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A 3D finite element model of heat and fluid flow in welding pool considering free surface of the pool and traveling speed has been developed. To validate the model predictivity, numerical and experimental sensitivity analyses were conducted using a design of experiments approach. The method FEM is used to compute all the governing equations and the method' front tracking' has been used to solve capillarity...
Dynamic characteristics of some electrical actuators such as contactor or relay can be accurately obtained with Finite Element method though the calculation takes usually long time. However, for some high power device such calculation can be meaningless because it disregards the thermal effects of the coil. And these thermal effects can produce significant impaction to the output characters. Indeed...
An improved realistic mass-spring model, which is mainly based on the 3D finite strain nonlinear anisotropic elasticity theory, is presented for virtual reality based surgery simulation. Compared with the conversional mass-spring model, the proposed model is able to describe typical behaviors of living tissues such as incompressibility, nonlinearity and anisotropy. The nonlinear viscoelasticity is...
In this paper, a pre-processing toolkit for three-dimensional extended finite element method (X-FEM) is discussed and employed for three-dimensional arbitrary crack growth simulation. The major topics includes the framework of X-FEM toolkit, formulations of 3D crack using level sets, the data structure of pre-processing toolkit and corresponding implementation. Using simple 11times11times11 cubic...
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