Ductile damage mechanics model and rigid finite element method was adopted to simulate the sheet metal shearing process.
应用韧性损伤力学模型以及刚塑性有限元法，分析了金属板材剪切断面变形的过程。
Finally, the ductile damage and failure behaviors of aluminum alloys LY12-CZ thin-slabs were investigated both analytically and experimentally.
文中还就LY 12 -CZ薄板材料的损伤与破坏行为进行了实验测试与分析。
The studying method and the general contents of microvoids growth models for dynamic ductile damage of metals are introduced and the newest models are evaluated.
介绍了金属延性动态损伤的微孔生长模型的研究方法和一般内容。
The damage occurred primarily at welded beam-to-column connections, which had been designed to act in a ductile manner and to be capable of withstanding repeated cycles of large inelastic deformation.
基本上破坏都出现在梁与柱的焊接处，而此处的韧性设计是为抵挡周而复始的大量建筑非弹性变化。
Plastic damage of ductile metals under complex stress depends on loading path.
在复杂应力状态下延性金属材料的塑性损伤依赖于加载路径。
According to principle of damage mechanics, the evolutional law of damage in pearlite ductile cast iron has been studied under fatigue and tension loading.
利用损伤力学原理，研究了珠光体球墨铸铁在疲劳和拉伸载荷作用下的损伤演变规律。
By using measurement of mechanical parameters and microscopic observation, the effect of initial damage on the ductile fracture initiation toughness of steel was investigated experimentally.
通过力学参数测量和微观观察研究了初始损伤对钢的延性起裂韧性影响。
According to the principle of damage mechanics, the evolutional law of fatigue damage of pearlite ductile cast iron was studied with double arms electrical bridge for measuring electrical resistivity.
根据损伤力学原理，用双臂电桥测量电阻的方法，研究了珠光体球墨铸铁的疲劳损伤演变规律。
The results showed that with increasing the amount of the initial void damage, the ductile fracture initiation toughness of steel decreases.
研究结果表明，随钢组织在预加载荷中产生的微孔洞初始损伤量的增加，其延性起裂韧性降低。
Proved by the test data, the precision of constitutive model with brittle, ductile failure is higher, which can provide accurately the basis for rock damage assessment.
经实测数据与所建模型对比验证，延性破坏、脆性破坏模式本构模型精度较高，可为岩石损伤评估提供依据。
The effects of strength mis-matching and specimen geometry on the resistance behavior to ductile crack growth for welded joint were conducted by 3-D FE analysis considering the micro-plastic damage.
通过考虑材料微观塑性损伤，定量研究了焊接接头中强度匹配、试件几何形状对接头抗延性裂纹扩展行为的影响。
Due to the addition of rubber granules, the deformation of concrete will be larger in damage, and the damage form will be changed from brittle fracture to ductile fracture.
混凝土中掺入橡胶颗粒后，在破坏时产生较大的变形，破坏形式由脆性破坏变为延性破坏。
The results show that the fatigue damage variable of pearlite ductile cast iron as a function of fatigue cycle varies according to the index law.
结果表明：球墨铸铁的疲劳损伤变量随疲劳周数呈指数规律变化；
The threshold value of damage and maximum strain are adopted as failure criterion to reflect fatigue failure and ductile failure respectively.
针对材料不同的失效模式，分别采用损伤变量门槛值和最大应变作为失效判据。
It is shown that the proposed ductile fracture model can accurately and effectively predict the whole damage process of ductile metals including crack initiation, propagation and final fracture.
结果表明，该模型可很好地预测延性金属材料自裂纹萌生、扩展直至完全断裂的全过程。
It is shown that the proposed ductile fracture model can accurately and effectively predict the whole damage process of ductile metals including crack initiation, propagation and final fracture.
结果表明，该模型可很好地预测延性金属材料自裂纹萌生、扩展直至完全断裂的全过程。
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