vgc 中文意思是什麼
vgc
解釋
粘度比重常數-
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
對裂紋尖端張開位移ctod及其張開型分量~ 1和剪切型分量~ 11的分析表明，在試件發生韌窩型斷裂時，按照圓弧裂紋中ctod矢量的垂直方向預測的斷裂角與試驗測得的斷裂角符合較好，與三軸度脊線預計的結果也比較一致。 -
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
綜上所述，本文通過對圓弧尖端裂紋的分析表明：對于韌窩型斷裂的起裂，可以依據-復合型斷裂的sx準則按照i ~ 1來預測起裂載荷，也可用v _ （ gc ）判據來預測起裂載荷，二者結果相近；對于韌窩型斷裂的斷裂角，用ctod矢量方向和三軸度脊線方向判斷均和試驗結果基本。 -
Vgc standard test method for calculation of viscosity - gravity constant of petroleum oils
石油潤滑油粘度-重力常數 -
One is void - model fracture which is resulted from initial, dilatation and coalescence of voids in material. the fracture criterion of void - model fracture is vgc - criterion or ctodi - criterion, and its fracture angle is able to be determined by m - criterion
韌窩型斷裂由材料內空穴的形核、擴張和匯合造成，斷裂判據可以採用「 v _ （ gc ）準則」或ctod ~ i準則，斷裂角可以採用m準則確定。
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