發(fā)布時間：2018-03-14 16:49

  本文選題：纖維纏繞增強復合管　切入點：RTP管　出處：《浙江大學》2014年碩士論文　論文類型：學位論文

【摘要】：隨著我國國民經(jīng)濟飛速發(fā)展,能源消耗巨大,能源及時高效的供給決定我國經(jīng)濟能否健康可持續(xù)發(fā)展的關(guān)鍵因素。我國海上油氣田的開發(fā)為未來的能源供給提供了新的出路,海洋管道是海上油氣田的開發(fā)的重要組成部分。鋼管是使用歷史最長最為廣泛的海洋油氣運輸管道,但具有耐腐蝕性差、運輸及安裝效率低、維修成本高的特點。纖維纏繞增強復合管(RTP管)具有很強的耐腐蝕性、良好的柔韌性、便于運輸和便于安裝的優(yōu)點,成為了海上油氣運輸管道的新選擇。復合管由于其結(jié)構(gòu)及組成材料的復雜和特殊性、以及海洋環(huán)境的復雜性,對復合管的設(shè)計、運輸和正常工作方面的分析就尤為重要。 RTP管道以熱塑性材料為基體、芳綸纖維纏繞增強帶為增強層,其獨特的結(jié)構(gòu)和復雜的材料性能使其力學表現(xiàn)較為特殊。本文考慮RTP管在使用過程中遭受因為運輸油氣的短期壓力和壓力的長期作用,工作環(huán)境中的管內(nèi)外溫度變化,對其做應力應變分析和爆破壓力分析。其主要工作有以下幾個方面： (1)結(jié)合RTP管的構(gòu)成特點,簡化為由內(nèi)層、外層和增強層構(gòu)成的平面力學模型,對每層材料進行簡化；建立管道的平面應力模型,利用數(shù)值方法分析管道受內(nèi)壓時的應力應變及爆破壓力,并與ABAQUS分析結(jié)果對比。 (2)在前述所建立管道計算模型的基礎(chǔ)上,考慮管道在溫度影響下受內(nèi)壓時,計算其的應力應變和爆破值變化規(guī)律。 (3)在前述所建立管道計算模型的基礎(chǔ)上,使用已有文獻的材料試驗數(shù)據(jù),考慮高密度聚乙烯的線性粘彈性,用數(shù)值方法和有限元方法分析管道的應力應變隨時間變化規(guī)律并對比兩者結(jié)果。
[Abstract]:With the rapid development of China's national economy and huge energy consumption, the timely and efficient supply of energy is the key factor to determine the healthy and sustainable development of China's economy. The development of offshore oil and gas fields in China provides a new way out for the future energy supply. Offshore pipeline is an important part of offshore oil and gas field development. Steel pipe is the longest and most widely used offshore oil and gas transportation pipeline, but it has poor corrosion resistance and low efficiency of transportation and installation. High maintenance cost. Filament wound reinforced composite pipe (RTP) has the advantages of strong corrosion resistance, good flexibility, easy transportation and easy installation. It has become a new choice for offshore oil and gas transportation pipeline. Due to the complexity and particularity of its structure and composition material and the complexity of marine environment, it is particularly important to analyze the design, transportation and normal work of composite pipe. The RTP pipe is based on thermoplastic material, and aramid filament winding reinforcements are used as reinforcing layer. Its unique structure and complex material properties make its mechanical performance more special. In this paper, the temperature variation inside and outside the RTP tube is considered because of the short-term pressure and pressure of transporting oil and gas in the working environment. The stress-strain analysis and blasting pressure analysis are carried out. The main work is as follows:. 1) according to the structural characteristics of RTP pipe, the plane mechanics model composed of inner layer, outer layer and reinforced layer is simplified, and the plane stress model of pipeline is established. The stress-strain and blasting pressure of pipeline under internal pressure are analyzed by numerical method, and the results are compared with those of ABAQUS analysis. (2) on the basis of the calculation model of pipeline established above, considering the internal pressure of pipeline under the influence of temperature, the variation law of stress and strain and blasting value of pipeline under the influence of temperature are calculated. The linear viscoelasticity of HDPE is considered on the basis of the pipe calculation model established above and using the experimental data of the materials in the literature. The variation of stress and strain with time is analyzed by numerical method and finite element method, and the results are compared.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：P756.2

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