發(fā)布時(shí)間：2018-06-09 21:11

  本文選題：壓力管道 + 爆破壓力　； 參考：《浙江大學(xué)》2011年碩士論文

【摘要】：壓力管道作為一種物料運(yùn)輸?shù)奶胤N設(shè)備,在很多領(lǐng)域也有著廣泛的運(yùn)用,包括在石油、天然氣的長距離運(yùn)輸?shù)确矫�。隨著管道運(yùn)輸業(yè)的發(fā)展,壓力管道的安全問題也凸顯出來。安全事故的大量發(fā)生給管道工程設(shè)計(jì)工作敲響了警鐘,這就要求我們在設(shè)計(jì)管道時(shí),充分考慮管道爆破壓力等關(guān)鍵性問題�，F(xiàn)代的壓力管道設(shè)計(jì)對設(shè)計(jì)者提出了更高的要求,不僅要求設(shè)計(jì)者設(shè)計(jì)出符合強(qiáng)度要求的壓力管道,而且要求考慮管道鋪設(shè)等經(jīng)濟(jì)性問題。壓力管道的設(shè)計(jì)是否安全,直接關(guān)系到國家生產(chǎn)的安全運(yùn)行,人們生活的和諧有序。 本文首先總結(jié)了國內(nèi)外壓力管道關(guān)于爆破壓力的研究現(xiàn)狀,說明了現(xiàn)有的大多數(shù)理論在計(jì)算管道爆破壓力時(shí),存在著諸多問題。許多理論只能就一種或一類材料進(jìn)行預(yù)測,而在對多種不同性質(zhì)的材料進(jìn)行預(yù)測時(shí),所得的值往往會(huì)和實(shí)際值之間存在較大的偏差。其次,本文在闡述了雙剪應(yīng)力屈服準(zhǔn)則的基礎(chǔ)上,將該準(zhǔn)則運(yùn)用到了管道爆破壓力的計(jì)算中,將預(yù)測的結(jié)果和Tresca屈服準(zhǔn)則以及Mises屈服準(zhǔn)則得到的壓力管道爆破壓力值進(jìn)行了比較。再次,本文闡述了雙剪統(tǒng)一強(qiáng)度理論的基本原理,并運(yùn)用該理論計(jì)算得到了管道爆破壓力的統(tǒng)一解,將該統(tǒng)一解和利用Faupel、Swensson、Sbergor準(zhǔn)則得到的管道爆破壓力值進(jìn)行了比較,提供了不同材料壓力管道在利用雙剪統(tǒng)一強(qiáng)度理論計(jì)算爆破壓力時(shí)所需要的參數(shù)。最后,本文利用有限元軟件ABAQUS進(jìn)行了有限元模擬,通過有限元等尺寸的建模,計(jì)算得到了管道爆破壓力的模擬值,并將該模擬結(jié)果和實(shí)驗(yàn)值進(jìn)行了比較。發(fā)現(xiàn)現(xiàn)有的有限元軟件在模擬管道爆破壓力方面有比較大的誤差,為有限元軟件的進(jìn)一步發(fā)展提供了方向。
[Abstract]:As a special equipment of material transportation, pressure pipeline has been widely used in many fields, including long-distance transportation of oil and natural gas. With the development of pipeline transportation, the safety problem of pressure pipeline is also prominent. The large number of safety accidents have sounded the alarm bell for pipeline engineering design, which requires us to fully consider the pipeline blasting pressure and other key issues in pipeline design. Modern design of pressure pipes requires designers not only to design pressure pipes that meet the requirements of strength, but also to consider economic problems such as pipeline laying. Whether the design of pressure pipeline is safe or not is directly related to the safe operation of national production and the harmony and order of people's life. It is shown that there are many problems in the calculation of pipe blasting pressure in most existing theories. Many theories can only predict one or one kind of material, but when predicting many kinds of materials with different properties, there is often a big deviation between the obtained value and the actual value. Secondly, based on the double shear stress yield criterion, the criterion is applied to the calculation of pipe blasting pressure. The predicted results are compared with those obtained by Tresca yield criterion and Mises yield criterion. Thirdly, the basic principle of double shear unified strength theory is expounded, and the unified solution of pipe blasting pressure is obtained by using this theory. The unified solution is compared with that obtained by using the Faupeli Swenssonian Sbergor criterion. The parameters needed for the calculation of blasting pressure by using the unified strength theory of double shear are provided for the pressure pipes with different materials. Finally, the finite element simulation is carried out by using finite element software Abaqus, and the simulated value of pipe blasting pressure is calculated by modeling the finite element equal size, and the simulation results are compared with the experimental data. It is found that the existing finite element software has a large error in simulating the blasting pressure of pipeline, which provides a direction for the further development of the finite element software.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH49

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本文編號(hào)：2000844