本文就力学实践教学中拉伸试样断口形状问题进行探讨。
This paper discusses the fracture shape of the tensile test sample in practice teaching of mechanics.
根据轴向应力对棒料剪断方式及其断口形状的影响，设计了对螺帽锻造所用热轧棒料能进行精密剪切下料的新型结构的径向支持下料模具。
The die for the blanking under the radial clamp of nuts for 1C engine is designed based on The effect of radial stress on the shearing method for bars and the fracture shape.
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