（毕业设计论文）《SPS聚氨酯复合钢板加肋结构的屈曲实验与模拟》.doc

哈尔滨工程大学本科生毕业论文 SPS聚氨酯复合钢板加肋复合结构的屈曲实验与模拟 院(系)名称：航天与建筑工程学院 专业名称：工程力学 学生姓名： 指导教师： 讲师 2012年6月  SPS SPS聚氨酯复合钢板加肋复合结构的屈曲实验与模拟 哈 尔 滨 工 程 大 学 摘 要 SPS聚氨酯加肋夹层板作为一种新型复合材料，在航空航天以及船舶，建筑等方面都具有很大潜能，并且越来越受到国内外有关研究人员的关注。本文通过以下几个方面对SPS聚氨酯加肋夹层板做了研究。 (1) 设计聚氨酯加肋夹层板的屈曲实验所用夹具。研究了聚氨酯弹性体的制备方法和聚氨酯加肋夹层板的制作工艺。 (2) 通过ansys模拟了加肋夹层板的屈曲，通过4组模型模拟来研究了屈曲模态、试件长宽比对极限屈曲强度的影响，以及普通加肋板和夹层加肋板屈曲极限屈曲强度的对比。并对横、纵向加劲数对屈曲强度的影响做了研究。 (3) 分别进行普通加肋钢板和聚氨酯加肋夹层板的屈曲实验，通过实验研究，对普通加肋钢板和聚氨酯加肋夹层钢板的屈曲形式和承载能力进行了对比，结果表明聚氨酯弹性体的填入能够提高结构的屈曲强度。 关键词：加肋夹层板；聚氨酯弹性体；极限强度；屈曲；制作工艺 ABSTRACT As a new kind of composite material, polyurethane stiffened sandwich plate shows great potential advantages in aerospace, shipbuilding and construction industry. It causes more and more concern of the researchers inland and abroad. In this paper, we study the SPS polyurethane stiffened sandwich plate from the following aspects: (1) The buckling experiments of polyurethane stiffened sandwich plate and the fixture were designed. also the preparation of polyurethane elastomer and production process of polyurethane stiffened sandwich plate are studied. (2) Using FEM software ANSYS, buckling analysis for four sets models of stiffened sandwich plates are carried out to study the influence of buckling mode and specimen aspect ratio on the buckling strength. And comparison are also carried out between ordinary stiffened panels and stiffened by ribs. then influences of different number of horizontal and vertical stiffeners on the buckling strength are discussed. (3) Comparison between the ordinary stiffened plates and stiffened plates filled with polyurethane elastomer are carried out by buckling experiments, and the results shows plates filled with polyurethane elastomer can raise the buckling strength. . Keywords: Stiffened sandwich plate; HYPERLINK app:ds:polyurethane \t Polyurethane elastomer; Ultimate strength; Buckling; Workmanship 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc327431880 第1章 绪论