1) multisurface plasticity
多屈服面
1.
Afterwards, the multisurface plasticity model is adopted for the analysis of the localization of rocks with crack sets and conditions for both continuous bifurcation and discontinuous bifurcation are formulated.
借鉴单晶体塑性理论,构建了岩体的多屈服面模型,用以模拟岩体中初始存在的多组裂隙。
2) multiple yield surface
多重屈服面
1.
The application of the multiple yield surface to soil constitutive theory provides the possibility for accurately simulating the behavior of soils.
在土体本构理论中,多重屈服面的引入为合理描述土体剪应变与体应变提供了可能,尽管如此,现有多重本构关系仍不能很好的反映π平面上剪应力增量矢量dq对剪应变增量矢量dγp的影响。
3) Multiple yieldings
多重屈服
5) yield surface
屈服面
1.
Combination of 3-yield surface model with SMP criterion;
土的三重屈服面应力-应变模型与SMP准则的结合
2.
The simulation of the yield surface of natural sand with experimental data;
由试验数据拟合天然砂土的屈服面
3.
Theory of yield surface and stress strain relation in generalized plastic mechanics;
广义塑性力学中的屈服面与应力-应变关系
6) Yielding surface
屈服面
1.
The unified macro and micro mechanics constitutive model was used to investigate the influence of micro-structural geometry,such as fiber shape and fiber packing array,on the composite initial yielding surfaces under multi-axial loading.
采用宏—细观统一的弹塑性本构模型分析了多轴载荷作用下不同纤维形状、不同纤维排列方式对金属基复合材料初始屈服面的影响。
2.
Standard for the determination of the least favourable direction of ground motion for bridge is established using the yielding surface function proposed by Bresler.
首先利用Bresler建议的屈服面函数形式作为地震动最不利输入方向的标准,然后由反应谱法确定截面内力(弯矩),并按SRSS法组合,再引入莫尔圆来确定地震动最不利输入方向和截面内力最大值。
补充资料:多晶屈服
多晶屈服
yielding of polycrystal
duoJJng qufu多晶屈服(yielding of polyerystal)多晶金属所受应力超过一定值时所发生的、由弹性变形过渡到塑性变形的现象。多晶体的屈服可以在晶内或晶粒间进行,变形的基本方法为滑移或孪生以及晶粒的移动和转动。晶粒的移动和转动可以促进晶粒变形条件的改善,但也是造成晶间联系破坏、出现内部显微裂纹的根源。 多晶屈服时一个晶粒的变形必须与相邻晶粒的变形相协调,以克服晶粒间界对滑移的阻碍作用及多个滑移系同时启动时位错的相互干扰。多晶体屈服应力比单晶体的高,差别程度主要取决于晶体点阵类型与晶粒尺寸。 (曹乃光)
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