Weight Function Method for computations of crack face displacements and stress intensity factors of center cracks
Journal Title: Frattura ed Integrità Strutturale - Year 2015, Vol 9, Issue 33
Abstract
The weight function method provides a powerful and reliable tool for the determination of the stress intensity factor around the crack tip in a linearly elastic cracked solid subjected to arbitrary loading conditions. However, it is difficult to exactly compute the crack face displacement whose partial derivative is responsible for the weight function calculation. In the present paper, only one reference stress intensity factor is used for the purpose of establishing a general expression of the crack face displacement. Then, the generalized and simple expression is applied to calculate the weight function and the stress intensity factor of the center crack configuration. The calculation of the weight function is reduced to the simple integration of the correction function and of the partial derivative of the crack face displacement. It is shown that the present expressions for the computations of the crack face displacement and its partial derivative are in good agreement with their exact solutions.
Authors and Affiliations
Junling Fun, Dengke Dong, Li Chen, Xianmin Chen, Xinglin Guo
Keywords
Related Articles
- EP ID EP132591
- DOI 10.3221/IGF-ESIS.33.51
- Views 53
- Downloads 0
Measurement and simulation of crack growth rate and direction under non-proportional loadings
A series of fatigue experiments on thin-walled tubes under tension and torsion, the experimental results – crack path and crack growth life – are measured and compared. It is observed that the cracks follow a ...
A robust approach for the determination of Gurson model parameters
Among the most promising models introduced in recent years, with which it is possible to obtain very useful results for a better understanding of the physical phenomena involved in the macroscopic mechanism of cr...
A simple beam model to analyse the durability of adhesively bondedtile floorings in presence of shrinkage
A simple beam model for the evaluation of tile debonding due to substrate shrinkage is presented.The tile-adhesive-substrate package is modeled as an Euler-Bernoulli beam laying on a two-layer elasticfoundation. An...
Electro-mechanical coupled design of self-powered sensing systems and performances comparison through experiments
Recent advances in low-power sensors and electronic components open to innovative strategies in structural monitoring and real-time data processing, in particular for industrial and vehicular fields. Dedicated devi...
Design of a novel magnetorheological damper with internal pressure control
In this work we designed and manufactured a novel magnetorheological (MR) fluid damper with internal pressure control. Previous authors’ works showed that the yield stress τB of MR fluids depends both on the magne...