The Verification of Computing J-Integral in Functionally Graded Material
The Verification of Computing J-Integral in Functionally Graded Material
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DOI：
10.4028/www.scientific.net/amr.268-270.863
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发表时间：
2011-07
期刊：
影响因子：
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通讯作者：
Z. Xuan;Y.H. Li;Q.J. Zhang;M. Guan
中科院分区：
文献类型：
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作者：
Z. Xuan;Y.H. Li;Q.J. Zhang;M. Guan
提出了一种功能梯度材料j积分有限元计算的验证方法。通过对感兴趣的量的输出定界过程，得到了j积分的区间。均质材料与功能梯度材料的区别在于，误差方程中二次项前的参数是一个坐标函数，而非均质材料中的常数。为了得到j积分的有效界，计算了参数的最优值。
We present a verification method for the finite element computation of the J-integrals in functionally graded material. An interval is obtained for the J-integral by an output bound procedure for the quantity of interest. The difference between homogeneous material and functionally graded material is that the parameter before the quadratic term in the error equation is a function of coordinates, not a constant in the homogeneous material. An optimal value for of the parameter is calculated for obtaining efficient bounds on the J-integral.