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Pro/ENGINEER Wildfire 5.0 Advanced Mechanica lets you define materials capable of handling plastic deformation.

Plasticity describes the deformation of a material undergoing non-reversible changes of shape in response to applied forces. For example, a solid piece of metal or plastic being bent or pounded into a new shape displays plasticity as permanent changes occur within the material itself (Ref Figure. 1).

Inside the new materials properties UI you can choose any type of material considering the Stress-Strain response (Linear, Hiperelastic or Elastoplastic) (Ref Figure. 2).

With any part affected by a plasticity deformation open, go to Application> Mechanica, then Click on the material definition and select new .

You can now create your own material with the mechanical behavior of plasticity defining a graphic test of Plastic Strain vs. Stress or by defining the coefficients of Linear Hardening, Power Law, Exponential Law and a Perfect Plasticity (Ref Figure. 3).

For this example we will define the material by Graphic Tests as shown above, and we select Automatic in the Select Hardering Law dialog box and we will mark the check box for Use Best Fit Coefficients in order to get a better interpolation of the behavior of the graphic.

After you have your material ready, assign the material to the part using.

Next step, you must define the boundary constrains applying the adequate sets of constrains and loads affected by the part.

Now go to Analysis > Mechanical Analyses/Studies… >File> New Static… and make sure your loads and constrains are selected. Give a name and description to your analysis and then mark the check box of Nonlinear and activate the check box of Include Plasticity. You will have a setup similar to the image below:

You will require a minimum of 1 interval to run this analysis. Define the Convergence Method to Single-Pass Adaptive, and make sure you calculate the Stresses, Reactions and Rotations in the Output tab and then click OK (Ref Figure. 4).

Finally, you can run the Analysis by clicking the green flag or Start Run, and click OK.

To Review your results click on inside the Analyses and Design Studies afteryour analysis is completed and select the results you need to validate (Ref Figure. 5).