Experimental and Numerical analysis of tubular composite energy absorber subjected to quasi static axial compression

سال انتشار: 1399
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 138

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شناسه ملی سند علمی:

ICME17_075

تاریخ نمایه سازی: 6 مهر 1400

چکیده مقاله:

This research aims to study the crashworthiness characteristics of tubular glass fiber composite energy absorbers under quasi static axial compression. Tubes were fabricated through a modified hand lay-up method. Five types of different stacking sequences containing six layers were fabricated including full unidirectional ([۹۰۲/۰۲/۹۰۲]), full coarse woven (CW), full fine woven (FW), three inner coarse woven layers and three outer circumferential UD layers ([CW۳/۹۰۳]), three inner coarse woven layers and three outer circumferential UD layers ([FW۳/۹۰۳]). Force- displacement and absorbed energy and induced damage mechanisms of experiments were investigated. transversal and longitudinal fiber breakage, interlaminar and intralaminar delamination were the major failure mechanisms. Comparing the FEM outputs versus experimentation, good correlations were achieved, thereby parametric study was employed to investigate the other potential stacking sequences including [FW۲/۹۰۴] and [FW۴/۹۰۲]. Results revealed that an equal number of layers of woven and unidirectional fibers owns the optimal crashworthiness metrics and desirable failure mechanisms.

نویسندگان

a.r Tarafdar

MSc, Department of mechanical engineering, Tarbiat Modares University, Tehran, Iran

G.H liaghat

Professor, Department of mechanical engineering, Tarbiat Modares University, Tehran, Iran

h ahmadi

Assistant professor, Department of mechanical engineering, Tarbiat Modares University, Tehran, Iran

e pedram

MSc, Department of mechanical engineering, Islamic Azad University, Takestan, Qazvin, Iran

m Rezaei Faraz

MSc, Department of mechanical engineering, Tarbiat Modares University, Tehran, Iran