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Elasto-plastic material modelling and validation using LS-DYNA

In this project, you will learn how to validate the elasto-plastic material model with the given stress-strain data. You will learn the extraction and cleaning of the stress-strain data point from the given curve. Then you will study how to evaluate the hardening curve and give material parameters input to the LS-DYNA software. Finally, you will understand how to extract the stress-strain results from the simulation and compare it with the given data.

  • Mechanical/Automotive/Material science/Metal forming

duration
Duration :

1 month

projectfees
Project Fees :

INR 30,000

Benefits of this Project

In this project, you will learn how to validate the elasto-plastic material model with the given stress-strain data. You will learn the extraction and cleaning of the stress-strain data point from the given curve. Then you will study how to evaluate the hardening curve and give material parameters input to the LS-DYNA software. Finally, you will understand how to extract the stress-strain results from the simulation and compare it with the given data.

What will you do in this project?

Step 1 - Evaluate hardening curve from the given stress-strain curve

Step 2 - Apply boundary conditions and run the simulation

Step 3 - Post-processing in LS-PrePost

Step 4 - Comparing results and material model validation

You will be performing a tensile test on a dogbone specimen to validate the elasto-plastic material model.

  •  Extract and clean the stress-strain data from the given experimental curve.
  •  Evaluate the hardening curve from the extracted stress-strain data.
  •  Set-up the tensile test case study by applying required boundary conditions in LS-PrePost.
  •  Extract and analyse the stress-strain results in the post-processing phase
  •  Compare and validate the stress-strain curve

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Project Highlights

The project is an advanced level project

Pre-requisites

Work with Multiple Tools

showcase

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.

 

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