摘要
针对芯层为分层多孔泡沫的抗冲覆盖层在水下非接触爆炸冲击波作用时的响应进行了理论分析。对比了分层覆盖层与均匀覆盖层的冲击防护效果。结果表明:在同样的入射冲击波作用下,分层多孔覆盖层能有效降低覆盖层的厚度,抵抗更强的冲击波;但是,分层多孔覆盖层传递到被保护结构的应力要大于均匀覆盖层。该研究结果能为梯度覆盖层的设计提供参考。
The transient response of the stepwise graded cellular cladding to noncontact underwater explosion shock wave is analyzed. The shock resistance ability of the stepwise graded cellular cladding is compared with that of the equivalent uniform cellular cladding. The results indicate that under the same incident shock wave, only smaller thickness is needed for the stepwise graded cellular cladding than that for the equivalent uniform cladding. In other words, the graded cladding performs better than the equivalent uniform cladding in shock energy absorbing. However, the stress transmitted to the protected structure is larger for the graded cladding than that for the uniform cladding. The research results can guide the design of graded cellular cladding subjected to underwater blast.
作者
陈斌
殷彩玉
CHEN Bin;YIN Cai-yu(Naval Military Representative Office in Hudong Zhonghua Shipyard (Group) Co. Ltd.,Shanghai 200129, China;State Key Laboratory of Mechanical System and Vibration, Shanghai Jiaotong University,Shanghai 200240, China)
出处
《噪声与振动控制》
CSCD
2016年第6期67-71,共5页
Noise and Vibration Control
关键词
振动与波
梯度多孔材料
水下爆炸
流固耦合
空化
vibration and wave
stepwise graded cellular material
underwater explosion
fluid- structure interaction
cavitation