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- dynamic fracture criterion 动态断裂准则
- The critical fracture criterion of a cylinder with V-notches on the inner surface under explosive loading is studied. 摘要以内刻V形槽战斗部圆柱壳体为研究对象,研究了其在内爆轰载荷下的临界断裂准则。
- To predict the forming limit in sheet metal forming, a ductile fracture criterion is introduced into the finite element simulation. 摘要为了准确地预测板料成形极限,将韧性断裂准则引入到有限元模拟中。
- The dynamic fracture tests in a Hopkinson bar were sometimes considered as three-point bending tests. 而Hopkinson杆动态断裂试验往往被认为是动态三点弯曲试验。
- Dynamic caustics method is introduced to study dynamic fracture behavior of a beam-column connection under impact. 摘要利用透射式动焦散线研究了冲击作用下梁柱节点的动态断裂特性。
- The dynamic fracture toughness of 921A steel in different low temperature was obtained respectively with the instrumented impact test. 采用仪器化冲击试验,分别获得了不同低温状态下921A钢的动态断裂韧度。
- The forming limits in non-axisymmetric square-cup deep drawing of aluminum alloy LF21, LY21(M) and steel st17 are predicted by means of the ductile fracture criterion (DFC) advanced by the author. 利用作者提出的韧性断裂准则预测了铝合金板LF21;LY21(M)和钢板st17非轴对称的方盒件拉深成形极限;并与成形极限图的预测结果和实验结果进行比较.
- Finally, by using the two collinear crack model and a single crack model, a new fracture criterion for brittle materials under compression was developed based on the traditional fracture criterion. 当只有两个裂纹或一个裂纹存在时,给出了准确的应力强度因子解析解。最后依据共线双裂纹模型和单裂纹模型及传统的裂纹断裂准则,建立了脆性材料在压缩载荷作用下的断裂破毁准则。
- The validity of method of dynamic fracture toughness measurement by instrumented Charpy impact test is analysed by use of the dynamic fracture test of 945-shipbuilding steel. 借助于船用945钢的动态断裂试验,对利用示波冲击测定材料动态断裂韧性方法的有效性进行了分析。
- In this paper,the maximum circumferential strain fracture criterion is proposed with a comparison of the maximum circumferential stress criterion and the strain energy density theory. 根据线弹性断裂力学,推导出了复合型裂纹的最大拉应变断裂准则,并与最大拉应力理论、应变能密度因子理论作了比较、分析;
- The results show that the fatigue properties and static and dynamic fracture toughness of 0Cr18Ni12Mo2Ti forging steel can meet the safety requirements in ASME code. This material has good comprehensive mechanical properties. 结果表明,0Cr18Ni12Mo2Ti锻钢的疲劳性能和动、静态断裂韧度满足ASME规范的安全性要求,该材料具有良好的综合力学性能。
- Because the process of rock broken is very complicated, there is a difference between the experimental data and theoretical result of expanding fissure by the present dynamic fracture theory. 由于岩石破碎过程非常复杂的,采用当前的动态断裂理论得出的裂纹扩展长度与实测值差异较大。
- A Modified Fracture Criterion for JIC 对JIC断裂准则的一种改进
- In some cases, however, it can not tell us when fracture will occur in stamping process.In this paper, several fracture criteria are introduced and these characters, usag... 但在有些情况下,它并不能准确的告诉我们在冲压过程中何时产生断裂。
- dynamic fracture and fragmentation 动态断裂与破碎
- The mechanics condition of ductile fracture of pressure vessel materials and their relations to the fracture criteria were investigated based on the micromechanics. 应用细观力学的观点分析了压力容器材料韧性断裂的力学条件,并考察了其与断裂参量的关系。
- The damage and fracture criterions and the damage localization models at the crack tip are individually established, which can better realize the true process... 建立了这两个区域的损伤断裂准则和裂纹尖端的损伤局部化模型,可以更好地反映爆生气体作用下裂纹扩展的实际过程。
- A quantitative criterion for material choice in dynamic fracture control for steel constructions 钢结构防动载断裂选材的定量判据
- ON J-INTEGRAL AS A FRACTURE CRITERION IN HETEROGENEOUS WELDED JOINT 关于非均质焊接接头中的J积分断裂判据
- A New Unified Tensile Fracture Criterion--Ellipse Criterion 新的统一拉伸断裂准则--椭圆准则