本文關(guān)鍵詞： 復(fù)合材料 纖維纏繞 壓力容器 軸向殘余變形 自緊　出處：《玻璃鋼/復(fù)合材料》2017年09期 　論文類型：期刊論文

【摘要】：研究復(fù)合材料壓力容器自緊加卸載過(guò)程中的軸向殘余變形趨勢(shì),揭示復(fù)合材料壓力容器軸向殘余變形機(jī)理與成因,對(duì)合理控制復(fù)合材料壓力容器自緊過(guò)程中的尺寸穩(wěn)定性具有重要研究和應(yīng)用意義。主要針對(duì)碳纖維纏繞鈦內(nèi)襯壓力容器自緊后出現(xiàn)的殘余變形現(xiàn)象展開(kāi)實(shí)驗(yàn)研究和有限元分析。結(jié)果表明,自緊加卸載后,鈦內(nèi)襯發(fā)生了塑性殘余變形,為保證封頭曲線的連續(xù)協(xié)調(diào)性,封頭內(nèi)襯向內(nèi)凹陷,容器在軸向產(chǎn)生縮短變形趨勢(shì)。此外,鈦內(nèi)襯材料屈服強(qiáng)度變化是容器軸向殘余變形的顯著影響因素,隨著鈦內(nèi)襯材料屈服強(qiáng)度的增加,復(fù)合材料壓力容器軸向殘余變形量(縮短)減小,有限元分析結(jié)果和實(shí)驗(yàn)預(yù)測(cè)具有很好的一致性。
[Abstract]:The trend of axial residual deformation in composite pressure vessel during self-tightening loading and unloading is studied, and the mechanism and cause of axial residual deformation of composite pressure vessel are revealed. It is of great significance to study and apply the dimension stability of composite pressure vessel in the process of self-tightening. The experimental study is mainly carried out on the residual deformation of carbon fiber wound titanium lined pressure vessel after self-tightening. And finite element analysis. The results show that, After loading and unloading, plastic residual deformation occurs in the titanium liner. In order to ensure the continuity of the head curve, the inner liner of the head is depressed inward, and the vessel has a tendency of shortening deformation in the axial direction. The variation of yield strength of titanium lining material is a significant factor affecting the axial residual deformation of the vessel. With the increase of the yield strength of titanium lining material, the axial residual deformation (shortening) of composite pressure vessel decreases. The results of finite element analysis are in good agreement with experimental prediction.
【作者單位】： 中航工業(yè)特種飛行器研究所;
【基金】：湖北省自然科學(xué)基金(2014CFB140)
【分類號(hào)】：TB33;TH49

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本文編號(hào)：1523580