應(yīng)用諧振裝置在電動(dòng)振動(dòng)臺(tái)上實(shí)現(xiàn)高量級(jí)沖擊響應(yīng)譜的仿真研究

Simulations of high level shock response spectrum test using resonant fixture on an electrodynamics shaker

摘要: 為提高電動(dòng)振動(dòng)臺(tái)沖擊響應(yīng)譜試驗(yàn)的試驗(yàn)量級(jí)，應(yīng)用有限元理論建立了電動(dòng)振動(dòng)臺(tái)及附加的諧振裝置的動(dòng)力學(xué)模型，在此基礎(chǔ)上開(kāi)展沖擊響應(yīng)譜試驗(yàn)的仿真研究。通過(guò)研究振動(dòng)臺(tái)動(dòng)態(tài)特性建立了沖擊響應(yīng)譜試驗(yàn)仿真方法，進(jìn)一步研究了應(yīng)用諧振裝置在振動(dòng)臺(tái)上實(shí)現(xiàn)高量級(jí)沖擊響應(yīng)譜試驗(yàn)的可行性。研究結(jié)果表明：使用諧振裝置可顯著地提高電動(dòng)振動(dòng)臺(tái)實(shí)現(xiàn)沖擊響應(yīng)譜試驗(yàn)的能力。

Abstract: In order to improve the response level in the shock response spectrum(SRS) test using electrodynamics vibration generator, a dynamic model of an electrodynamics shaker and its auxiliary resonant fixture is established by the finite element method(FEM). Firstly, the simulations of SRS test are carried out based on the shaker’s dynamic characteristics, then the feasibility of high level SRS test is discussed by applying the resonant fixture on the electrodynamics shaker. The results show that the resonant fixture could improve the shaker's capability in the SRS test.