A phase-field study of crack propagation and branching in functionally graded materials using explicit dynamics

2020 ◽  
Vol 109 ◽  
pp. 102681
Author(s):  
Moirangthem Dinachandra ◽  
Alankar Alankar
Keyword(s):  
Crack Propagation ◽  
Field Study ◽  
Functionally Graded Materials ◽  
Phase Field ◽  
Functionally Graded ◽  
Graded Materials ◽  
Explicit Dynamics

scholarly journals Phase field modelling of crack propagation in functionally graded materials

2019 ◽  
Vol 169 ◽  
pp. 239-248 ◽  
Author(s):  
Hirshikesh ◽  
Sundararajan Natarajan ◽  
Ratna K. Annabattula ◽  
Emilio Martínez-Pañeda
Keyword(s):  
Crack Propagation ◽  
Functionally Graded Materials ◽  
Phase Field ◽  
Functionally Graded ◽  
Graded Materials ◽  
Field Modelling

A non-intrusive stochastic phase field method for crack propagation in functionally graded materials

2021 ◽  
Author(s):  
Shaima M. Dsouza ◽  
Hirshikesh ◽  
Tittu V. Mathew ◽  
Indra Vir Singh ◽  
Sundararajan Natarajan
Keyword(s):  
Crack Propagation ◽  
Functionally Graded Materials ◽  
Phase Field ◽  
Field Method ◽  
Functionally Graded ◽  
Phase Field Method ◽  
Graded Materials

scholarly journals Study on Thermally Induced Crack Propagation Behavior of Functionally Graded Materials Using a Modified Peridynamic Model

2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Fei Wang ◽  
Yu’e Ma ◽  
Yanning Guo ◽  
Wei Huang
Keyword(s):  
Fracture Toughness ◽  
Crack Propagation ◽  
Functionally Graded Materials ◽  
Initial Temperature ◽  
Functionally Graded ◽  
Thermal Crack ◽  
Graded Materials ◽  
Ceramic Fracture ◽  
Thermally Induced ◽  
Peridynamic Model

Peridynamic (PD) theory is used to study the thermally induced cracking behavior of functionally graded materials (FGMs). A modified thermomechanical peridynamic model is developed. The thermal crack propagation of a ceramic slab in quenching is calculated to validate the modified PD model. The results predicted by the modified PD model agree with previously published numerical and experimental ones. Compared with the original PD model, the calculation accuracy of the modified PD model for thermal cracking is improved. The thermal cracking in FGMs is also simulated. The effects of material shape, initial temperature, and ceramic fracture toughness on thermal crack propagation behaviors are studied. It can be found that the thermal cracks in FGMs are still in periodical and hierarchical forms. The metal materials in FGMs can prevent crack initiation and arrest the long cracks. The crack number tends to be increased with the increasing initial temperature, while the strengthened ceramic fracture toughness can decrease it.

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