仿生表面形态齿轮的模态分析  

Modal analysis of gear with bionic surface morphology

作　　者：韩志武[1] 吕尤[1] 董立春[1] 张俊秋[1] 牛士超[1] 马荣峰[1] 任露泉[1] 

机构地区：[1]吉林大学工程仿生教育部重点实验室,长春130022

出　　处：《吉林大学学报（工学版）》2010年第6期1604-1608,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(50635030);教育部留学归国人员科研启动基金项目

摘　　要：在Pro/E中建立了高精度的参数化渐开线直齿圆柱齿轮模型,以工程仿生学和有限元理论为基础,运用MSC.Nastran分析了仿生表面形态齿轮的动力学性能。通过对普通齿轮和仿生表面形态齿轮进行模态分析,分别计算出了其前10阶固有频率和振型。结果表明,与普通齿轮相比,仿生表面形态齿轮各阶最大振幅更小,其固有频率明显降低,且趋势更为平稳,有效地改善了齿轮的动态特性,提高了齿轮的可靠性。The high-accuracy parameterized involute spur gear model was established by using Pro/e software. Based on the engineering bionics and the finite element theory,the effect of the bionic surface morphology on the improvement of the dynamic performances of the gear was analyzed using MSC.Nastran software.By comparison of the modal analyses of ordinary gear and the gear with bionic surface morphology,the anterior 10 ranks of natural frequencies and mode shapes were calculated.The results show that the maximum amplitude of any rank of the anterior 10 ranks of the gear with bionic surface morphology is smaller than that of the ordinary gear.The natural frequency of the gear with bionic surface morphology decreases obviously and the trend of the natural frequency is much smoother than that of ordinary gear.The dynamic characteristics and the reliability of the gear have been ameliorated effectively.

关 键 词：工程仿生学 圆柱齿轮 固有频率 仿生表面形态 模态分析 

分 类 号：TB17[生物学—生物工程] TH164[机械工程—机械制造及自动化]