Finite Element Analysis OF Bi-Modulus Ceramic Structure
Finite Element Analysis OF Bi-Modulus Ceramic Structure
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DOI：
10.2991/lemcs-14.2014.46
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发表时间：
2014-05
期刊：
影响因子：
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通讯作者：
Ling Du;Fan-chun Li
中科院分区：
文献类型：
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作者：
Ling Du;Fan-chun Li
通过判断陶瓷梁结构应力球张量的正负，确定拉压弹性模量以及梁结构中性层的位置，即可对陶瓷梁进行结构分析。结果表明，双模数计算的第一主应力与单模数计算的第一主应力存在较大误差值。其他压力也是如此。误差值完全超出了工程允许范围。只有定义双模量，才能准确地进行陶瓷材料的结构优化分析。本文提出了通过判断应力球张量正负来确定结构拉压弹性模量的方法。基于Ansys，开发了不同弹性模量材料的拉伸和压缩分析模块。该方法计算量相对较小，适用范围广泛，甚至可以应用于大型、复杂的陶瓷结构。该方法对于陶瓷材料结构的优化具有非常重要的实际意义。关键词-陶瓷梁；应力球张量；双模；单模数
By judging positive and negative of stress balls tensor of ceramic beam structure, to determine tension and compression elastic modulus and the position of the neutral layer of the beam structure, the structural analysis of the ceramic beam could be done. The results showed that, there was a great error value between the first principal stress calculated by bi-modulus and by single-modulus. So did other stresses. The error value completely exceeded the allowable range of engineering. Only by defining the bimodulus, structural optimization analysis of ceramic materials could be accurately carried out. In this paper, the method is presented by judging positive and negative of stress balls tensor to determine tension and compression elastic modulus of the structure. Basing on Ansys, analysis modules of the materials of different modulus of elasticity in tension and compression have been developed. This method has relatively small calculation, wide range of applications and can even be applied to large, complex ceramic structures. The method for the optimization of the structure of the ceramic material has a very important practical significance. Keywords-Ceramic beam; stress balls tensor; bi-modulus; single-modulus