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EXPERIMENTAL INVESTIGATION ON THE DYNAMIC RESPONSE AND FAILURE OF THREE-SPAN CONTINUOUS PIPE-BEAM

机译:三跨连续管梁动力响应和失效的实验研究

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In this article three-span continuous pipe beams were impacted laterally at the mid-span by a rigid indenter. The specimens in the test were seamless steel pipes of two different sizes. One had an outside diameter (D) of 45mm with a wall thickness (H) of 3mm and the other had D=44mm and H=1mm. Three kinds of indenter nose shapes were used: blunt-nose, hemisphere-nose and 90° conical-nose. The water was used to achieve the internal pressure that ranged up to 20Mpa. The perforation failure modes and corresponding critical impact energies were obtained under different test conditions. The time-history curves of internal pressure and impact force were given.
机译:在本文中,三跨度连续管梁由刚性压头横向撞击。试验中的标本是两种不同尺寸的无缝钢管。一个具有45mm的外径(d),壁厚(h)为3mm,另一个具有d = 44mm,h = 1mm。使用了三种压头形状:钝鼻,半球 - 鼻子和90°圆锥形鼻子。水用于达到高达20MPa的内部压力。在不同的测试条件下获得穿孔失效模式和相应的临界冲击能。给出了内部压力和冲击力的时间历史曲线。

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