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A two parameter elasto-plastic formulation for hardening pressure-dependent materials

Carollo, Valerio and Paggi, Marco and Rossani, Alberto A two parameter elasto-plastic formulation for hardening pressure-dependent materials. Mechanics Research Communications, 77. pp. 1-4. ISSN 0093-6413 (2016)

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A new pressure-dependent yield function is proposed by introducing a plastic Poisson's ratio within the theoretical formulation of the plastic potential. In analogy with other classical models, an equivalent stress and an equivalent plastic strain increment are defined. Then, according to these definitions, the equivalent stress–strain curve is derived and an exponential hardening law is introduced. The advantage of the proposed formulation over alternative approaches relies in explicit closed-form expressions of the flow rules and of the plastic multiplier.

Item Type: Article
Identification Number: 10.1016/j.mechrescom.2016.07.009
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Research Area: Computer Science and Applications
Depositing User: Prof Marco Paggi
Date Deposited: 27 Dec 2016 09:12
Last Modified: 27 Dec 2016 09:12
URI: http://eprints.imtlucca.it/id/eprint/3615

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