船舶与海洋工程
船舶與海洋工程
선박여해양공정
Shanghai Shipbuilding
2014年
4期
12-19
,共8页
侧向承载板的极限强度%长宽比系数%刚塑性理论%弹塑性理论%船体结构规范
側嚮承載闆的極限彊度%長寬比繫數%剛塑性理論%彈塑性理論%船體結構規範
측향승재판적겁한강도%장관비계수%강소성이론%탄소성이론%선체결구규범
lateral load plate ultimate strength%length-breadth ratio coefficient%rigid-plastic theory%elastic-plastic theory%hull structure regulation
液体的压强作用一直是船体外板、液舱舱壁等位置板厚设计的主要考虑因素之一，且可归结为局部板格在侧向载荷作用下不屈服的安全衡准问题。结合理论分析及非线性有限元数值计算，对于受侧向载荷作用的局部板格极限强度的影响，探讨了包括边界条件、大挠度问题及相应的薄膜效应等各种影响因素，论证了一种优化的受侧向载荷作用的船体板厚约束设计公式，该公式经济适用且安全。整个探讨过程为船体结构规范的进一步完善提出了建议。
液體的壓彊作用一直是船體外闆、液艙艙壁等位置闆厚設計的主要攷慮因素之一，且可歸結為跼部闆格在側嚮載荷作用下不屈服的安全衡準問題。結閤理論分析及非線性有限元數值計算，對于受側嚮載荷作用的跼部闆格極限彊度的影響，探討瞭包括邊界條件、大撓度問題及相應的薄膜效應等各種影響因素，論證瞭一種優化的受側嚮載荷作用的船體闆厚約束設計公式，該公式經濟適用且安全。整箇探討過程為船體結構規範的進一步完善提齣瞭建議。
액체적압강작용일직시선체외판、액창창벽등위치판후설계적주요고필인소지일，차가귀결위국부판격재측향재하작용하불굴복적안전형준문제。결합이론분석급비선성유한원수치계산，대우수측향재하작용적국부판격겁한강도적영향，탐토료포괄변계조건、대뇨도문제급상응적박막효응등각충영향인소，론증료일충우화적수측향재하작용적선체판후약속설계공식，해공식경제괄용차안전。정개탐토과정위선체결구규범적진일보완선제출료건의。
The liquid pressure effect has always been one of the main considerations for the thickness design of shell plates, tank bulkheads and so on, which may boils down to a safety criterion issue that the local panel should not yield under the lateral load. This paper studies the influence of boundary conditions, big deflection problem and membrane effect on the ultimate strength of local panels under lateral loads, based on theoretical analysis and nonlinear FEM numerical calculations;and proposes a thickness constrained design formula for hull plates under lateral loads, which is economical, applicable and safe. The whole analysis process offers some suggestion for the further improvement of hull structure regulations.
