摘要
将有限元法和GHM法相结合 ,给出了建立主动约束层阻尼 (ACLD)板结构动力学模型的新方法。建模时 ,考虑到粘弹材料 (VEM )的纵向位移影响 ,采用GHM方法描述VEM的本构关系 ,解决了VEM的力学特性随温度和频率变化的难点 ,避免因VEM的复杂本构关系而产生的微分积分方程。算例表明本文给出的建模方法是准确的 ,A CLD结构能够有效控制结构振动。
A new modeling method for active constrained layer damping (ACLD) plate based on the conjunction of finite element method(FEM) and GHM(Golla-Hughes-Mctavish) method is presented in this paper. It is difficult to carry out dynamical analysis and control research by conventional methods because the constitutive relations of viscoelastic materials (VEM) vary with the frequency and temperature. In order to solve this problem, the GHM method is utilized to describe the constitutive of VEM. The results of simulation indicate that the new modeling method is accurate and ACLD treatments can attenuate the structure vibration effectively.
出处
《高技术通讯》
EI
CAS
CSCD
2003年第3期42-46,共5页
Chinese High Technology Letters
基金
国防科技重点实验室基金 (JS 5 2 4 3)资助项目。