空中爆炸载荷下含泡沫填充物杂交夹层结构失效机理研究

项目名称： 空中爆炸载荷下含泡沫填充物杂交夹层结构失效机理研究

项目编号： No.51509096

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 其他

项目作者： 张攀

作者单位： 华中科技大学

项目金额： 22万元

中文摘要： 含泡沫填充物杂交夹层结构作为一种可能应用于舰船工程的新型结构形式，其力学性能与传统加筋板结构以及夹层结构（不含填充物）都存在较大差异性，其在空中爆炸载荷下的动态响应和失效机理是需要解决的关键科学问题。项目通过建立空中爆炸产物与结构耦合作用的理论分析模型和精细数值模型，分析含泡沫填充物杂交夹层结构空中爆炸载荷特性；基于细观层面的耦合动力学分析和宏观层面的塑性动力响应理论分析，研究空中爆炸载荷下含泡沫填充物杂交夹层结构塑性动力响应及失效机理；通过开展空中爆炸试验全面系统地获得含泡沫填充物杂交夹层结构失效具体特征，验证并修正建立的理论分析模型和数值模型。本项研究将获得空中爆炸载荷下含泡沫填充物杂交夹层结构的非线性动态响应特性及失效机理，为杂交夹层结构在舰船结构设计中的应用提供理论依据和技术支持。

中文关键词： 杂交夹层结构；空中爆炸载荷；失效机理；动态响应；泡沫填充

英文摘要： Foam-filled hybrid sandwich structures are new type of potential structures to be applied in naval vessels. It should be noted that many mechanical properties of foam-filled hybrid sandwich structures are quite different from those of traditional stiffened plate structures and sandwich structures (without fillers). Researches on the nonlinear mechanical behavior and failure mechanisms of foam-filled hybrid sandwich structures subjected to air blast loading are key scientific problems to be solved. The main contents of this research contain: 1) research on theoretical model and numerical model to deal with interaction between explosion product and the face sheet towards the blast, and using the models to analyze the property of air blast loads imposing on foam-filled hybrid sandwich structures. 2) research on coupling dynamics at mesoscopic level and theoretical analysis model of plastic deformation at macroscopy level, and investigation on nonlinear mechanical behavior and failure mechanism of foam-filled hybrid sandwich structures under air blast loading. 3) the experimental studies on air blast loading and nonlinear mechanical behavior of foam-filled hybrid sandwich structures. The study will reveal the features of nonlinear mechanical behavior and failure mechanism of subjected to air blast loading. The proposed study certainly has important theoretical and academic values, and provides the theoretical foundation and technical support for their application in ship-building industry.

英文关键词： hybrid sandwich structure;air blast loading;failure mechanism;dynamic response;foam filling