摘要
翼型结构蒙皮通常可采用局部加厚设计以提高剖面惯性矩,从而获得较优的强度刚度性能。本文根据剖面惯性矩和面积的比值,提出比惯性矩概念,并对其计算公式与主要影响因素进行推导和分析;而后对比惯性矩的变化规律进行研究,给出了基于最大比惯性矩的蒙皮局部加厚优化方法,并将船舶常用舵蒙皮的最优加厚区间绘制成图谱;最后通过一算例阐述了该图谱的使用方法,并验证了该方法的有效性。
In order to improve cross-sectional inertia moment and obtain optimum strength and stiffness characteristics, airfoil structure is usually designed with local thickening skin. The area-inertia moment ratio is proposed as a concept, and the calculating formulas is derived as well as the main influencing factors is analyzed. Then, variety law of the area-inertia moment ratio is studied. Based on the principle of maximum moment of inertia, the optimization method for thickness of air-foil skin is proposed. The range of optimal thickened section is determined, and drawn into curves for common ship rudder profiles. Finally, a numerical example describes the use of the curves, and verifies the effectiveness of the method.
作者
刘令
李华东
梅志远
LIU Ling;LI Hua-dong;MEI Zhi-yuan(No.92942 Unit ofPLA,Beijing 100161,China;Department of Naval Architecture,Naval University of Engineering,Wuhan 430033,China)
出处
《舰船科学技术》
北大核心
2018年第8期33-36,132,共5页
Ship Science and Technology
基金
国家青年科学基金资助项目(51609252)
关键词
翼型结构
比惯性矩
局部加厚
优化设计
airfoil structure
area-inertia moment ratio
local thickening
optimal design
