螺旋桨无键过盈安装应力数值分析  

Numerical analysis of stress for keyless interference fitting of marine propeller

作　　者：胡旭晟[1] 范世东[1] 王炜 

机构地区：[1]武汉理工大学能源与动力工程学院,湖北武汉430063 [2]长江武汉航道工程局,湖北武汉430014

出　　处：《舰船科学技术》2015年第5期75-78,82,共5页Ship Science and Technology

基　　金：国家自然科学基金资助项目(51139005)

摘　　要：针对螺旋桨无键过盈安装后桨-轴应力数值计算问题,运用弹性力学理论和ANSYS有限元法进行应力的数值计算。通过理论值与仿真值的对比分析表明:桨-轴应力的仿真值比理论值略大,理论值与仿真值具有较好的一致性;Ansys有限元法考虑了接触边缘区域存在应力奇异性、桨-轴存在轴向应力和螺旋桨外表面存在径向应力的情况,比运用弹性力学理论求解更加准确可靠;通过桨-轴应力计算可以证明过盈量选取的合理性,为检验螺旋桨无键过盈安装的可靠性提供理论基础。For the stress calculation problem of the propeller-shaft after keyless interference fitting, the elasticity theory and Ansys finite element method are used to calculate the stress values of the propeller- shaft. By comparing the simulation value with the theoretical value, the results show that the simulation result of the propeller-shaft stress is slightly larger than the theoretical value, and the theoretical value and simulation value agree well. Ansys finite clement method considers the contact edge area where existing the stress singularity, the propeller-shaft where existing the axial stress and the external surface of the propeller where existing radial stress, so the result is more accurate and reliable than using the elasticity theory. The stress calculation of propeller-shaft can prove rationality of interference selection, which provides the theoretical basis for testing the reliability of the keyless interference fitting of marine propeller.

关 键 词：螺旋桨 无键过盈安装 应力 弹性力学理论 Ansys有限元法 

分 类 号：U664.33[交通运输工程—船舶及航道工程]