IMPACT DAMAGE IN BRITTLE MATERIALS IN ELASTIC-PLASTIC RESPONSE REGIME
IMPACT DAMAGE IN BRITTLE MATERIALS IN ELASTIC-PLASTIC RESPONSE REGIME
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DOI：
10.1098/rspa.1978.0106
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发表时间：
1978-01-01
影响因子：
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通讯作者：
ROSENBLATT, M
中科院分区：
文献类型：
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作者：
EVANS, AG;GULDEN, ME;ROSENBLATT, M
在弹塑性响应过程中产生的冲击断裂具有表面延伸和穿透的特征。对这一区域内的一次典型撞击进行了数值动力学分析，以表明接触行为和应力场的一些主要特征。然后利用基于冲击动力学关键特征和基本断裂力学概念的简化假设对损伤进行了分析。这使得能够确定影响冲击断裂的主要材料和目标参数。然后，讨论了强度退化和侵蚀的一些含义。
The impact fracture created in the elastic-plastic response régime has been characterized in terms of its surface extension and penetration. A numerical dynamic analysis has been performed of a typical impact within this régime to indicate some of the principal characteristics of the contact behaviour and the stress field. The damage has then been analysed, by using simplified postulates based on key features of the impact dynamics and basic fracture mechanics concepts. This has enabled the primary material and target parameters affecting the impact fracture to be identified. Thereafter, some implications for strength degradation and erosion have been discussed.