Free vibration analysis of composite laminated beams with curvilinear fibers via refined theories
Free vibration analysis of composite laminated beams with curvilinear fibers via refined theories
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DOI：
10.1080/15376494.2020.1797959
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发表时间：
2020-07
影响因子：
2.8
通讯作者：
B. Daraei;S. Shojaee;S. Hamzehei-Javaran
中科院分区：
文献类型：
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作者：
B. Daraei;S. Shojaee;S. Hamzehei-Javaran
摘要对变刚度复合材料层合梁进行了自由振动有限元分析。用曲线纤维代替直纤维的层合板，得到了层合梁的变刚度。该分析基于Carrera统一公式（CUF）提出的高阶理论。等效单层（ESL）模型，这是独立的本构层的数量，已被用来考虑一些未知变量。数值分析的VSCL梁的结果和纤维的取向角和各种边界条件上的自然频率的效果进行了演示。
Abstract In this article, free vibration finite element analysis of variable stiffness composite laminate (VSCL) beams is carried out. The variable stiffness of laminated beams is acquired by using laminates with curvilinear fibers instead of straight fibers. The analysis is based on the higher-order theories that have been presented by Carrera Unified Formulation (CUF). Equivalent Single Layer (ESL) model, which is independent of the number of constitutive layers, has been utilized to consider a number of unknown variables. Several numerical results for the analysis of VSCL beams are presented and the effect of the fiber orientation angle and various boundary conditions on the natural frequencies are demonstrated.