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Showing 1 to 12 of 12 for “"time finite element"”.
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High Cycle Fatigue Simulation using Extended Space-Time Finite Element Method Coupled with Continuum Damage Mechanics
… the traditional computational method based on Finite Element Method (FEM) and semi-discrete schemes for fatigue design and analysis. Semi-discrete schemes are known to suffer from either the time-step constraints or lack of convergence due to the oscillatory nature of the fatigue loading …
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A Space -Time Finite-Element Method for the Signorini Problem and for Viscoplasticity With Small Elastic Dilatations
We develop a space-time, finite-element analysis to simulate the indentation process accurately. The space-time nature of the code allows high degrees of time refinement in the region of interest immediately beneath the indenter, thus improving the computational efficiency of the simulation. The …
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A Numerical Study of Intergranular and Oxidation-Driven Fracture in an Elastic-Viscoplastic Material
… of grain boundaries by oxygen. A novel space-time finite element model is developed to study this mechanism. The numerical model provides the basis for generic investigations of the kinetics of quasi-static crack growth along a brittle interface (such as an oxidized grain boundary) embedded in …
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Special methods for fluid-object interactions and space-time computations
… can improve the efficiency of traditional space-time finite element computations. Many repetitive, unnecessary calculations can be eliminated by reformulating shape function derivatives and re-structuring the element-level matrix/vector calculations. There is the potential for large computational …
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SENSPECTRA : an elastic, strain-aware physical modeling interface
… and refines a physical 3D model of discrete elements with a real-time visualization of structural strain. While the Senspectra infrastructure provides a flexible modular sensor network platform, its primary application derives from the need to couple physical modeling techniques utilized in …
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A Spacetime, Balance-Law Formulation of Coupled Atomistic and Continuum Dynamics for Solids
… that enforces these balance laws on the atom/element level while minimizing spurious reflections. The coupled formulation is composed of the continuum spacetime discontinuous Galerkin (SDG) method and the mathematically consistent, time finite element, atomistic discontinuous Galerkin (ADG) …
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Development and Applications of Finite Elements in Time Domain
A bilinear formulation is used for developing the time finite element method (TFM) to obtain transient responses of both linear, nonlinear, damped and undamped systems. Also the formulation, used in the h-, p- and hp-versions, is extended and found to be readily amenable to multi-degree-of-freedom …
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Non-smooth dynamics and sensitivity analysis of multibody systems with clearances and friction in differential variational inequality framework
… modeled by nonlinear unilateral spring-damper elements, the non-smooth dynamics approach results in a differential variational inequality (DVI) problem with complementarity constraints. This work provides a comprehensive re view of key contributions in the field of non-smooth dynamics and …
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Non-destructive evaluation of solder joint reliability
… the measurement technique in combination with Finite Element Analysis (FEA) to study the impact of component floor plan layout on the reliability of electronics systems subjected to thermal cycling. A comprehensive review of current and emerging packaging and interconnect technologies has shown …
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Arbitrary high order discontinuous Galerkin methods for the shallow water and incompressible Navier-Stokes equations on unstructured staggered meshes
… unstructured curved meshes. Isoparametric finite elements are used to take into account curved domain boundaries. Regarding two-dimensional shallow water equations, the discrete free surface elevation is defined on a primal triangular grid, while the discrete total height and the discrete …
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Spacetime meshing of stratified spaces for spacetime discontinuous Galerkin methods in arbitrary spatial dimensions
We introduce the spacetime discontinuous Galerkin method and motivate the need for supporting spacetime meshing on meshes comprised of multiple manifolds. We first discuss preliminary concepts behind simplices, simplicial complexes, and the generalization to oriented simplicies. Using these ideas, …