复合材料水翼水动力与结构强度特性数值研究

陈倩; 张汉哲; 吴钦; 傅晓英; 张晶; 王国玉

doi:10.6052/0459-1879-19-107

复合材料水翼水动力与结构强度特性数值研究

doi: 10.6052/0459-1879-19-107

陈倩^*,,
张汉哲^*,
吴钦^*2),,
傅晓英^†,
张晶^*,
王国玉^*

* 北京理工大学,北京 100081
? 四川大学,成都 610000

基金项目: 1)国家自然科学基金(51839001);国家自然科学基金(91752105);四川大学水力学与山区河流开发保护国家重点实验室开放基金资助项目

详细信息

通讯作者:
吴钦

中图分类号: TK72
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出版历程
- 收稿日期: 2019-04-26
- 刊出日期: 2019-09-18

THE NUMERICAL INVESTIFATION ON HYDRODYNAMIC AND STRUCTURAL STRENGTH OF A COMPOSITE HYDROFOIL

* Beijing Institute of Technology,Beijing 100081,China
? Sichuan University,Chengdu 610000,China

摘要

摘要: 针对复合材料水翼存在的流固耦合求解问题,结合其自身特有属性,对复合材料水翼结构变形特性进行了数值仿真计算研究.研究建立了复合材料水翼流固耦合数值计算模型,并将数值计算结果与Zarruk等的实验结果进行对比,验证模型的正确性,得出复合材料水翼尖端扭转角随雷诺数的增加而增加的研究结论.基于数值计算模型,系统地研究了不同铺层角对复合材料水翼水动力特性及强度特性的影响,结果表明：不同铺层角复合材料水翼的尖端扭转角,随铺层角的增大而减小,而其尖端位移量随铺层角的增大先减小后增大.为了削弱工程常数的影响对复合材料水翼变形的影响,研究提出了无量纲扭转角和无量纲位移量,进一步探究复合材料水翼结构的弯扭耦合作用对其变形特性的影响.最后利用蔡$\!$-$\!$-$\!$吴失效准则进行复合材料水翼强度特性的判断和分析,结果表明：不同铺层角复合材料水翼的蔡$\!$-$\!$-$\!$吴系数,随铺层角的增大呈现先减小后增大的趋势,其中0$^\circ$铺层时的复合材料水翼蔡$\!$-$\!$-$\!$吴系数最小,50$^\circ$铺层时的复合材料水翼的蔡$\!$-$\!$-$\!$吴系数最大.
- 复合材料水翼 /
- 铺层角度 /
- 流固耦合 /
- 强度特性
Abstract: This paper investigates systematically the structural deformation characteristics of composite hydrofoils with own unique properties by numerical method to solve the fluid structure interaction problem on the composite hydrofoils. It establishes a numerical model of composite hydrofoils with fluid structure interaction in this study, which verifies the correctness of the numerical model by comparing the calculated results to the experimental results of Zarruk, and the numerical results show that the tip torsion angle of the composite hydrofoils increases with the increase of the Reynolds number. This paper investigates and analyses systematically the influence of the ply angle on the hydrodynamic performance and strength performance of composite hydrofoils in view of the numerical method. The results illustrate that the tip torsion angle of composite hydrofoils decreases with increasing the ply angle, while the tip displacement of composite hydrofoils decrease firstly and then increase with increase of ply angle. The study proposes two dimensionless, the dimensionless torsion angle and the dimensionless displacement, to eliminate the effect of engineering constants of composite on the structure deformation of composite hydrofoils, which is used to further investigate the influence of the bending-torsion coupling effect on the deformation characteristics of the composite hydrofoils. The strength of the composite hydrofoils is judged and studied by using the Tsai-Wu failure criterion. The numerical results show that the Tsai-Wu coefficient of composite hydrofoils decreases firstly and then increases with the increase of the ply angle, where the lowest Tsai-Wu coefficient and the largest Tsai-Wu coefficient appears in the 0$^\circ$layered composite hydrofoil and the 50$^\circ$layered composite hydrofoil, respectively.
- composite hydrofoil /
- ply angle /
- fluid structure interaction /
- strength

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