全回转推进器螺旋桨桨叶结构强度评估方法（英文）

发布时间：2018-03-07 01:34

本文选题：全回转推进器　切入点：螺旋桨桨叶　出处：《船舶力学》2016年09期 　论文类型：期刊论文

【摘要】：为了解决全回转推进器螺旋桨的单向流固耦合问题,实现螺旋桨桨叶结构强度精确评估,文章基于计算流体力学和有限元法开展了螺旋桨桨叶的结构强度计算方法研究,重点探讨了桨叶表面随机分布压力从流体域到固体域的转换技术。在此基础上,文中提出了桨叶固液交界面上水动力载荷的转换方法,详细研究了插值加权系数和有限元网格尺寸对桨叶结构强度计算精度的影响规律,给出了适用于桨叶强度评估的插值加权系数和单元网格尺寸选取原则。最后,该文以5 000 k W级全回转推进器螺旋桨为例,开展了桨叶结构强度数值计算和安全评估,获得了桨叶的应力和变形分布规律,整体上建立了全回转推进器螺旋桨桨叶结构强度评估方法,可为大功率全回转推进器螺旋桨设计提供借鉴和参考。
[Abstract]:In order to solve the problem of unidirectional fluid-solid coupling of propeller with full rotary propeller and to accurately evaluate the structural strength of propeller blade, the structural strength calculation method of propeller blade is studied based on computational fluid dynamics and finite element method. The conversion technology of randomly distributed pressure on blade surface from fluid domain to solid domain is discussed in this paper. On the basis of this, a method for converting hydrodynamic load at the interface between solid and liquid of blade is presented in this paper. The influence of interpolation weighting coefficient and finite element mesh size on the calculation accuracy of blade structural strength is studied in detail. The interpolation weighting coefficient and the selection principle of element mesh size for blade strength evaluation are given. In this paper, taking 5 000 kW full rotary propeller as an example, the structural strength numerical calculation and safety evaluation of propeller blade are carried out, and the stress and deformation distribution of propeller blade is obtained. As a whole, a method for evaluating the structural strength of propeller blades of full rotary propeller is established, which can be used for reference and reference for the design of propeller of high power full rotary propeller.
【作者单位】：中国船舶科学研究中心;
【基金】：Supported by the Major State Basic Research Development Program of China(973 Program,No.2014CB046706) Jiangsu Key Laboratory of Green Ship Technology
【分类号】：U664.33

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