Static and dynamic analysis of bending-torsion coupling of a CFRP sandwich beam

被引：12
作者：
Bernard, Loic [1 ]
Michon, Guilhem [1 ]
El Fatmi, Rached [2 ]
Castanie, Bruno [1 ]
机构：
[1] Univ Toulouse, Mines Albi, ICA, INSA,ISAE,UPS, 3 Rue Caroline Aigle, F-31400 Toulouse, France
[2] ENI Tunis, BP 37, Tunis 1002, Tunisia
来源：
COMPOSITE STRUCTURES | 2016年 / 145卷
关键词：
Sandwich structures; Vibration; Bending/torsion coupling; HELICOPTER ROTOR; COMPOSITE ROTOR; AEROELASTIC OPTIMIZATION; GRADED CORE; BLADES; VIBRATION; STABILITY; STRESSES; GEOMETRY; FLIGHT;
D O I：
10.1016/j.compstruct.2016.02.055
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The bending-torsion coupling for a sandwich beam is analysed from the static and vibrational point of view. Off-axis orientations in the skin and transverse graded core are proposed to perform the coupling. Solutions are first compared numerically from a static point of view using a complete beam theory. The natural frequencies and mode shapes are then studied experimentally and numerically. An experimental assembly test rig is presented, where a sandwich beam is embedded on the shaker and measurements are taken with a scanning vibrometer. These results are then compared to those calculated by a finite element model in order to verify the accuracy of the model and its ability to consider all the physical phenomena involved. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：26 / 36
页数：11
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