一种损伤演化方程的建立和几种层裂准则的推导
中国科学技术大学力学和机械工程系,合肥 230027
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摘要
通过唯象分析和细观统计相结合的方法建立了一种韧性材料的损伤演化方程,从物理上对方程中的参数进行了合理的解释,并以此为依据推导了材料的便于工程应用的几种层裂准则,根据准则总结了一些有意义的层裂规律;通过层裂实验和数值模拟相结合的方法来确定材料参数,计算结果与实验结果较好的一致性验证了所建的损伤演化方程和推导的层裂准则是合理的,决定材料参数的方法是有效的。
参考文献
[ 1 ] Rinehart JS. Some quantitative data bearing on the scabbing of metals by an explosive attack [J]. J Appl Phys,1951,22(3):555~562 链接1
[ 2 ] Whiteman P. Preliminary report on the effect of stress rate on the dynamic fracture in steel, brass and aluminium [R]. 1962, AWRE SWAN-10/61
[ 3 ] Thurstan R S, Mudd W.L. Spallation criterion for numerical computational data [R].1968, LA-4013TID-4500
[ 4 ] Davison L, Stevens A L. Continuum measures of spall damage [J]. J Appl Phys, 1972, 43(2):988 链接1
[ 5 ] Tuler F R, Butcher B M. A criterion for the time dependent of dynamic fracture [J].J Fra Mech1968,4(3):431~440
[ 6 ] Seaman L, Curran D R, Shochey D A. Computational models for ductile and Brittle fracture [J]. J Appl Phys,1976,47(11):4814~4826 链接1
[ 7 ] Johnson JN. Tensile plasticity and ductile fracture[J]. J Appl Phys,1988,64(12):6699-6711 链接1
[ 8 ] Curran D R, Seaman L, Shochey D A. Dynamic fracture of solids [J]. Physics Reports, 1987, 147(56):253-388 链接1
[ 9 ] Rajendran A M, Dietenberger M A, Grove DJ.A void growth-based failure model to describe spallation[J]. J Appl Phys,1989,65(4):1521-1527 链接1
[10] 封加波金属动态延性破坏的损伤度函数模型[D].北京理工大学,1992
[11] 李永池,李大红,魏志刚,等。内爆炸载荷下圆管变形、损伤和破坏规律的研究[J].力学学报,199931(4):442~449 链接1
[12] Ls-dyna. Theoretical Manual [M]. Lstc, May 1998
[13] Yong-chi, Tan Fu-li, Guo Ya al Determination of the damage evolution equation and spallation criterion of metals [J]. Journal of Ningbo University,2003,16(4):443-447 链接1