Analysis on Dynamic Response of Hard-Soft-Hard Sandwich Panel Under Blast Loading

Surface contact explosion experiments have been performed for the study of dynamic response of the hard-soft-hard sandwich panel under blast loading. Experimental results have shown that there are four damage modes, including explosion cratering, scabbing of the backside, radial cracking induced failure and circumferential cracking induced failure. It also illustrates that the foam material sandwiched in the multi-layered media has an important effect on damage patterns. The phenomena encountered have been analyzed by the calculation with ALE method. Meanwhile, the optimal analysis of foam material thickness and position in the sandwich panel were performed in terms of experimental and numerical analysis. The proper thickness proportion of the soft layer is about 2.0% to the thickness of sandwich panel and the thickness of the upper hard layer and lower hard layer is in the ratio of ？ to 3 under the condition in this paper when the total thickness of soft layer remains constant.     

自我的觉醒与迷失——从莎菲到上海宝贝

1928年丁玲小说《莎菲女士的日记》的发表引起了轰动,震惊了当时整个文坛,对小说主人公莎菲的评价历年来也众说纷纭、莫衷一是。而1999年卫慧长篇小说《上海宝贝》的出版也同样对整个文坛产生冲击,掀起了一场有关“美女作家”、“身体写作”的讨论,影响至今仍绵延不绝。历史往往有着惊人的相似性。由于这两部小说均出自女作家之手且小说主人公都是女性,有论者就将二者都列入女性文学范畴进行讨论。这里就存在一个对于女性文学认识上的误区。本文试图借助女性主义视角解读文本,从写作手法、女性主体意识及写作背景等方面对小说进行分析比较,从而指出前者是一部优秀的女性文学之作,而后者是一部女性文学的伪文本。