摘要
为指导复合材料螺旋桨结构一体化研究,发挥混杂纤维在高阻尼、高性能桨叶开发环节的助力作用,本文探讨了这类构件的铺层设计、阻尼特性、结构变形以及水动力响应等一系列问题。首先,针对工程中常用的3种纤维增强材料进行阻尼与力学测试,据此提出6种不同的螺旋桨纤维铺层方案,并建立了精细化有限元模型;其次,利用仿真模型数值预报复合材料桨叶模态及振型,并结合模态应变能理论,研究了不同铺层角度和混杂方式的桨叶结构阻尼特性,从而实现以阻尼为目标的铺层分析及方案优选;最后,对遴选出的两种碳纤维(CF)/芳纶纤维(KF)混杂复合材料螺旋桨实施流固耦合仿真计算,考评纤维混杂对桨叶结构变形及水动力性能的影响,以便为该体系的设计优化和进一步推广应用提供支撑。
In order to guide the structural integration research on composite propeller,a series of issues related to layup design,damping property,structural deformation and hydrodynamic response of such components were discussed in this article,which could promote the utilization of hybrid fiber during the development of high damping and high performance blades.Firstly,the damping and mechanical tests were conducted concerning with three kinds of fiber reinforced materials which are commonly used in engineering.By taking into account the practical loading characteristics,six different fiber layup schemes for propeller were proposed,and the elaborate finite element models were established.Secondly,the modal and vibration analysis on composite blade were carried out through numerical simulation approach,and then the structural damping ratio of blade components with different fiber angles and material categories were investigated based on the strain energy theory.According to this evaluation,two kinds of layup design schemes with hybrid carbon fiber(CF)/Kevlar fiber(KF)were picked up because of their good damping property.Finally,the fluid-solid coupling analysis on these two hybrid composite propellers was conducted to discuss the influence of fiber hybridization on their structural deformation and hydrodynamic performance.These can provide effective support for optimization design and further promotion or application of composite propeller.
作者
李子龙
梁桂龙
李旭
丁国民
王继辉
LI Zilong;LIANG Guilong;LI Xu;DING Guomin;WANG Jihui(Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics,School of Science,Wuhan University of Technology,Wuhan 430070,China;School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China)
出处
《复合材料学报》
CSCD
北大核心
2024年第12期6518-6529,共12页
Acta Materiae Compositae Sinica
基金
国家自然科学基金(12202325)。
关键词
混杂纤维
复合材料螺旋桨
阻尼特性
仿真分析
水动力响应
hybrid fiber
composite propeller
damping property
numerical simulation
hydrodynamic responses
