in this paper the critical strain energy release rate for t300/913 carbon-epoxy laminated composites has been studied using ansys finite element software based on virtual crack closure technique ( vcct ). compact tension ( ct ) specimen has been used for numerical analyses and the geometrical dimensions have been extracted from the existing references. the results obtained from the finite eleme...

In this paper a new method to determine the fracture properties and strain energy release rate for Carbon- Polyester composite has been introduced.  Fracture characteristics such as critical stress intensity factor and critical strain energy release rate for mode I, mode II and mixed mode loading were determined using Arcan type specimen. 130 layers of carbon fiber polyester woven composite wit...

Finite element analysis of the delamination crack propagation in laminated composites is presented. Fracture mechanics based Virtual Crack Closure Technique (VCCT), and the cohesive element technique, have been used to simulate the delamination initiation and propagation under Mode-I type loading. Detailed description of the parameter selection process for these two techniques with ABAQUS®/Stan...

In this article, a three-dimensional finite element model (FEM) is used to predict the crack growth at weld toe of pre-fatigued T-joint that was repaired with remelting technique. The numerical models were developed using MSC.Marc software. Fatigue life estimated by integrating Paris-Erdogan law. stress intensity factors are obtained virtual closure technique (VCCT). T-welded joints, made S355 ...

using computation software to simulate fracture behaviors of structures can shorten the time to estimate safety of engineering structures and reduce a lot of cost of experiment. However three dimensional numerical simulation for fracture process is a challenging issue, because the convergence and accuracy are not easily obtained and high computational cost is generated. In this paper, three new...

In pipelines for transporting oil and gas, multiple cracks often exist in weld joints. The interaction among the should be considered as it directly affects life span of pipeline structures. current investigation, based on fluid–solid magnetic coupling model, virtual crack-closure technique (VCCT) is applied to systematically study multi-crack dynamic effect welds during crack propagation proce...

In this study, a new adhesive contact model is built upon boundary element method (BEM) developed by Pohrt and Popov (2015). The strain energy release rate (SERR) on the edge of bonding interface evaluated using Virtual Crack Closure Technique (VCCT) which shown to have better accuracy weaker mesh-size dependency than closed-form SERR formula derived Popov. A composite delamination criterion pr...

0026-2714/$ see front matter 2012 Elsevier Ltd. A http://dx.doi.org/10.1016/j.microrel.2012.06.140 ⇑ Corresponding author. E-mail address: [email protected] Through-silicon vias (TSVs), being one of the key enabling technologies for three dimensional (3D) integrated circuit (IC) stacking, silicon interposer technology, and advanced wafer level packaging (WLP), has attracted tremend...

The assessment of fatigue crack propagation steel structures is essential and important especially to improve the application high strength in construction. load ratio R, reflecting mean stress effects, will be changed with extension complicated geometry. In this paper, Walker equation employed fit rate grades S355 S690 based on experimental data literature incorporate effects. material paramet...

The standard experimental procedures for determining the interlaminar fracture toughness are designed delamination propagation in unidirectional specimens. However, aerospace structural components, usually occurs between plies at different orientations resulting damage mechanisms which can increase value of as propagates. Generally, numerical analyses employ measured onset, leading to conservat...