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Showing 1 to 8 of 8 for “"VCCT"”.
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Application of fracture mechanics to predict the growth of single and multi-level delaminations and disbonds in composite structures
… and the virtual crack closure technique (VCCT) were selected for assessment. Extensive validation of these fracture mechanics methods is presented on a number of composite structures ranging from coupons to large stiffened panels. It was shown that the VCCT was relatively insensitive to …
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Detecting Delamination in Carbon Fiber Composites Using Piezoresistive Nanocomposites
… testing. Virtual Crack Closure Technique (VCCT) is used to model a delamination in the composite sample. Experimental results and the simulations in this study indicate that piezoresistive nanocomposites can be used for detecting delamination in carbon fiber composite materials.</p>
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Fatigue Crack Growth Analysis with Finite Element Methods and a Monte Carlo Simulation
… than 3%. The Virtual Crack Closure Technique (VCCT) was selected as a method for crack propagation along a predefined path. Stress intensity factors (SIFs) for shorter crack lengths were found to be low, resulting in an overestimated life of about 8%. The eXtended Finite Element Method with …
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Developing new multiscale models for the numerical simulation of Pultruded GFRP Structural Elements
… Method (XFEM), Virtual Crack Closure Technique (VCCT), Cohesive Zone Modelling (CZM), Multiscale Reduced Order Modelling (ROM), and Random Lattice Modelling (RLM). Each method's distinctive features, challenges, and capabilities are discussed in detail. The aim is to assess the reliability of …
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Durability and Damage Analysis of Hybrid Multiscale Composites
… zone modeling (CZM) and virtual crack closure (VCCT) technique to model interlaminar delamination. The results in all the three setups showed that coarser patterns of carbon nanotubes on the carbon fiber surface perform better in resisting crack propagation due to more efficient energy …
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A novel discrete damage zone model and enhancement of the extended finite element method for fracture mechanics problems
… from the virtual crack closure technique (VCCT) and available analytical solutions, thus, illustrating the validity of this approach. The suitability of the method for studying fracture in fiber-matrix composites involving fiber debonding and matrix cracking is demonstrated. Finally, the …
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Fretting Fatigue Characterization of Steel Bolted Connections
… ABAQUS via the virtual crack closure technique (VCCT) coupled with the extended finite element method (XFEM) in conjunction with the direct cyclic procedure to stimulate the crack growth life and path. Overall, the prediction of the crack initiation location using both the SWT criterion and the …
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Global-local Finite Element Fracture Analysis of Curvilinearly Stiffened Panels and Adhesive Joints
Global-local finite element analyses were used to study the damage tolerance of curvilinearly stiffened panels; fabricated using the modern additive manufacturing process, the so-called unitized structures, and that of adhesive joints. A damage tolerance study of the unitized structures requires …