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Clinching is a mechanical joining method in which two sheet workpieces are clamped and locked together using a punch and a die. Process parameters for such joint elements are often designed based on numeric simulation. Before this step, the identification of good material parameters is crucial to get validated computational results. In this paper, neural network metamodels are used for this specific...
The identification of defect parameters in thermal non-destructive test and evaluation (TNDT/E) was considered as a kind of inverse heat transfer problem (IHTP) and a kind of structure design optimization problem, and the design results should meet the surface temperature profile of the apparatus with defects. An improved bacterial colony chemo taxis (IBCC) optimization algorithm and a radial basis...
Due to the geometry configure of composite insulator, the electric field strength near the two ends of composite insulator is always strong. The high electric field strength can cause the partial discharge on the insulation material and the surface of the metal electrodes, and bring premature aging of the insulator. In this paper, a new optimization method on the electric field distribution of composite...
The identification of defect parameters in thermal non-destructive test and evaluation (NDT/E) was considered as a kind of inverse heat transfer problem (IHTP). However, it can be farther considered as a shape optimization problem then a structure design optimization problem, and the design results should meet the surface temperature profile of the apparatus with defects. A bacterial colony chemotaxis...
Nedelec's functional spaces of H1(curl) hierarchical tetrahedral vector elements are analyzed systematically by using the method combined Nedelec constraints and complete polynomials. The relations between various vector elements and the functional spaces are validated. The results of a numerical experiment that investigates the resonant problem of a rectangular cavity, compare the performance of...
In order to study the interactive action of local and overall buckling, a test program of cut-t struts was performed. Based on that, a nonlinear finite element model for interaction between local and overall buckling on singly symmetric section is made by using the general finite element software ANSYS. In the model, factors such as initial imperfections, geometric and material nonlinearity are considered...
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