运用有限元分析的阻尼板优化设计
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
根据阻尼板各阶损耗因子与各材料应变能之间的关系,利用有限元软件AN SY S对5层阻尼圆板的前4阶损耗因子进行了有限元分析计算,并选取它们的倒数和为目标函数,再次应用AN SY S软件中的优化模块对阻尼圆板的各层厚度进行了优化设计。通过对一块5层阻尼板的优化仿真,使得阻尼板前4阶的阻尼损耗因子较优化前有较大幅度的提高,使其在工作环境中具有更好的减振性能。
Based on the relationship between the modal loss factor and the strain energy,the first four loss factors of five-layer damping disk are computed by finite element analysis(FEA) of ANSYS.The objective function is the reciprocal summation of the first four loss factors.Then,the thickness of every layer made up of the damping disk is optimized by the optimal module in ANSYS.The first four loss factors of the damping disk are increased greatly via the optimization simulation on the disk.Then,the damping disk has better capability of decreasing vibration as it is working.
引文
[1]Ioannides E,Grootenhuts P.A finite element analysisof the harmonic response of damped three-layer plates[J].Journal of Sound and Vibration,1979,67(2):302-318.
    [2]马邦安.五层粘弹性阻尼梁的损耗因子和频率[J].力学与实践,1982,4(1):39-43.
    [3]Johnson C D,Kienholz D A.Finite element predictionof damping in structures with constrained viscoelasticlayers[J].AIAA Journal,1982,20(9):1 284-1 289.
    [4]孙社营.粘弹阻尼结构动态性能的有限元分析[J].材料开发与应用,1999,14(6):31-36.
    [5]任志刚,卢哲安,楼梦麟.复合夹层结构频率及损耗因子的计算[J].地震工程与工程振动,2004,24(2):101-106.
    [6]杨雪,王源升,朱金华,等.二层粘弹阻尼复合结构的优化设计[J].海军工程大学学报,2003,15(4):69-72.
    [7]孙大刚,诸文农,郑荣,等.阻尼减振结构的动态优化[J].工程机械,1997,11:22-25.
    [8]杨光全.应用Ansys实现结构优化设计[C]//2004ANSYS中国用户论文集(光盘),四川:[出版者不详],2004.
    [9]振动与冲击手册编辑委员会.振动与冲击手册[M].第3卷.北京:国防工业出版社,1992:299-306.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心