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The Influence of the Layer Arrangement on the Distortional Post-Buckling Behavior of Open Section Beams

机译：层布置对开截面梁扭曲后屈曲行为的影响

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The paper deals with the design of the stacking sequence of layers in the laminate beams with open-cross sections in order to create the desired behavior in the post-buckling range. Laminate beams with channel and lipped channel cross-sections made of glass fiber reinforced polymer (GFRP) laminate with different layer arrangements (symmetrical and nonsymmetrical) have been considered. In case of the nonsymmetrical stacking sequences, hygro-thermally curvature stable (HTCS) laminates have been taken into account. Pure bending was assumed as the type of load. In the case of beams with open cross-sections, this load type can cause the lateral-distortional buckling mode. A parametric study was performed to analyze the influence of layer arrangement on post-buckling behavior. The finite element method was used to developed numerical models and conduct simulations. Additionally, the experimental tests of the channel section beams were performed in order to validate the developed numerical models.
机译：本文涉及具有开口截面的层压梁中层叠层的堆叠序列的设计，以便在后屈曲范围内产生所需的行为。已经考虑了具有玻璃纤维增​​强聚合物（GFRP）层压板的通道和锁定沟道横截面的层压梁，已经考虑了具有不同层布置（对称和非对称）。在非对称堆叠序列的情况下，已经考虑了Hygro-热曲率稳定（HTCS）层压材料。假设纯弯曲作为负载类型。在具有开放横截面的梁的情况下，该负载类型会导致横向扭曲屈曲模式。进行参数研究以分析层排列对屈曲行为的影响。有限元方法用于开发数值模型并进行仿真。另外，执行通道部分光束的实验测试以验证开发的数字模型。

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