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Elastic tripping analysis of angle bars and permanent means of access structures

机译：角钢的弹性跳闸分析和永久性通道结构

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摘要

Energy method is used for tripping analysis of asymmetric stiffeners in stiffened plates. The shape of normalized warping function of stiffener is proposed as a strain distribution for sideways bending and classical plate theory is used for out-of-plane deflection. Strain distribution and elastic tripping stress of different angle bars and permanent means of access structures are calculated and compared with finite element method. It is found that for slender angle bars rigid web or flange assumption for out-of-plane deflection is justified. For angle bars proposed strain distribution based on normalized warping function and previously suggested strain distribution based on bending theory are exactly the same. However, for permanent means of access structures, the proposed strain distribution has better agreement than previously suggested strain distribution. For angle bars and permanent means of access structures with high ratio of web height to length, some discrepancy arises between proposed strain distribution and finite element method due to shear deformation.
机译：能量法用于加劲板中不对称加劲肋的跳闸分析。提出了加劲肋归一化翘曲函数的形状，作为侧向弯曲的应变分布，经典板理论用于平面外挠度。计算了不同角钢和永久性通道结构的应变分布和弹跳应力，并与有限元法进行了比较。已经发现，对于细长的角钢，假定刚性腹板或凸缘的平面外偏转是合理的。对于角钢，基于规范化翘曲函数的应变分布与基于弯曲理论的应变分布完全相同。但是，对于永久性通道结构，建议的应变分布比以前建议的应变分布具有更好的一致性。对于腹板高度与长度之比高的角钢和永久性通道结构，由于剪切变形，建议的应变分布与有限元方法之间会出现一些差异。

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