本文選題：力學實驗工裝 + 動剛度　； 參考：《電子科技大學》2011年碩士論文

【摘要】：動剛度是衡量結構抵抗預定動態(tài)激擾能力的特性,動剛度愈大,機械結構在動態(tài)激振力作用下的振動量愈小,其抗振性能愈強。力學試驗工裝的動剛度越大,抗振性能愈強,越能將振動臺的運動正確的傳遞給試驗產品,越能模擬產品的實際振動情況。 ANSYS作為有限元領域的大型CAE通用分析軟件,集結構、熱、流體、電磁和聲學于一體,以其多物理耦合分析的先進技術和理念,在國防領域和研究方面都有著廣泛而深入的研究。 本論文經過實例,論述了采用現(xiàn)代的設計方法,對力學試驗工裝進行模型設計后,基于ANSYS的有限元分析,大大提高了工裝的動剛度,優(yōu)化了設計方案,改善了隨時間變化的載荷對力學試驗工裝結構的影響,使工裝的一階固有頻率由原始設計的872Hz提高到了2119Hz,滿足產品設計文件規(guī)定的力學試驗要求。 通過對力學試驗工裝動剛度的有限元分析,能提高工裝的一階固有頻率,增強工裝的抗振性能,其效果很好,具有很高的理論價值,對武器型號電子產品的設計有很好的借鑒和參考作用。
[Abstract]:The dynamic stiffness is the characteristic of structure resistance to predetermined dynamic disturbance, the greater the dynamic stiffness, the smaller the vibration of the mechanical structure under the dynamic excitation force, the stronger its vibration resistance. The greater the dynamic stiffness of the mechanical test tooling, the stronger the anti vibration performance, and the more accurate the motion of the vibration table to the test product, and the more it can simulate the real product. Interplanetary vibration.
ANSYS is a large CAE general analysis software for the finite element field, which integrates structure, heat, fluid, electromagnetic and acoustics. With its advanced technology and concept of multi physical coupling analysis, it has extensive and deep research in the field of national defense and research.
After an example, this paper expounds the use of modern design method, after the model design of the mechanical test tooling, based on the finite element analysis of ANSYS, greatly improves the dynamic stiffness of the tooling, optimizes the design scheme, and improves the influence of the load on the mechanical test tooling structure with the change of time, so that the first natural frequency of the tooling is from the original. The designed 872Hz is raised to 2119Hz, which meets the mechanical test requirements specified in the product design document.
Through the finite element analysis of the dynamic stiffness of the mechanical test, the first order natural frequency of the tooling can be improved and the anti vibration performance of the tooling is enhanced. The effect is very good and has a high theoretical value. It has a good reference and reference function for the design of the electronic products of the weapon model.

【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH123.3;TP391.7

【參考文獻】

相關期刊論文 前4條

1 楊宇軍;ANSYS動力學仿真技術在航天計算機機箱結構設計中的應用[J];電子機械工程;2003年05期

2 禹言芳;孟輝波;;ANSYS在結構拓撲優(yōu)化設計中的應用[J];化工裝備技術;2007年01期

3 劉志紅,尹志宏;機械結構的理論及試驗模態(tài)分析方法[J];現(xiàn)代機械;2005年05期

4 駱劍,肖余之,陳健,邱瑞強,董尋虎;動力學在航天器中的若干應用[J];振動與沖擊;2002年04期

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本文編號：1799563