本文選題：螺桿鉆具 + 熱老化實(shí)驗(yàn)��； 參考：《計(jì)算力學(xué)學(xué)報(bào)》2017年04期

【摘要】：隨著我國油氣資源勘探開發(fā)向深部地層邁進(jìn),螺桿鉆具定子橡膠井下高溫?zé)崂匣瘑栴}日益凸顯,導(dǎo)致螺桿鉆具輸出性能衰減,嚴(yán)重影響鉆進(jìn)效率,迫切需要揭示熱老化對螺桿鉆具定子橡膠力學(xué)性能的影響,以在設(shè)計(jì)之初提出可減小螺桿鉆具輸出性能衰退的綜合方案。本文開展了螺桿馬達(dá)定子橡膠在不同溫度下的熱老化實(shí)驗(yàn),通過拉伸實(shí)驗(yàn)得出應(yīng)力應(yīng)變數(shù)據(jù)并擬合出Mooney-Rivlin模型常數(shù)和Yeoh模型常數(shù);再對所得實(shí)驗(yàn)數(shù)據(jù)及所求得的模型常數(shù)數(shù)據(jù)進(jìn)行分析;最后,使用確定了基本常數(shù)的模型開展了數(shù)值計(jì)算。計(jì)算結(jié)果表明,隨著溫度的上升,Mooney-Rivlin模型常數(shù)C_1增大、C_2減小,C_1和C_2呈明顯相反變化的趨勢,Yeoh模型常數(shù)C_(10)和C_(20)增大,C_(30)減小;通過模型計(jì)算結(jié)果與室內(nèi)實(shí)驗(yàn)測定結(jié)果的對比,證明了Mooney-Rivlin模型較Yeoh模型更適合于螺桿馬達(dá)定子橡膠的力學(xué)分析。不考慮環(huán)境溫度熱老化和考慮環(huán)境溫度熱老化,螺桿鉆具定子襯套的計(jì)算結(jié)果存在很大差別,研究工作不僅證明了螺桿鉆具定子橡膠熱老化研究的必要性,更為螺桿鉆具定子橡膠的線型設(shè)計(jì)和過盈量選取提供了參考。
[Abstract]:With the development of oil and gas resources in China, the problem of high temperature thermal aging in the stator rubber hole of screw drill tool becomes more and more prominent, which results in the attenuation of the output performance of the screw drill tool and seriously affects the drilling efficiency. It is urgent to reveal the influence of thermal aging on the mechanical properties of the stator rubber of the screw drill tool, so as to put forward a comprehensive scheme to reduce the deterioration of the output performance of the screw drill tool at the beginning of the design. The thermal aging experiments of stator rubber of screw motor at different temperatures were carried out in this paper. The stress-strain data were obtained by tensile test and the Mooney-Rivlin model constants and Yeoh model constants were fitted. Then the experimental data and the obtained model constant data are analyzed. Finally, the numerical calculation is carried out by using the model which determines the basic constant. The results show that with the increase of temperature, the Mooney-Rivlin model constant C _ S _ 1 and C _ S _ 2 decrease the trend that the C _ S _ 1 and C _ S _ 2 show a marked opposite change, and the Yeoh model constant C _ (10) and C _ (20) _ (20) increase and increase (C _ (30); the results of the model calculation are compared with the results of the indoor experiment. It is proved that Mooney-Rivlin model is more suitable for mechanical analysis of screw motor stator rubber than Yeoh model. The calculation results of the stator bushing of screw drilling tools are very different without considering the environmental temperature thermal aging and the environmental temperature thermal aging. The research work not only proves the necessity of the research on the thermal aging of the screw drill tool stator rubber. It also provides reference for the design of stator rubber and the selection of interference.
【作者單位】： 西南石油大學(xué)機(jī)電工程學(xué)院;
【基金】：國家自然科學(xué)基金(51674214,51604234) 四川省青年科技創(chuàng)新團(tuán)隊(duì)(2017TD0014)資助項(xiàng)目
【分類號】：TE921.2;TQ336.5

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