Constitutive parameter sensitivity in elasto-plasticity (Q1910934)
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scientific article; zbMATH DE number 859414
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Constitutive parameter sensitivity in elasto-plasticity |
scientific article; zbMATH DE number 859414 |
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Constitutive parameter sensitivity in elasto-plasticity (English)
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18 July 1996
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The paper presents equations and algorithms for numerical computation of elasto-plastic and elasto-viscoplastic constitutive parameter sensitivity problems. The general integration idea is based on the return-mapping algorithm. Two viscoplastic constitutive models are discussed in details: the overstress (Perzyna) model and the power law strain and strain-rate hardening model. The use the consistent tangent operator is shown to be essential for the accuracy of the sensitivity analysis.
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yield limit point
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numerical integration
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return-mapping algorithm
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overstress model
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power law strain and strain-rate hardening model
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tangent operator
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