MODAL ANALYSIS OF ELASTIC-VISCOELASTIC COMPOSITE STRUCTURES BASED ON ANSYS SECONDARY DEVELOPMENT
基于ANSYS二次开发进行黏弹性结构动力学分析

In recent years, elastic-viscoelastic composite structures are widely utilized in vibration reduction of engineering structure. But existing FE software packages are not designed to deal with the frequency-dependent mechanical properties of viscoelastic materials. Therefore, in this work new integral finite elements are developed and integrate into the ANSYS element bank, and an iteration algorithm is hooked up to the ANSYS. It is shown that this strategy is pragmatical and convenient. The model updating of the integral finite element based on the experimental modal parameters is also carried out.