Triaxiality draw bender and plane draw bender 2三维拉弯机平面拉弯机
2.
Energy dissipation in particulate - reinforced viscoelastic materials under the condition of high stress triaxiality 高三轴应力条件下粒子填充粘弹性材料的能量耗散
3.
Study two kinds of fracture modes of i - ii complex ductile fracture of metal under room temperature and positive triaxiality 本文对金属材料?复合型韧性断裂存在的韧窝型和剪切型两种断裂模式进行了讨论。
4.
The damage evolution law obtained from the model is related to the void volume fraction , the void shape , as well as triaxiality stress 进而采用hill自治方法，得到了珠光体材料宏观损伤本构描述，并发展了相应的数值方法与程序。
5.
There is a criteria triaxiality , which is a material constant , which when triaxiality of material is larger than the fracture belongs to void - mode , and in reverse , belongs to shear - mode 存在材料常数? ?临界应力三轴度，材料内应力三轴度高于临界值时，断裂为韧窝型的，反之，为剪切型的。
6.
The thesis studied the change of stress triaxiality in the four - point curved beam made in 16mnr with arc - tip crack and its important effect . in the beam , the points of peak value of stress triaxiality distribute along a line , whose direction is well consistent with the fracture direction got by experiment when so > 3mm 在圆弧裂纹试件中，裂尖附近的三轴度较高的点呈脊线分布，按照脊线分布拟合计算得到的三轴度脊线夹角在偏心距so 3mm时与试验测得的断裂角符合较好，这种情况下试件发生的是韧窝型断裂。
7.
In short , the analysis of arc - tip fracture shows that : the initiation of void - mode fracture can be judged by vgc criterion , or by j " . according to sx criterion ; fracture direction of void - mode fracture can be determined by ctod and peak value line of stress triaxiality . the mesomechanics mechanism of shear - mode fracture need further study , and analysis found direction of plastic belt is consistent with the direction of shear - mode fracture 综上所述，本文通过对圆弧尖端裂纹的分析表明：对于韧窝型断裂的起裂，可以依据-复合型断裂的sx准则按照i ~ 1来预测起裂载荷，也可用v _ ( gc )判据来预测起裂载荷，二者结果相近；对于韧窝型断裂的断裂角，用ctod矢量方向和三轴度脊线方向判断均和试验结果基本。
8.
Research about ctod and its components 8 " , " shows that the direction angle of ctod vector is identical with the fracture angle of void - mode fracture , which is obtained through experiments , and it is also identical with the result got by peak value line of stress triaxiality . besides , 8 i " was compare with vgc as criterion for initiation of void - mode fracture 对裂纹尖端张开位移ctod及其张开型分量~ 1和剪切型分量~ 11的分析表明，在试件发生韧窝型断裂时，按照圆弧裂纹中ctod矢量的垂直方向预测的断裂角与试验测得的断裂角符合较好，与三轴度脊线预计的结果也比较一致。
