Ⅲ组合型线变截面涡旋齿的参数分析和优化  

Parameters analysis and optimization ofⅢcombined profile variable wall thickness scroll tooth

作　　者：彭斌[1] 陶耀辉 刘慧鑫 PENG Bin;TAO Yaohui;LIU Huixin(School of Mechanical and Electrical Engineering,Lanzhou Univ.of Tech.,Lanzhou 730050,China)

机构地区：[1]兰州理工大学机电工程学院,甘肃兰州730050

出　　处：《兰州理工大学学报》2023年第6期50-56,共7页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(51675254,51966009);国家重点研发计划“科技助力经济2020”重点专项(SQ2020YFF0420989);兰州市人才创新创业项目(2020-RC-23);甘肃省科技计划项目(20YF8GA057)。

摘　　要：为研究型线参数对变截面涡旋齿几何性能的影响,以Ⅲ组合型线变截面涡旋齿的型线面积、占积比和行程容积为对象建立相应的数学模型,得到型线参数与研究对象的关系.利用NSGA-Ⅱ算法,以占积比和行程容积为优化目标进行多目标优化设计,得到了相关型线参数的Pareto最优解集,并将优化后涡旋盘与优化前涡旋盘在几何性能和力学性能方面进行对比.结果表明,通过NSGA-Ⅱ算法优化可以有效改善变截面涡旋齿的几何性能,但不利于变截面涡旋盘的力学性能改善.研究结果为Ⅲ组合型线变截面涡旋齿设计时型线参数的选取提供了参考.In order to study the influence of the profile parameters on the geometric performance of the variable cross-section scroll tooth,mathematical models were established for the profile area,occupancy ratio,and suction volume of III combined profile variable wall thickness scroll tooth,the relationship between the profile parameters and which are obtained.Utilizing algorithm NSGA-Ⅱ,the multi-objective optimization design is carried out with the occupancy ratio and the stroke volume as the optimization objectives,resulting in a Pareto optimal solution set of the relevant profile parameters.Subsequently,a comparative analysis is conducted between the optimized scroll tooth and unoptimized ones in terms of their geometric and mechanical performance.The result show that geometrical performance of the variable wall thickness scroll tooth is improved effectively through optimization of algorithm NSGA-Ⅱbut it is not conducive to enhancing the mechanical performance.The research results can provide valuable insights into the selection of the profile parameters in the design of theⅢcombined profile variable wall thickness scroll tooth.

关 键 词：Ⅲ变截面涡旋齿 几何性能 NSGA-Ⅱ算法 多目标优化设计 

分 类 号：TH45[机械工程—机械制造及自动化]