Kubiak Tomasz, Urbaniak Mariusz, Kazmierczyk Filip
Department of Strength of Materials, Faculty of Mechanical Engineering, Lodz University of Technology, 90-924 Lodz, Poland.
Materials (Basel). 2020 Jul 6;13(13):3002. doi: 10.3390/ma13133002.
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.
本文研究了具有开口截面的层合梁中层的堆叠顺序设计，以便在屈曲后范围内产生期望的性能。考虑了由玻璃纤维增强聚合物（GFRP）层合板制成的具有不同层排列（对称和非对称）的槽钢和卷边槽钢截面的层合梁。对于非对称堆叠顺序，考虑了湿热曲率稳定（HTCS）层合板。假定纯弯曲为载荷类型。对于具有开口截面的梁，这种载荷类型可能会导致侧向畸变屈曲模式。进行了参数研究，以分析层排列对屈曲后性能的影响。使用有限元方法开发数值模型并进行模拟。此外，还对槽钢截面梁进行了实验测试，以验证所开发的数值模型。
