试样内部各部位的应力大小分布不均匀，随应变速率的增大，最小应力值由自由变形的鼓形区域逐步向心部移动；
The effective stress of specimen is inhomogeneous. As the strain rate increases, the minimum stress value moves from the drum-shaped region to the heart of specimen.
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.
在它的作用下，块体边界或某些部位出现应力不均匀并有应变能的积累。
The stress non uniformity and accumulation of energy on the boundary or in certain parts of some blocks appear.
发现缺口前沿各点的应变速事分布足很不均匀的，并随加载时间而改变。
It was indicated that the strain rate is distributed unevenly and changes with loading time.
还讨论了材料各向异性、应变率敏感性、不均匀性及其幅度、惯性等因素对塑性失稳的影响。
The effects of anisotropy, strain rate sensitivity, imperfection and its amplitude and inertia on plastic instability are discussed.
超塑性胀形控制有各种方法，本文介绍了一种按气压与高度曲线控制的方法，使成形过程更接近于等应变速率胀形，能进一步改善零件厚度的不均匀性。
This paper introduces a method to controll a superplastic bulging by a gas-pressure and a height curve. This method can significantly reduce the thinning rate and unevenness of bulging material.
在相同的平面应变下，塑性弛豫引起的电荷分布不均匀性变化小于弹性变形。
The variation is smaller in plastic relaxation than the elastic one under the same in-plane strain.
冷变形提高了钢中位错密度，也加剧了位错分布的不均匀性，后者是预应变加速组织演变的直接原因。
Cold deformation results in increasing of dislocation density and inhomogeneous dislocation distribution, the latter is the direct reason for pre-strain to promote microstructural evolution.
应变波通过铁磁性杆件时，由于压磁效应，可以激发出不均匀的磁流。
When strain waves pass through a ferromagnetic bar, owing to piezomagnetic effect, a nonuniform magnetic current will be stimulated by the strain wave simultaneously.
此外，还简化了钢筋应变不均匀系数的计算公式。
The coefficient proposed in this paper has clear geometrical and physical meanings. Furthermore, the formula for calc…
此外，还简化了钢筋应变不均匀系数的计算公式。
The coefficient proposed in this paper has clear geometrical and physical meanings. Furthermore, the formula for calc…
应用推荐