An elastoplastic constitutive damage model based on peridynamics formulation

被引:4
作者
Cruz, Atila Lupim [1 ]
Donadon, Mauricio Vicente [2 ]
机构
[1] Inst Aeronaut & Space, Mech Div, BR-12228904 Sao Jose Dos Campos, Brazil
[2] Technol Inst Aeronaut, Dept Aeronaut Engn, BR-12228900 Sao Jose Dos Campos, Brazil
关键词
Peridynamic; Stress analysis; Damage and fracture analysis; Smeared cracking model; FRACTURE; CRITERIA; PLATES;
D O I
10.1016/j.ijnonlinmec.2022.103978
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
Peridynamic Theory based models allow simulating the initiation and growth of cracks in solid materials, without the aid of additional methods commonly employed in the conventional finite element formulation. Within this context, a new elastoplastic damage model is proposed to use with the Peridynamic Theory. This proposed damage model combines Von Mises plasticity-based theory with a smeared cracking approach enabling damage prediction within an energy-based framework. The formulation incorporates a mixed-mode propagation criterion to account for the effect of both axial and shear stresses in the simulation, which in turn allows prediction of damage progression in ductile materials under multiaxial loading without knowing a priori the mode mixity ratio. This proposed damage modeling approach can be used within any constitutive peridynamic model, by relying on the displacement field obtained in the simulation.
引用
收藏
页数:13
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