中国麻业科学2023，Vol.45Issue(6)：287-294,8.
基于ANSYS-Workbench的4BM-250型苎麻剥麻机机架有限元分析与结构优化
Finite Element Analysis and Structural Optimization of 4BM-250 Ramie Decorticator's Frame Based on ANSYS Workbench
摘要
Abstract
The frame of a fiber crops decorticating machine had an significant impact on the overall performance of the machine.In order to avoid insufficient structural strength and resonance of the frame during the working process of the machine.The three-dimensional model of the frame of 4BM-250 ramie decorticator was established by using solidworks software,and the simplified model was imported into the ANSYS Workbench for static and modal analysis of the frame.The results of static analysis showed that the maximum displacement and maximum stress of the frame under static load are 0.14 mm and 23.71 Mpa.It is less than the yield strength limit of structural steel of the frame material.Therefore,the strength and rigidity of the frame structure under the condition load can meet the design requirements.The modal analysis results showed that the natural frequency range of the first 6 steps of the frame was 0,the frequency of the 7-12 steps of the mode was 25.28-89.58 Hz,and the motion frequency of the diesel engine rotor was in the same range as the 8th step natural frequency of the frame.According to the vibra-tion types and deformation characteristics of the 8th step frequency,the frame model was improved and optimized,and modal analysis was conducted on the optimized model.The analysis results showed that the vibration frequencies of the first 1-6th order modes of the frame were 0,and the frequencies of the 7th to 12th order modes were 17.92,35.56,44.56,53.94,57.41 and 70.25,respectively.Compared with the previous improvement,the frequency of each mode of the improved model had decreased,an av-erage decrease was 15.81%,and the deformation under each mode was smaller,the deformation of main components was below 10 mm.Compared to the structure before improvement,the comprehensive me-chanical properties of the improved structure have been significantly improved,the research can provide reference for the research and design of mechanical structural components.关键词
苎麻/剥麻机机架/模态分析/静力学分析/结构优化Key words
ramie/ramie decorticator's frame/modal analysis/static analysis/structural optimization分类
农业科技引用本文复制引用
刘佳杰,马兰,向伟,颜波,段益平,文庆华,吕江南..基于ANSYS-Workbench的4BM-250型苎麻剥麻机机架有限元分析与结构优化[J].中国麻业科学,2023,45(6):287-294,8.基金项目
财政部和农业农村部:国家麻类产业技术体系资助(CARS-16-E21) （CARS-16-E21）
中国农业科学院科技创新工程(CAAS-ASTIP-2017-IBFC06) （CAAS-ASTIP-2017-IBFC06）
