs in MATLAB/excel
• Compare the simulated results with the experiment and validate the material model