A coupled elastoplastic-damage constitutive model with Lode angle dependent failure criterion

Erice Echávarri, Borja and Gálvez Díaz-Rubio, Francisco (2014). A coupled elastoplastic-damage constitutive model with Lode angle dependent failure criterion. "International Journal of Solids and Structures", v. 51 (n. 1); pp. 93-110. ISSN 0020-7683. https://doi.org/10.1016/j.ijsolstr.2013.09.015.

Description

Title: A coupled elastoplastic-damage constitutive model with Lode angle dependent failure criterion
Author/s:
  • Erice Echávarri, Borja
  • Gálvez Díaz-Rubio, Francisco
Item Type: Article
Título de Revista/Publicación: International Journal of Solids and Structures
Date: January 2014
ISSN: 0020-7683
Volume: 51
Subjects:
Freetext Keywords: Weakening; Nickel-base superalloy; Finite element; High strain rate; Constitutive equations
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

A coupled elastoplastic-damage constitutive model with Lode angle dependent failure criterion for high strain and ballistic applications is presented. A Lode angle dependent function is added to the equivalent plastic strain to failure definition of the Johnson–Cook failure criterion. The weakening in the elastic law and in the Johnson–Cook-like constitutive relation implicitly introduces the Lode angle dependency in the elastoplastic behaviour. The material model is calibrated for precipitation hardened Inconel 718 nickel-base superalloy. The combination of a Lode angle dependent failure criterion with weakened constitutive equations is proven to predict fracture patterns of the mechanical tests performed and provide reliable results. Additionally, the mesh size dependency on the prediction of the fracture patterns was studied, showing that was crucial to predict such patterns

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainBIA2011-24445UnspecifiedUniversidad Politécnica de MadridSEGURIDAD E INTEGRIDAD DE MATERIALES METALICOS ESTRUCTURALES ANTE CARGAS EXCEPCIONALES

More information

Item ID: 35748
DC Identifier: http://oa.upm.es/35748/
OAI Identifier: oai:oa.upm.es:35748
DOI: 10.1016/j.ijsolstr.2013.09.015
Official URL: http://www.sciencedirect.com/science/article/pii/S0020768313003703
Deposited by: Memoria Investigacion
Deposited on: 26 Jun 2015 17:53
Last Modified: 05 Jun 2019 12:18
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