本文選題：自增強技術(shù) + 厚壁圓筒��； 參考：《安徽理工大學(xué)》2011年碩士論文

【摘要】：本文在介紹超高壓容器的概況和論述自增強技術(shù)國內(nèi)外發(fā)展概況的基礎(chǔ)上,采用彈塑性力學(xué)分析方法較為全面地闡述了理想彈塑性材料模型、應(yīng)變硬化材料模型、考慮鮑辛格效應(yīng)材料模型的超高壓自增強容器應(yīng)力計算公式,介紹了厚壁圓筒溫度應(yīng)力的估算方法。 基于厚壁圓筒的應(yīng)力最佳狀態(tài)為目標(biāo),通過“最優(yōu)化”設(shè)計方法建立其優(yōu)化設(shè)計模型,并利用MATLAB軟件編制了優(yōu)化設(shè)計程序,開發(fā)出厚壁自增強圓筒優(yōu)化設(shè)計人機(jī)界面。該程序具有人機(jī)對話功能,在程序運行界面中輸入初始結(jié)構(gòu)參數(shù)并選擇操作參數(shù),通過點擊按鈕運行優(yōu)化程序,獲取優(yōu)化結(jié)果,并有計算具體點應(yīng)力、顯示應(yīng)力分布圖和強度校核等功能,較以往的確定自增強彈-塑性界面半徑的方法,計算和收斂速度快,結(jié)果直觀準(zhǔn)確可靠,具有較強的可視化功能,計算結(jié)果易于保存和比較。 采用有限元法對超高壓自增強容器進(jìn)行應(yīng)力分析,利用ANSYS軟件作為分析工具,通過反應(yīng)器未作自增強處理與自增強處理的應(yīng)力分析比較及其溫度應(yīng)力的分析,驗證了超高壓自增強容器具有高彈性承載能力、低平均應(yīng)力和循環(huán)應(yīng)力幅、應(yīng)力沿壁厚方向分布更加均勻及材料的利用率較高等優(yōu)點,另外內(nèi)加熱方式可以使其圓筒內(nèi)壁應(yīng)力降低,筒體的應(yīng)力分布趨向均勻。較以往的手工分析,該方法具有分析效率高、分析范圍廣、分析結(jié)果更直觀等優(yōu)點。 有限元法和最優(yōu)化設(shè)計方法與傳統(tǒng)的解析法相比,其分析結(jié)果更精確,更接近真實值,且分析的范圍也更廣。應(yīng)用計算機(jī)輔助設(shè)計技術(shù)對厚壁自增強圓筒進(jìn)行了程序設(shè)計、應(yīng)力分析和比較,采用有限元分析方法得出的結(jié)果更接近實際工況,且驗證了部分自增強理論。 圖39表6參60
[Abstract]:On the basis of introducing the general situation of ultra high pressure vessels and discussing the development of self reinforcing technology at home and abroad, the elastoplastic mechanical analysis method is used to elaborate the ideal elastoplastic material model, strain hardening material model, and the stress calculation formula of super high pressure self reinforcing container considering the Bausinger effect material model, and the thickness is introduced. A method for estimating the temperature stress of a wall cylinder.
Based on the optimal stress state of thick wall cylinder, the optimization design model is established by "optimization" design method. The optimization design program is developed by using MATLAB software, and a human-computer interface is developed for the optimization design of thick wall self reinforced cylinder. The program has the function of human-computer dialogue, and the initial structure parameters are input in the interface of the program. Select the operating parameters, run the optimization program by clicking the button, get the optimization results, calculate the specific stress, display the stress distribution map and check the strength. Compared with the previous method to determine the radius of the self reinforcing elastic plastic interface, the calculation and convergence speed is fast, the result is intuitive, accurate and reliable, and it has strong visualization function and calculation knot. Fruit is easy to preserve and compare.
The finite element method is used to analyze the stress analysis of the ultra high pressure self reinforced container. The ANSYS software is used as an analysis tool. Through the analysis of the stress analysis and the stress analysis of the reactor without self enhancement and self reinforcement, it is proved that the super high pressure self reinforced container has high elastic bearing capacity, low average stress and cyclic stress amplitude. The stress distribution along the wall thickness is more uniform and the utilization ratio of the material is high. In addition, the internal heating method can reduce the stress of the inner wall of the cylinder, and the stress distribution of the cylinder tends to be uniform. Compared with the previous manual analysis, the method has the advantages of high analysis efficiency, wide analysis range and more intuitionistic analysis results.
Compared with the traditional analytic method, the finite element method and the optimal design method are more accurate, closer to the real value, and the scope of the analysis is wider. The application of computer aided design technology to the thick wall autofrettage cylinder is programmed, the stress analysis and comparison, the results obtained by the finite element method are closer to the actual work. And the partial autofrettage theory is verified.
Figure 39 table 6, 60

【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TH49

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 徐長江;縮套式超高壓容器的有限元及疲勞分析[D];吉林大學(xué);2013年

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本文編號：1858798