Experimental investigation on buckling and free vibration behavior of woven natural fiber fabric composite under axial compression

被引：61
|
作者：
Rajesh, M. [1 ]
Pitchaimani, Jeyaraj [2 ]
机构：
[1] VIT Univ, Sch Mech Engn, Vellore Campus, Vellore 632014, Tamil Nadu, India
[2] Natl Inst Technol Karnataka Surathkal, Dept Mech Engn, Mangalore 575025, India
来源：
COMPOSITE STRUCTURES | 2017年 / 163卷
关键词：
Fabrics/textiles; Vibration; Compression moulding; Weaving; Buckling; SANDWICH BEAMS; COLUMNS;
D O I：
10.1016/j.compstruct.2016.12.046
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Influence of axial compression load on buckling and free vibration characteristics of natural fiber fabric polymer composite beam is analyzed experimentally. Critical buckling strength, free vibration frequencies and modal loss factors are obtained and analyzed. It is found that buckling strength increases with number of layers of fabric in composite. It is also observed that weaving pattern of the fabric influences buckling strength of the composite and basket type woven fabric enhances the buckling strength compared to plain and herringbone woven fabric composites. Sandwich composites with glass fiber fabric facing layer and natural fiber fabric as core layer having higher buckling strength. Free vibration frequency reduces with increase in axial compression load while modal damping factor increases in the pre-buckling region. However, this behavior reverses in the post-buckling region. The load-deflection obtained experimentally is compared with finite element result obtained considering the geometric non-linearity. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：302 / 311
页数：10
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