船体结构庞大而复杂，船体总纵强度的模型试验十分困难，因此船体梁模型的简化方法对船体结构的总纵强度研究具有重要意义。本文针对船体梁失效模式，提出船体梁模型的简化方法。根据该简化方法建立中垂及中拱工况下船中舱段的简化模型，比较完整模型与简化模型的极限弯矩，验证该简化方法对于分析船体梁极限弯矩的可行性，为船体梁极限强度和剩余强度的研究提供参考。
The model test of hull longitudinal strength is very difficult because of huge and complex hull structure. Therefore, simplified method of hull girder model is of great significance to the study of hull longitudinal strength. Aiming at the failure mode of hull girder, a simplified method of hull girder model is proposed in this paper. According to the simplified method, a simplified model of mid-hull section under hogging and sagging condition is established. The ultimate bending moment of the complete and simplified model is compared to verify the feasibility of this method for analyzing the ultimate bending moment of hull girder. The method provides a reference for the research of ultimate strength and residual strength.
2020,42(10): 1-5 收稿日期：2019-09-20
DOI：10.3404/j.issn.1672-7649.2020.10.001
分类号：U663.2
基金项目：山东省自然科学基金资助项目(ZR2017BEE024)；国家自然科学联合基金重点项目(U1706223)；山东省重大科技专项资助项目(2017CXGC0106)；山东省自然科学基金重大基础研究项目(ZR2017ZA0202)
作者简介：冯亮(1983-)，男，博士，讲师，研究方向为船舶与海洋工程结构深度评估
参考文献：
[1] IACS Common Structural Rules for Bulk Carriers[S], July 2009.
[2] 吴卫国, 邓卉, 甘进. 船体结构极限强度模型试验技术研究[C]. 纪念《船舶力学》创刊二十周年学术会议论文集, 2017.
[3] 李政杰, 赵南, 祁恩荣, 等. 典型箱型梁极限强度模型试验分析[J]. 船海工程, 2018, 47(3): 32-35
[4] 任慧龙, 郎舒妍, 任晨辉, 等. 带有初始缺陷的船体结构极限强度研究[J]. 舰船科学技术, 2015, 37(12): 38-41
[5] 伍友军, 万琪, 周博. 船体极限强度非线性有限元计算方法[J]. 船舶与海洋工程, 2017, 33(6): 20-25.48
[6] 万乐天, 吴益辉, 李建强. 基于ABAQUS的船体箱型梁极限强度分析[J]. 水雷战与舰船防护, 2017, 24(4): 62-66
[7] GORDO J. M., GUEDES SOARES C. Experimental analysis of the effect of frame spacing variation on the ultimate bending moment of box girders[J]. Marine Structure, 2014, 37: 111-134
[8] MING Cai Xua, ZHAO Jun Songa, JIN Pa. Study on influence of nonlinear finite element method models on ultimate bending moment for hull girder[J]. Thin-Walled Structures, 2017, 119: 282-295
[9] JEOM Kee Paik, BONG Ju Kim, JUNG Kwan Seo. Methods for ultimate limit state assessment of ships and ship-shaped offshore structures: Part II stiffened panels[J]. Ocean Engineering, 2008, 35: 271-280
[10] 冯亮, 董胜, 王保森, 等. 箱型梁极限弯矩简化计算方法[J]. 哈尔滨工程大学学报, 2017, 38(3): 1-5
[11] JEOM Kee Paik, JUNG Kwan Seo. Nonlinear finite element method models for ultimate strength analysis of steel stiffened-plate structures under combined biaxial compression and lateral pressure actions—Part II: Stiffened panels[J]. Thin-Walled Structures, 2009, 47: 998-1007
[12] Shengming ZHANG, Imtaz KHAN. Buckling and ultimate capability of plates and stiffened panels in axial compression[J]. Marine Structures, 2009, 22: 791-808
[13] KIMA D. K., LIM H. L., KIMB M. S., et al. An empirical formulation for predicting the ultimate strength of stiffened panels subjected to longitudinal compression[J]. Ocean Engineering, 2017, 140: 270-280
[14] 雒高龙, 张淑茳, 任慧龙. 船用钢应力-应变关系的数学表达及其在计算加筋板屈曲应力中的应用[J]. 造船技术, 2006, 3: 13-18.42
[15] 王保森, 董胜, 冯亮, 等. 加筋板极限强度数值计算影响因素及敏感分析[J]. 中国海洋大学学报, 2018, 48(2): 105-112
