水下爆炸载荷作用下加肋圆柱壳应变响应研究Experimental Study on Stiffened Cylindrical Shell Response to Underwater Explosion Loading
沈晓乐,宋敬利,李琛
摘要(Abstract):
采用加肋圆柱壳结构模型模拟潜艇结构,对其在水下爆炸冲击载荷作用下的响应过程进行试验研究。结果表明:采用应变测量的方法对结构进行模态分析是可行的;受附连水质量的影响,加肋圆柱壳结构的低阶湿模态频率较干模态频率显著下降;在爆炸载荷作用下,距离爆炸点越近结构承受的冲击作用越严重,越容易产生塑性破坏;应变的最大响应是冲击波载荷和一次脉动压力载荷共同作用的结果,第二次脉动压力对结构的动态应变响应贡献不明显。
关键词(KeyWords): 水下爆炸;应变响应;加肋圆柱壳
基金项目(Foundation):
作者(Author): 沈晓乐,宋敬利,李琛
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