TY - JOUR

T1 - The extended peridynamic model for elastoplastic and/or fracture problems

AU - Li, Wei Jian

AU - You, Tao

AU - Ni, Tao

AU - Zhu, Qizhi

AU - Hien Poh, Leong

N1 - Publisher Copyright: © 2022 John Wiley & Sons, Ltd.

PY - 2022/11/15

Y1 - 2022/11/15

N2 - The strain-based implementation method for the extended peridynamic model (XPDM) resolves the limitation of standard models where only a fixed Poisson's ratio can be achieved. In this contribution, the XPDM formulation is extended to include bond breakage and/or plasticity mechanisms. The elastoplastic and bond breakage algorithms are elaborated. To capture the fracture process, a shear mechanism is now incorporated to the bond breakage response, in addition to the standard stretching failure mode. It is shown that the shear mechanism is required to accurately reproduce mixed mode fracture behavior observed experimentally. To demonstrate the predictive ability of the strain-based XPDM, a wide range of quasi-static and dynamic loading conditions, for both brittle and elasto-plastic materials, is considered against experimental results or practical engineering scenarios.

AB - The strain-based implementation method for the extended peridynamic model (XPDM) resolves the limitation of standard models where only a fixed Poisson's ratio can be achieved. In this contribution, the XPDM formulation is extended to include bond breakage and/or plasticity mechanisms. The elastoplastic and bond breakage algorithms are elaborated. To capture the fracture process, a shear mechanism is now incorporated to the bond breakage response, in addition to the standard stretching failure mode. It is shown that the shear mechanism is required to accurately reproduce mixed mode fracture behavior observed experimentally. To demonstrate the predictive ability of the strain-based XPDM, a wide range of quasi-static and dynamic loading conditions, for both brittle and elasto-plastic materials, is considered against experimental results or practical engineering scenarios.

KW - crack propagation

KW - elasto-plastic fracture

KW - extended peridynamic model (XPDM)

KW - failure criteria

UR - http://www.scopus.com/inward/record.url?scp=85139378489&partnerID=8YFLogxK

U2 - 10.1002/nme.7060

DO - 10.1002/nme.7060

M3 - Article

AN - SCOPUS:85139378489

VL - 123.2022

SP - 5201

EP - 5229

JO - International journal for numerical methods in engineering

JF - International journal for numerical methods in engineering

SN - 0029-5981

IS - 21

ER -