CAJ | 학술논문

针对研制的牛蒡收获机振动收获系统，为进一步优化该系统的作业性能，采用有限元模态分析与试验模态分析相结合的研究方法，获得该系统的前30阶的固有频率，以及各主要工作部件的典型振型。研究结果表明：系统的1~14阶模态(3.3~77Hz)主要表现为挖掘铲和振动连杆的弯振；15~20阶模态(79.47~125.37Hz)表现为扎草刀、支撑臂和振动连杆的弯曲振动；21~30阶模态(153.29~232.55Hz)表现为整机的末端振动，上述模态属性可为系统结构振动特性的描述及整机作业性能的优化提供依据。
침대연제적우방수획궤진동수획계통，위진일보우화해계통적작업성능，채용유한원모태분석여시험모태분석상결합적연구방법，획득해계통적전30계적고유빈솔，이급각주요공작부건적전형진형。연구결과표명：계통적1~14계모태(3.3~77Hz)주요표현위알굴산화진동련간적만진；15~20계모태(79.47~125.37Hz)표현위찰초도、지탱비화진동련간적만곡진동；21~30계모태(153.29~232.55Hz)표현위정궤적말단진동，상술모태속성가위계통결구진동특성적묘술급정궤작업성능적우화제공의거。
In order to improve the performance of burdock harvester, the finite element analysis and mode test were conducted, and the first 30 frequencies and corresponding mode shapes were obtained. There were a torsion deformation of shovel and a connecting rod in the first to the fourteenth (3.3-77Hz)modes. There were a torsion deformation of grass cutter, a holding rod and a connecting rod in the fifteenth to the twentieth (79.47-125.37Hz). There was a slight torsion deformation of whole structure in the twenty-first to the thirtieth (153.29-232.55Hz). These could be used to analyze the vibration characteristics of the machine and optimize the working system.