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 airfoil 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.
2018,40(8): 33-36,132 收稿日期：2017-01-11
DOI：10.3404/j.issn.1672-7649.2018.08.006
分类号：U663
基金项目：国家青年科学基金资助项目（51609252）
作者简介：刘令(1986-),男,博士,工程师,研究方向为船用复合材料及其应用
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