Example40 Deformation of Elasto-Plastic Multilinear Material

General

A plate inlaid with elasto-plastic multilinear material is deformed by forced displacement.
The deformation, the displacement and the mechanical stress are solved.
Unless specified in the list below, the default conditions will be applied.

Analysis Space

Item	Settings
Analysis Space	Axisymmetric
Model unit	m

Analysis Conditions

Item	Settings
Solvers	Mechanical Stress Analysis [Galileo]
Analysis Type	Static analysis

The nonlinear analysis is set up on the Step/Thermal Load tab as follows.

Tab	Setting Item	Settings
Step/Thermal Load	Step/Reached Temperature Setting	Substeps of Step 1 : 10
Step/Thermal Load	Options for the Nonlinear Analysis	Save the results of substeps : Select

The default number of substeps is 20. It is adjusted to 10 in this exercise. Therefore the forced displacement applied on the top face is divided to 10 substeps and each substep is solved in order of precedence.

“Save results of substeps” is selected by default to see the results at all 10 steps.

Model

This model is axisymmetric. The axis of symmetry is Z-axis. The 3D body is actually a circular rod.

The body is made of the elasto-plastic multilinear material named “ML” and a forced displacement is applied on the top face of the body.

Body Attributes and Materials

Body Number/Type	Body Attribute Name	Material Name
2/Sheet Body	BA1	ML

The material properties are set up as follows:

Material Name

Tab

Properties

Elasticity

Material Type: Elasto-plastic/Multilinear

Young’s modulus: 69×10^9[Pa]

Poisson’s ratio: 0.3

The plastic strain – stress multilinear curve of ML is shown bellow. This characteristic has been set on the “plastic strain – stress multilinear” table in the dialog box which appears when the button located in the “plastic strain – stress multilinear” area is clicked.