Cohesive Modeling of Dynamic Crack Growth in Homogeneous and Functionally Graded Materials

2008 ◽  
Author(s):  
Zhengyu Zhang ◽  
Glaucio H. Paulino ◽  
Waldemar Celes ◽  
Glaucio H. Paulino ◽  
Marek-Jerzy Pindera ◽  
...  
Keyword(s):  
Crack Growth ◽  
Functionally Graded Materials ◽  
Functionally Graded ◽  
Dynamic Crack ◽  
Graded Materials ◽  
Dynamic Crack Growth ◽  
Cohesive Modeling

scholarly journals Extended radial point interpolation method for dynamic crack analysis in functionally graded materials

2015 ◽  
Vol 18 (2) ◽  
pp. 59-66
Author(s):  
Nha Thanh Nguyen ◽  
Bang Kim Tran ◽  
Tinh Quoc Bui ◽  
Thien Tich Truong
Keyword(s):  
Functionally Graded Materials ◽  
Dynamic Stress ◽  
Interpolation Method ◽  
Functionally Graded ◽  
Dynamic Crack ◽  
Dynamic Stress Intensity Factors ◽  
Graded Materials ◽  
Radial Point Interpolation ◽  
Point Interpolation Method ◽  
Point Interpolation

Functionally graded materials (FGMs) have been widely used as advanced materials characterized by variation in properties as the dimension varies. Studies on their physical responses under in-serve or external loading conditions are necessary. Especially, crack behavior analysis for these advanced material is one of the most essential in engineering. In this present, an extended meshfree radial point interpolation method (RPIM) is applied for calculating static and dynamic stress intensity factors (SIFs) in functionally graded materials. Typical advantages of RPIM shape function are the satisfactions of the Kronecker’s delta property and the high-order continuity. To assess the static and dynamic stress intensity factors, non-homogeneous form of interaction integral with the nonhomogeneous asymptotic near crack tip fields is used. Several benchmark examples in 2D crack problem are performed such as static and dynamic crack parameters calculation. The obtained results are compared with other existing solutions to illustrate the correction of the presented approach.

Transient Elastodynamic Crack Growth in Functionally Graded Materials

2008 ◽  
Author(s):  
Vijaya B. Chalivendra ◽  
Glaucio H. Paulino ◽  
Marek-Jerzy Pindera ◽  
Robert H. Dodds ◽  
Fernando A. Rochinha ◽  
...  
Keyword(s):  
Crack Growth ◽  
Functionally Graded Materials ◽  
Functionally Graded ◽  
Graded Materials

scholarly journals Mixed-Mode Crack Propagation in Functionally Graded Materials

2005 ◽  
Vol 492-493 ◽  
pp. 409-414 ◽  
Author(s):  
Jeong Ho Kim ◽  
Glaucio H. Paulino
Keyword(s):  
Numerical Simulation ◽  
Crack Propagation ◽  
Crack Growth ◽  
Functionally Graded Materials ◽  
Mixed Mode ◽  
Fracture Criterion ◽  
Functionally Graded ◽  
Graded Materials ◽  
Mixed Mode Crack ◽  
Specific Fracture

This paper presents numerical simulation of mixed-mode crack propagation in functionally graded materials by means of a remeshing algorithm in conjunction with the finite element method. Each step of crack growth simulation consists of the calculation of the mixedmode stress intensity factors by means of a non-equilibrium formulation of the interaction integral method, determination of the crack growth direction based on a specific fracture criterion, and local automatic remeshing along the crack path. A specific fracture criterion is tailored for FGMs based on the assumption of local homogenization of asymptotic crack-tip fields in FGMs. The present approach uses a user-defined crack increment at the beginning of the simulation. Crack trajectories obtained by the present numerical simulation are compared with available experimental results.

Fatigue Crack Growth Analysis Models for Functionally Graded Materials

2008 ◽  
Author(s):  
Serkan Dag ◽  
Baris Sabuncuoglu ◽  
Bora Yildirim ◽  
Glaucio H. Paulino ◽  
Marek-Jerzy Pindera ◽  
...  
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Functionally Graded Materials ◽  
Growth Analysis ◽  
Functionally Graded ◽  
Graded Materials ◽  
Analysis Models
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