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帽型粘接结构的动态力学行为研究
Authors
吴先前
孟昶宇
+6 more
廖丽涓
杨喆
殷秋运
郭雅悰
魏延鹏
黄晨光
Publication date
13 August 2017
Publisher
Abstract
本研究针对帽型粘接结构在冲击载荷作用下的动态响应,基于改进的霍普金森杆实验平台,分析了界面应力状态、加载率及粘接层厚度等对结构承载能力及界面破坏模式的影响;同时发展了相应的数值计算方法,采用考虑混合破坏模式的率相关内聚力模型,获得了具有复杂应力状态界面的粘接结构强度极限曲线及其表达式,并讨论了加载率与强度表达式中控制参量间的关系。实验和数值计算结果有较好的一致性,结果表明:粘接结构的承载能力受控于界面应力状态与加载率的共同作用;随着粘接层厚度的增加,界面破坏模式的演化过程为内聚破坏→混合破坏→界面脱层破坏
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Institute Of Mechanics,Chinese Academy of Sciences
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Last time updated on 09/01/2019