A Peridynamic Model for Analyzing Fracture Behavior of Functionally Graded Materials Used as an Interlayer

2020 ◽  
Vol 33 (6) ◽  
pp. 781-792 ◽  
Author(s):  
Zhanqi Cheng ◽  
Zhengqiang Fu ◽  
Yu Zhang ◽  
Hongxia Wu
Keyword(s):  
Functionally Graded Materials ◽  
Fracture Behavior ◽  
Functionally Graded ◽  
Graded Materials ◽  
Peridynamic Model ◽  
Materials Used

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.

Analysis of Fracture Behavior of Metal/Ceramic Functionally Graded Materials under Thermal Stress

2013 ◽  
Vol 750-752 ◽  
pp. 2200-2205 ◽  
Author(s):  
Cheng Fan
Keyword(s):  
Functionally Graded Materials ◽  
Fracture Behavior ◽  
Crack Formation ◽  
Ceramic Coating ◽  
Process Analysis ◽  
Failure Process ◽  
Functionally Graded ◽  
Graded Materials ◽  
Crack Morphology ◽  
Metal Ceramic

In this presented work, a coupled thermo-mechanical model is employed to analyze the thermo-mechanical behavior of ceramic functionally graded materials (FGMs) and the crack formation and propagation process of ceramic coating was simulated step in step and step by step using the RFPA (Realistic Failure Process Analysis) 2D-Thermo code. The thermal shock fracture behavior is discussed based on the basis of the simulated crack morphology and elucidated the mechanism of crack deformation and crack propagation. The state change from compression to tension whose magnitude is large enough to exceed the tension strength of ceramic causes the vertical crack. The numerical results agreed well with the experimental results in the previous literature.

A peridynamic model for dynamic fracture in functionally graded materials

2015 ◽  
Vol 133 ◽  
pp. 529-546 ◽  
Author(s):  
Zhanqi Cheng ◽  
Guanfeng Zhang ◽  
Yenan Wang ◽  
Florin Bobaru
Keyword(s):  
Functionally Graded Materials ◽  
Dynamic Fracture ◽  
Functionally Graded ◽  
Graded Materials ◽  
Peridynamic Model

Investigation of Dynamic Fracture Behavior in Functionally Graded Materials Using the Interaction Integral Method

2008 ◽  
Author(s):  
Seong Hyeok Song ◽  
Glaucio H. Paulino ◽  
Glaucio H. Paulino ◽  
Marek-Jerzy Pindera ◽  
Robert H. Dodds ◽  
...  
Keyword(s):  
Functionally Graded Materials ◽  
Dynamic Fracture ◽  
Integral Method ◽  
Fracture Behavior ◽  
Functionally Graded ◽  
Graded Materials ◽  
Interaction Integral
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