Hypervelocity impact damage prediction in composites: Part II - experimental investigations and simulations
Hypervelocity impact damage prediction in composites: Part II - experimental investigations and simulations
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DOI：
10.1016/j.ijimpeng.2006.09.052
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发表时间：
2006-12-01
影响因子：
5.1
通讯作者：
Clegg, R. A.
中科院分区：
文献类型：
--
作者：
Riedel, W.;Nahme, H.;Clegg, R. A.
复合材料在空间碎片超高速撞击过程中的损伤扩展受损伤阈值和损伤扩展过程中的能量消耗控制。部分和完全损坏状态下的材料的表征和建模对于预测HVI对纤维复合材料结构的影响至关重要。改进的实验和数值分析技术已经开发出来，并在随附的文件中进行了总结。本文件涉及在高真空度条件下建立两个精确的损伤实验，作为数值模拟的验证基础：第一类实验包括为损伤评估而优化的空间碎片撞击构型，第二类实验再现高真空度应变率和平板撞击中的压缩。耦合的损伤分析技术（视觉，超声波，剩余强度），以量化不同方面的失败已经实现。数值模拟使用商业流体代码AUTODYN在网格为基础的和SPH配方使用的材料模型和数据中所描述的随附文件。(C)2006爱思唯尔有限公司保留所有权利。
The extension of damage in composites during hypervelocity impact (HVI) of space debris is controlled by failure thresholds and subsequent energy consumption during damage growth. Characterisation and modelling of the material under partially and fully damaged states is essential for the prediction of HVI effects on fibre-composite structures. Improved experimental and numerical analysis techniques have been developed and are summarised in an accompanying paper. The present paper deals with the establishment of two precise damage experiments under HVI conditions as a validation basis for numerical simulations: The first type consists of space debris impact configurations optimised for damage evaluation and the second experiments reproduce HVI strain rates and compressions in plate impact. Coupling of damage analysis techniques (visual, ultrasonic, residual strength) to quantify different aspects of failure has been achieved. Numerical simulations using the commercial hydrocode AUTODYN in mesh-based and SPH formulations are presented using the material model and data described in the accompanying paper. (C) 2006 Elsevier Ltd. All rights reserved.