VM155
VM155
Chaboche Rate-Dependent Plastic Material under Cyclic
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Overview
| Reference: | R.C. Lin, J. Betten, W. Brocks, "Modeling of finite strain viscoplasticity based on the logarithmic corotational description.” Archive of Applied Mechanics. Vol. 75, pp. 693-708, 2006 | |
| Analysis Type(s): |
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| Element Type(s): | 2D Structural Solid Elements (PLANE182) | |
| Input Listing: | vm155.dat |
Test Case
A thin plate is modeled with chaboche rate-dependent plastic material model. Uniaxial cyclic displacement loading is applied in vertical direction (Figure 217: Uniaxial Loading Problem Sketch). The loading history is composed of 23 cycles (Figure 218: Loading history), in which the first 22 cycles have an identical displacement path. In the last load cycle the displacement is made constant at time gaps 910 to 940 seconds and at time gaps 960 to 990 seconds. The stress history is computed and compared against the reference solution.
| Material Properties | Geometric Properties | Loading | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
E = 149,650 MPa µ = 0.33 Chaboche model:
Rate dependent model:
| H=1m | Cyclic uniaxial displacement load |
Analysis Assumptions and Modeling Notes
The problem is solved using 2D PLANE182 elements with plain stress element behavior. The chaboche rate-dependent plasticity is defined by TB, CHAB and TB, RATE, respectively. A static analysis is performed with uniaxial displacement loading. The element stresses along the X direction are computed in POST1.