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Abstract：
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A special-purpose finite element simulation system CoinForm was developed to analyze embossing process of commemorative coin,and one-point integration solid element finite element dynamic explicit program was designed.Viscosity damping hourglass control algorithm effectively suppressed the spurious modes activated by reduced integration,and saved much more computations compared with other methods,such as stiffness method and that solved anti-hourglass force using stabilization matrix.Meanwhile,multiple layers meshes along thickness direction,3D constitutive law,radial return algorithm and adaptive mesh refine method made this system accurately describe distribution of stress and strain.Finally,compared with DEFORM-3D 5.0,the embossing simulation results of commemorative coin verified the excellent performance and effectiveness of CoinForm simulation system.
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Funds：
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国家自然科学基金资助项目(50575080);;
国家科技支撑资助项目(2006BAF01A43);;
中国博士后科学基金(20080440930)
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AuthorIntro：
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Reference：
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