屈曲模态内力对复合材料中长梁弯曲承载能力的影响

The Influence of the Internal Forces of the Buckling Modes on the Load-Carrying Capacity of Composite Medium-Length Beams under Bending.

作者信息

Zaczynska Monika, Kolakowski Zbigniew

机构信息

Department of Strength of Materials, Faculty of Mechanical Engineering, Lodz University of Technology, 90-924 Lodz, Poland.

出版信息

Materials (Basel). 2020 Jan 17;13(2):455. doi: 10.3390/ma13020455.

DOI:10.3390/ma13020455

PMID:31963597

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7014264/

Abstract

The distribution of the internal forces corresponding to the individual buckling modes of lip-channel (LC) beams is investigated using the Semi Analytical Method (SAM) and the Finite Element Method (FEM). Channel section beams made of 8-layered GFRP (Glass Fiber Reinforced Polymer) laminate with three different layer arrangements were considered. The effect of the internal forces on the non-linear first-order coefficients corresponding to the interactive buckling was also studied. Moreover, distributions of the internal forces corresponded to the loading, leading to structure failure for which the load-carrying capacity was determined. The results indicated a high influence of the internal force component on the buckling loads and load-carrying capacity of the LC-beams.

摘要

采用半解析法（SAM）和有限元法（FEM）研究了唇形槽钢（LC）梁各屈曲模态对应的内力分布。考虑了由8层玻璃纤维增强聚合物（GFRP）层压板制成的具有三种不同层排列的槽钢截面梁。还研究了内力对与相互作用屈曲对应的非线性一阶系数的影响。此外，内力分布对应于导致结构失效的荷载，据此确定了承载能力。结果表明，内力分量对LC梁的屈曲荷载和承载能力有很大影响。