Modeling the perforation failure of honeycomb sandwich structures through numerical homogenization

Uzair Ahmed Dar, Zhang Weihong, Xu Yingjie

科研成果: 书/报告/会议事项章节会议稿件同行评审

2 引用 (Scopus)

摘要

In this study, the perforation failure of honeycomb sandwich structures is numerically simulated by using homogenized equivalent model. The high velocity impact behavior of aluminum honeycomb core with reinforced carbon/epoxy face sheets is modeled by using commercial finite element (FE) analysis code AUTODYN-3D. It is observed that the detailed three dimensional FE modeling of honeycomb core is complex, time consuming and computationally expensive. A simplified hexagonal honeycomb equivalent numerical model with relatively less computational time and acceptable degree of accuracy is proposed in this paper. The equivalent numerical model is based on P-alpha (Pα) equation of state for porous materials. In this model, it is assumed that honeycomb core is isotropic homogeneous porous medium in which all the pores are uniformly distributed. For the purpose of validation, the simulation results of detailed and equivalent honeycomb numerical models are compared with available experimental results in terms of ballistic limit, energy absorption, residual velocity and contact time. The results show that the equivalent honeycomb model closely predicts the perforation behavior for various impact velocities and takes considerably less computational time than detailed honeycomb model.

源语言英语
主期刊名Proceedings of 2013 10th International Bhurban Conference on Applied Sciences and Technology, IBCAST 2013
19-24
页数6
DOI
出版状态已出版 - 2013
活动2013 10th International Bhurban Conference on Applied Sciences and Technology, IBCAST 2013 - Islamabad, 巴基斯坦
期限: 15 1月 201319 1月 2013

出版系列

姓名Proceedings of 2013 10th International Bhurban Conference on Applied Sciences and Technology, IBCAST 2013

会议

会议2013 10th International Bhurban Conference on Applied Sciences and Technology, IBCAST 2013
国家/地区巴基斯坦
Islamabad
时期15/01/1319/01/13

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