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Constitutive law of finite deformation elastoplasticity with proportional loadings

Darijani, H ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1115/1.4024581
  3. Publisher: 2013
  4. Abstract:
  5. In this paper, decomposition of the total strain into elastic and plastic parts is investigated for extension of elastic-type constitutive models to finite deformation elastoplasticity. In order to model the elastic behavior, a Hookean-type constitutive equation based on the logarithmic strain is considered. Based on this constitutive equation and assuming the deformation theory of Hencky as well as the yield criteria of von Mises, the elastic-plastic behavior of materials at finite deformation is modeled in the case of the proportional loading. Moreover, this elastoplastic model is applied in order to determine the stress distribution in thick-walled cylindrical pressure vessels at finite deformation elastoplasticity
  6. Keywords:
  7. Finite deformation ; Cylindrical pressure vessels ; Deformation theory ; Elastic-plastic behavior ; Elasto-plastic models ; Finite deformations ; Logarithmic strain ; Proportional loading ; Thick-walled vessels ; Constitutive equations ; Elasticity ; Elastoplasticity ; Plastic parts ; Plasticity ; Stress concentration ; Loading
  8. Source: Journal of Pressure Vessel Technology, Transactions of the ASME ; Volume 135, Issue 6 , September , 2013 ; 00949930 (ISSN)
  9. URL: http://pressurevesseltech.asmedigitalcollection.asme.org/article.aspx?articleid=1740750