随着复合材料船舶建造尺寸越来越大，结构极限强度评估具有重要意义。本文基于后屈曲理论，通过渐进失效分析方法对复合材料夹层板架结构在组合载荷作用下的极限强度展开研究。首先通过与相关复合材料层合板试验及数值仿真结果进行对比，验证了本文渐进失效分析方法的准确性。然后，以复合材料夹层板架结构作为船舶上层建筑并考虑其受力特性，对具有初始缺陷且在轴向和侧向压力同时作用下的复杂受力状态的夹层板架结构进行计算，得到夹层板架结构的首层失效强度以及最终承载能力，并对失效位置做出预报。
With the increase of the sizes of composite ships, the assessment of the ultimate strength of ship hulls in composite materials is overwhelmingly significant. The ultimate strength of composite sandwich frame structures under combined loads is predicted by a progressive failure analysis based on post-buckling theory. Compared with the published results about composite laminated plates tested by the experiments and simulated by the finite element method, the accuracy of the progressive failure method in this paper is verified. Considering the mechanical properties of composite sandwich frame structures as the ship superstructure, the first ply failure strength and last ply failure strength are obtain when composite structures with initial imperfection are subjected to in-plane loads and transverse pressure together, then the failure location is also predicted.
2019,41(1): 14-19 收稿日期：2017-03-21
DOI：10.3404/j.issn.1672-7649.2019.01.003
分类号：U661.43
基金项目：国家自然科学基金青年基金资助项目（51109101，51509115）；江苏科技大学船海学院深蓝人才计划资助项目
作者简介：潘康华(1991-),男,硕士研究生,主要从事新型船体结构设计与强度计算研究
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