当外力为张力时孕育发生的是拉应力(tensile stress);当外力为压力时,孕育发生的是 压应力 ( compressive stress );当外力为剪切力时,孕育发生的是剪切应力(shear stress)。(二)应变(strain)是材料在外力作用下,单位长度的外形变化量。
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... compressive deformation 压缩变形；压缩形变 compressive resistance 抗压强度；压应力；抗压力；压电阻 compressive force 压缩力 ...
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The heavy hammer with low drop distance will reduce the maximum stress of pile top and the increase the maximum compressive stress of lower part of the pile.
结果表明:锤的质量越大,能量损耗率越小;重锤低击会减小桩顶部的最大应力,增大桩身下部的最大压应力,明显延长冲击持续时间,显著增加贯入度。
参考来源 - 重锤低击和轻锤高击沉桩效果分析When taking brow and chin as pivots to protract the maxilla, the whole lower mandible will rotate downward and backward while the drawing stress and compressive stress are coexisted, and the neck of condyle bears the strongest force.
6．以额、颏为抗基前牵引上颌，下颌骨整体向下向后旋转，其拉、压应力并存，髁突颈部受力最大。
参考来源 - 颅面复合体三维有限元模型的建立及上颌前牵引的生物力学研究·2,447,543篇论文数据，部分数据来源于NoteExpress
玻璃不能在接口处膨胀，因此表面存在了压应力。
Glass cannot bulge at the seams, so the surface becomes compressed.
对裙座所受轴向压应力进行校核，可知裙座满足稳定性条件。
Checking the axial compressive stress of the skirt, deduces that it is stable.
为此，SKF研制了材料表面处理工艺，可增强表面硬度，并产生压应力。
For this, SKF developed material finishing technology, can enhance exterior hardness, arise press stress.
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