复合材料船体加筋板结构的失效模式、失效机理及强度准则的实验和理论研究

项目名称： 复合材料船体加筋板结构的失效模式、失效机理及强度准则的实验和理论研究

项目编号： No.51479206

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 其他

项目作者： 王安稳

作者单位： 中国人民解放军海军工程大学

项目金额： 83万元

中文摘要： 高强度纤维加强的聚合物复合材料具有很高的比强度和比刚度,具有优良的电磁和声隐身性能以及可设计性,非常适合于建造反水雷舰艇和高速舰艇。如Eric Greene[4，5] 指出的，尽管船舶结构的设计原理和复合材料作为单个学科是成熟的，但是将其组合起来的方法还很不成熟。对较大型复合材料船体结构的失效模式、失效机理和强度准则有待于进行系统全面地研究。 本项目计划开展下列三类实验研究和系统理论计算分析：（1）复合材料帽形加筋板在面外载荷作用下失效模式和失效机理，（2）复合材料帽形加筋板在面内压缩载荷作用下的屈曲、后屈曲和最终破坏模式，（3）复合材料帽形加筋板构成的船体箱形梁模型在纵向弯曲载荷作用下的变形和失效模式。通过上述工作，初步对复合材料帽形加筋板构成的复合材料船体结构的局部失效模式和最后垮塌模式及其机理开展较系统的实验和理论研究，基于复合材料细观和宏观力学的理论，提出相应的强度计算准则。

中文关键词： 船体结构；复合材料；加筋板；失效模式；强度准则

英文摘要： Polymer composite materials reinforced with high-strength fiber provide very high strength-to-weight ratio and rigidity-to-weight ratio, and have stealth properties including low magnetic signatures and good noise -damping property. Therefore, the composite materials are very suitable for the construction of mine-hunting ships and high speed navy ships. But, as mentioned by Eric Greene[1，2], although design principles for ship structures and composite materials used for aerospace structures are mature as individual disciplines, procedures for combining the technologies are at an infancy.The systemic investigation is necessary for the failure modes, failure mechanism and corresponding strength criterions for large composite ship-hull structures The present project intends to perform the experimental and theoretical investigations of following three aspects: (1) Failure modes and failure mechanism of hat-stiffened composite panels under action of out-plane loads, (2) Buckling, post-buckling and ultimate collapse modes of hat-stiffened composite panels subjected to in-plane uniaxial compression, (3) Deformations, failure modes and ultimate collapse of box girder models constructed with hat-stiffened composite panels. By above-mentioned works, Systemic experimental and theoretical investigations will be performed for the local failures, ultimate collapse modes and mechanism of composite ship hull constructed with hat-stiffened composite panels, and the corresponding strength criterions will be presented based on composite micromechanics and macromechanics.

英文关键词： ship hull;composites;stiffened panel;failure modes;strength criterion