本文關(guān)鍵詞：外彎矩下螺栓法蘭連接緊密性研究　出處：《潤滑與密封》2017年05期 　論文類型：期刊論文

  更多相關(guān)文章： 外彎矩 內(nèi)壓 墊片壓緊應(yīng)力

【摘要】：為準(zhǔn)確分析螺栓法蘭連接系統(tǒng)的緊密性,利用當(dāng)量內(nèi)壓法當(dāng)量軸向力法和變形協(xié)調(diào)方程,研究外彎矩作用下螺栓法蘭連接中的墊片壓緊應(yīng)力。分析結(jié)果表明:若利用當(dāng)量內(nèi)壓法來計算,外彎矩等同于內(nèi)壓,相當(dāng)于增大了系統(tǒng)的內(nèi)壓,但并不能體現(xiàn)出外彎矩作用下墊片應(yīng)力在螺栓法蘭連接系統(tǒng)分布的不均勻性;而利用當(dāng)量軸向力法來計算,可以體現(xiàn)出整個系統(tǒng)在承受外彎矩作用導(dǎo)致的墊片應(yīng)力沿管道圓周方向按余弦分布的不均勻性,并且墊片受拉側(cè)和受壓側(cè)的壓緊應(yīng)力相差增大,其中受拉側(cè)墊片應(yīng)力減小,受壓側(cè)墊片應(yīng)力增大,因此螺栓法蘭連接的緊密性需重點(diǎn)考慮受拉側(cè)的墊片應(yīng)力。
[Abstract]:In order to accurately analyze the tightness of bolt flange connection system, the equivalent internal pressure method is used. The equivalent axial force method and deformation coordination equation are used to study the gasket compression stress in bolted flange joints under the action of external bending moment. The analysis results show that if the equivalent internal pressure method is used to calculate the external moment, the external moment is equal to the internal pressure. It is equivalent to increase the internal pressure of the system, but it can not reflect the uneven distribution of gasket stress in the bolted flange connection system under the action of external bending moment. By using the equivalent axial force method, the inhomogeneity of cosine distribution of gasket stress caused by the external bending moment of the whole system can be reflected. And the difference of the compression stress between the tension side and the compression side of the gasket increases, in which the stress of the tension side gasket decreases and the pressure side gasket stress increases. Therefore, the stress of the tension side should be taken into account in the tightness of the bolted flange connection.
【作者單位】： 武漢工程大學(xué)機(jī)電工程學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(51305310) 湖北省科技廳科學(xué)研究計劃項(xiàng)目(Q20131506) 武漢工程大學(xué)研究生教育創(chuàng)新基金項(xiàng)目(CX2015019)
【分類號】：TH136
【正文快照】： j縥縥縥縥縥縥縥，

本文編號：1429029