文章摘要信息 关键词 : 煤巷顶板锚固孔;钻进速度;应力状态 [gap=912]Keywords : anchorage hole on coal roadway roof;drilling velocity;stress states
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stress states a 应力状态
various stress states 不同应力状态
crustal stress states 地应力状态
biaxial-stress states 双轴应力状态
complex stress states 复杂应力状态
triaxial stress states 三轴应力状态
different stress states 不同应力状态
multiaxial stress states 多维应力状态
Though both stress states of thinner and thicker tubes are biaxial tensile stress, considerable difference in the strain appears. Tensile strain in longitudinal direction occurs in thinner tube.
胀形过程中薄壁管、厚壁管和焊缝同为双拉应力状态。
参考来源 - 差厚拼焊管内高压成形规律研究·2,447,543篇论文数据,部分数据来源于NoteExpress
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