CAJ | 학술논문

利用Pro/E软件建立4缸发动机缸盖的三维模型，并运用Abaqus软件对其进行自由振动模态分析。对缸盖固有模态频率和振型进行测试，将有限元计算结果和试验结果进行对比分析表明，两者所得缸盖的固有频率数据吻合性较好，误差小于3%，证明仿真结果可信。对缸盖进行综合研究得出其最佳优化方案，通过优化结果可知，缸盖第1阶模态频率从1223 Hz提高至1386 Hz，提高了13.3%，且其它阶模态频率也有明显改善。
이용Pro/E연건건립4항발동궤항개적삼유모형，병운용Abaqus연건대기진행자유진동모태분석。대항개고유모태빈솔화진형진행측시，장유한원계산결과화시험결과진행대비분석표명，량자소득항개적고유빈솔수거문합성교호，오차소우3%，증명방진결과가신。대항개진행종합연구득출기최가우화방안，통과우화결과가지，항개제1계모태빈솔종1223 Hz제고지1386 Hz，제고료13.3%，차기타계모태빈솔야유명현개선。
The 3D model of 4-cylinder engine head is established by using software Pro/E. And Abaqus is applied for free vibration modal analysis of the cylinder. The natural modal frequencies and mode of vibration of the cylinder head are tested, then the results of FE calculation are compared with test results for comparison and analysis, which indicate that the natural frequency data of the cylinder head obtained through the two methods are in good agreement with the errors less than 3%, proving that the simulation results are trustworthy. Through comprehensive study, an optimal design of the cylinder is obtained. Optimization result shows that the first order modal frequency of the cylinder head is increased by 13.3%from 1223Hz to 1386Hz, and noticeably improvement of other order modal frequencies is also achieved.