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Showing 1 to 11 of 11 for “"Cohesive Zone Modeling"”.
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Cohesive zone modeling of fracture of sustainable and functionally graded concrete
… is developed; which incorporates a variety of cohesive zone models (CZMs) into an implicit, nonlinear finite element scheme. Intrinsic cohesive zone elements, with traction-separation relationships defined along the crack surface, are utilized to simulate mode I fracture of the slabs. Based on …
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Fracture of Asphalt Concrete: A Cohesive Zone Modeling Approach Considering Viscoelastic Effects
… occurring in a relatively large fracture process zone, a cohesive zone model (CZM) is employed. Finite element implementation of the CZM is accomplished via user subroutines that can be used in conjunction with general-purpose software. The bulk properties (e.g. relaxation modulus) and fracture …
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Quasi-static non-ordinary state-based peridynamics for the modeling of 3D fracture
A majority of the efforts in modeling crack propagation have used continuum models built upon partial derivatives with respect to the spatial coordinates in the force and displacement relationship. These methods are inherently incompatible for modeling cracks because the partial derivatives are …
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Computational Micromechanics Analysis of Deformation and Damage Sensing in Carbon Nanotube Based Nanocomposites
… is studied using coupled electromechanical cohesive zone modeling. It is observed that the interfacial separation and damage at the nanoscale leads to a larger nanocomposite irreversible piezoresistive response under monotonic and cyclic loading because of interfacial damage accumulation. As …
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A Computational Thermo-Chemo-Mechanics Framework for the Large-Scale Simulation of Material and Structural Failure in Hypersonic Environments
… extends the scalable discontinuous Galerkin(DG)/Cohesive Zone Modeling paradigm to thermo-chemo-fracture mechanics. The approach is distinguished by its unified DG treatment of the coupled problems, which facilitates the analysis of fracture propagation, fracture-dependent heat and mass transfer …
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Durability and Damage Analysis of Hybrid Multiscale Composites
… reinforcements. ANSYS simulations employed both cohesive 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 …
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Laser-driven micro-transfer printing for MEMS/NEMS integration
… the ink-stamp interface to release the inks. The modeling approach is based on first developing an analytical optical absorption model, based on Beer-Lambert law, under the assumption that optical absorption during the LMTP process is decoupled from thermo-mechanical physics. The optical …
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Adaptive finite element simulation of fracture: from plastic deformation to crack propagation
… procedures for populated areas in high seismic zones in the event of rupture in the earth's crust. In order to achieve a better understanding of how any of these structures fail, experimental, theoretical, and computational advances must be made. In this dissertation we will focus on …
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Global-local Finite Element Fracture Analysis of Curvilinearly Stiffened Panels and Adhesive Joints
… defined in the vicinity of the critical stress zone. With the damage tolerance study of unitized structures as the focus, responses of curvilinearly stiffened panels to the combined shear and compression loadings were studied for different stiffeners' height. It was observed that the magnitude …
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Integrated Sinc Method for Composite and Hybrid Structures
Composite materials and hybrid materials such as fiber-metal laminates, and functionally graded materials are increasingly common in application in aerospace structures. However, adhesive bonding of dissimilar materials makes these materials susceptible to delamination. The use of integrated Sinc …
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Progressive damage analysis for aerospace composite structures subjected to impact loads
L'abstract è presente nell'allegato / the abstract is in the attachment