振动弛张筛橡胶模态分析与测试
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摘要
对于橡胶弹性元件在动态环境中没有精确的解析公式能够描述其弹性特性的问题,通过有限元分析法和模态实验分析法对橡胶动态特性进行研究。在ANSYS Workbench中对橡胶进行模态分析,获得了橡胶主运动自由度方向上的第1阶固有频率为17.635 Hz及振型,再通过模态实验测得橡胶第1阶固有频率为16.75 Hz。研究结果表明,二者相对误差5.28%,在工程实际允许误差范围内,验证了有限元分析结果的正确性,为橡胶的动态特性分析提出了新思路。
For the elastic properties of rubber elastic elements in dynamic environment, the elastic properties of rubber can be described. The dynamic characteristics of rubber are studied by finite element analysis and modal experiment analysis. In ANSYS Workbench, the modal analysis of rubber is carried out. The first natural frequency of the degree of freedom of the main motion of rubber is 17.635 Hz and the vibration mode is obtained. Then the first natural frequency of rubber is measured to be 16.75 Hz by modal experiment. The results show that the relative error of the two is 5.28%, and the correctness of the finite element analysis result is verified within the actual allowable error range of the engineering. A new idea for the dynamic analysis of rubber is proposed.
For the elastic properties of rubber elastic elements in dynamic environment, the elastic properties of rubber can be described. The dynamic characteristics of rubber are studied by finite element analysis and modal experiment analysis. In ANSYS Workbench, the modal analysis of rubber is carried out. The first natural frequency of the degree of freedom of the main motion of rubber is 17.635 Hz and the vibration mode is obtained. Then the first natural frequency of rubber is measured to be 16.75 Hz by modal experiment. The results show that the relative error of the two is 5.28%, and the correctness of the finite element analysis result is verified within the actual allowable error range of the engineering. A new idea for the dynamic analysis of rubber is proposed.
引文
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[2]鲍玉新,李永志,王淑军,等.振动筛用橡胶弹簧的设计与计算[J].煤矿机械,2008,29(2):6-8.
[3]杨志勇. GSKCWS3675超静定网梁结构大型直线振动筛动态特性分析及优化[D].徐州:中国矿业大学,2013.
[4]孙宝寿,吴明留,张雅灵,等. 100 t橡胶射出机机架结构的有限元模态分析与优化[J].机械制造,2017,55(4):15-18.
[5]韩勇,马咏梅.基于ANSYS二次橡胶减震器的模态分析[J].机械设计与制造,2010,3(3):63-65.
[6]肖俊恒.减震橡胶设计方法的研究[J].中国铁道科学,2001,22(6):111-116.
[7]翁国文,张馨.橡胶材料的选用[M].北京:化学工业出版社,2010.
[8]吕建国,康士廷. ANSYSWorkbench14.0有限元分析自学手册[K].北京:人民邮电出版社,2013.
[9]劳坤胜,金勇,卢亚运.基于ANSYS的水润滑橡胶艉轴承模态及谐响应分析[J].中国修船,2017,30(2):37-40,44.