本文關(guān)鍵詞： 振動(dòng)試驗(yàn) 三軸振動(dòng)夾具 結(jié)構(gòu)優(yōu)化設(shè)計(jì) 模態(tài)分析 隨機(jī)振動(dòng)分析　出處：《西安電子科技大學(xué)》2015年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：隨著環(huán)境振動(dòng)試驗(yàn)的發(fā)展和實(shí)際使用要求的提高,振動(dòng)試件在相互垂直的X、Y、Z三個(gè)方向需要同時(shí)承受振動(dòng)環(huán)境的影響。試驗(yàn)夾具的結(jié)構(gòu)設(shè)計(jì)、制作和安裝使用作為振動(dòng)試驗(yàn)時(shí)至關(guān)重要的部分,會(huì)影響試驗(yàn)的成敗和試驗(yàn)結(jié)果的可靠性。本論文針對(duì)某型艙段的三軸振動(dòng)夾具,通過(guò)對(duì)夾具設(shè)計(jì)相關(guān)問(wèn)題的深入研究,并利用有限元分析軟件,來(lái)模擬振動(dòng)環(huán)境進(jìn)行試驗(yàn)仿真分析。首先,闡述了結(jié)構(gòu)動(dòng)力學(xué)的基礎(chǔ)理論知識(shí),簡(jiǎn)要敘述了ANSYS Workbench軟件的主要特點(diǎn)及分析步驟;通過(guò)模態(tài)分析算例、隨機(jī)振動(dòng)分析算例和ANSYS Workbench的結(jié)構(gòu)優(yōu)化算例熟悉并掌握軟件仿真分析的功能及基本流程,為振動(dòng)夾具的有限元仿真分析提供理論依據(jù)。其次,針對(duì)振動(dòng)試驗(yàn)夾具,闡述了其國(guó)內(nèi)外的研究發(fā)展及現(xiàn)狀,進(jìn)一步探究了夾具設(shè)計(jì)標(biāo)準(zhǔn)及典型振動(dòng)夾具的設(shè)計(jì)方法與步驟;針對(duì)給定的艙段模型和項(xiàng)目要求,利用Pro/E三維建模軟件,初步設(shè)計(jì)出三軸振動(dòng)夾具模型。再次,提出改進(jìn)方案,并對(duì)結(jié)構(gòu)改進(jìn)后的三軸振動(dòng)夾具模型進(jìn)行頻響分析,研究其固有頻率及隨機(jī)振動(dòng)響應(yīng)的結(jié)果;參照相應(yīng)的夾具設(shè)計(jì)標(biāo)準(zhǔn),利用結(jié)構(gòu)優(yōu)化設(shè)計(jì)進(jìn)一步完善三軸振動(dòng)夾具模型。最后,分析優(yōu)化設(shè)計(jì)后的三軸振動(dòng)夾具模型對(duì)整體模型系統(tǒng)振動(dòng)性能的影響,研究其頻響分析結(jié)果,確保夾具能將三軸振動(dòng)特性有效地傳遞,從而驗(yàn)證三軸振動(dòng)夾具設(shè)計(jì)的合理性及有效性。
[Abstract]:With the development of the environmental vibration test and the improvement of the practical application requirements, the vibration specimen needs to bear the influence of the vibration environment simultaneously in the three directions of mutual perpendicular to each other, and the structural design of the test fixture. Making and installing as a vital part of vibration test will affect the success or failure of the test and the reliability of the test results. Through the in-depth study of fixture design related problems, and the use of finite element analysis software to simulate the vibration environment for experimental simulation. Firstly, the basic theoretical knowledge of structural dynamics is expounded. The main features and analysis steps of ANSYS Workbench software are briefly described. Through modal analysis example, random vibration analysis example and ANSYS Workbench structure optimization example, we are familiar with and master the function and basic flow of software simulation analysis. It provides a theoretical basis for finite element simulation analysis of vibration jigs. Secondly, the research development and current situation of vibration jigs at home and abroad are described. The standard of fixture design and the design method and steps of typical vibration fixture are discussed. According to the given module model and project requirements, using Pro/E three-dimensional modeling software, the triaxial vibration fixture model is designed. Thirdly, the improvement scheme is proposed. The frequency response of the improved triaxial vibration fixture model is analyzed, and the results of the natural frequency and random vibration response are studied. According to the corresponding fixture design standards, the structural optimization design is used to further improve the triaxial vibration fixture model. Finally, the effect of the triaxial vibration fixture model on the vibration performance of the whole model system is analyzed. The results of frequency response analysis are studied to ensure that the triaxial vibration characteristics can be transmitted effectively, and the rationality and validity of the triaxial vibration fixture design are verified.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：V216.8

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