In this paper, a new simple analytical model for perforation process of composite sandwich panels subjected to high-velocity impact of flat-ended projectile is presented. The panels consist of foam core sandwiched between two composite skins. In the analytical model, global deformation, plug shearing or localized tensile fracture, delamination of front and back-up composite skins, and the absorbed energy during the perforation of the sandwich panel are calculated considering the local indentation and also the energy balancing equation is employed to determine the ballistic limit and residual velocity of projectile. The results of current new model are compared with the experimental results available in the open literature and the fnite element simulation results obtained by the LS-Dyna code. A good agreement is observed between the analytical and numerical model results and the experimental results.
کلید واژگان :Fibers · Foam · Impact behavior · Analytical modeling · Numerical analysis
ارزش ریالی : 600000 ریال
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جزئیات مقاله
- کد شناسه : 1151380033149090
- سال انتشار : 2017
- نوع مقاله : پذیرفته شده در مجلات Scopus ,ISI با 4>IF>
- زبان : انگلیسی
- محل پذیرش : Journal of the Brazilian Society of Mechanical Sciences and Engineering
- IF مجله : 1.8
- ISSN :
- تاریخ ثبت : 1396/09/29 23:35:31
- ثبت کننده : سید سجاد جعفری
- تعداد بازدید : 176
- تعداد فروش : 0