金属的工程应力(未变形单位面积上的力)称为名义应力,与之相对应的为名义应变(每单位未变形长度的伸长)。
(F是施加在 试样上的力,以为试样的初始截面积);与之对应的应变为名义应变(nominal strain),是 指变形前每单位长度的长度变化,具体表达式为g一=△f/%(△,是试样长度的变化值,厶
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名义应力应变法 nominated stress strain method
The ratio of crack mouth opening displacement (CMOD) to nominal strain was used to eliminate the loading effect.
为消除载荷大小的影响,论文将裂纹开口位移与名义应变的比值作为一个特征参数进行讨论。
参考来源 - 应用PVDF压电材料和有限元法估算结构表面裂纹深度·2,447,543篇论文数据,部分数据来源于NoteExpress
并基于突变性判据,利用互馈面实际接触面积或分形维数曲线随名义应变变化的特征,得到了坝体与坝基互馈的转异判据。
With the help of catastrophe criterion, the anomalism criterions of the crossfeed between dam body and foundation are acquired from the real contact area or fractal dimension curve vs.
通过水泥砂浆模型实验,得到了理想的名义不偶合系数与切缝宽度,测试分析了不均匀的动态应变场。
Through model experiments, reasonable decouple coefficient range and slot width are gotten, and unsymmetrical dynamic strain field is analyzed.
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