The influence of stiffeners on axial crushing of glass-fabric-reinforced epoxy composite shells

Journal of King Saud University: Engineering Sciences

K.M. Kabilash¹  P. Nagaraj²  A. Vasanthanathan²  M. Sriram³ 

[1] BHEL BAP, Ranipet, India;Department of Mechanical Engineering, MEPCO SCHLENK Engineering College, Sivakasi, India;WABCO INDIA LIMITED, Ambattur Industrial Estate, Chennai, India;

关键词: Glass fabric;    Thin-walled shell;    Hand lay-up;    Stiffeners;    Impact;    Finite element analysis;   

DOI  :  10.1016/j.jksues.2014.08.001

来源: DOAJ

【 摘 要 】

A generic static and impact experimental procedure has been developed in this work aimed at improving the stability of glass fabric reinforced epoxy shell structures by bonding with axial stiffeners. Crashworthy structures fabricated from composite laminate with stiffeners would offer energy absorption superior to metallic structures under compressive loading situations. An experimental material characterisation of the glass fabric reinforced epoxy composite under uni-axial tension has been carried out in this study. This work provides a numerical simulation procedure to describe the static and dynamic response of unstiffened glass fabric reinforced epoxy composite shell (without stiffeners) and stiffened glass fabric reinforced epoxy composite shell (with axial stiffeners) under static and impact loading using the Finite Element Method. The finite element calculation for the present study was made with ANSYS®-LS-DYNA® software. Based upon the experimental and numerical investigations, it has been asserted that glass fabric reinforced epoxy shells stiffened with GFRP stiffeners are better than unstiffened glass fabric reinforced epoxy shell and glass fabric reinforced epoxy shell stiffened with aluminium stiffeners. The failure surfaces of the glass fabric reinforced epoxy composite shell structures tested under impact were examined by SEM.

【 授权许可】

Unknown