The effect of punch virtual velocity and sheet virtual density on the sheet strain energy was studied in this paper.

从理论上分析了凸模虚拟速度和板料虚拟密度对薄板变形能的影响。

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For the simulation accuracy of springback problem in sheet metal forming, the effect of punch virtual velocity and sheet virtual density on the sheet strain energy was studied in this paper.

针对板料成形回弹精度问题的数值模拟，从理论上分析了凸模虚拟速度和板料虚拟密度对薄板变形能的影响。

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The results show that, the gas pressure, electrical current, and the virtual breadth of the annular electrode affect the radial distribution of the plasma density and temperature.

结果表明，放电气压、电流以及环电极的有效宽度均影响等离子体密度和温度的径向分布。

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He studies the material properties of tissue and organs from animals and cadavers to assign shape, size, density, mass and ten or more coefficients that describe how each cube of virtual flesh will deform when confronted with a given force from a given direction.

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