本文選題：熱固性樹脂基復合材料 + 帽型加筋結(jié)構(gòu)　； 參考：《復合材料學報》2016年01期

【摘要】：硅橡膠芯模是實現(xiàn)熱固性樹脂基復合材料帽型加筋結(jié)構(gòu)共固化成型的關(guān)鍵工裝之一,而在預浸料固化加熱過程中硅橡膠芯模的熱膨脹需要通過預制適當?shù)恼{(diào)型孔來消除,以保證帽型加筋結(jié)構(gòu)的成型質(zhì)量。首先,通過建立硅橡膠芯模預制調(diào)型孔熱力耦合有限元分析模型對不同結(jié)構(gòu)的硅橡膠芯模進行了計算機仿真,從而得出了實現(xiàn)復合材料帽型加筋結(jié)構(gòu)形性協(xié)同制造的硅橡膠芯模預制調(diào)型孔最佳尺寸范圍。然后,綜合分析了硅橡膠芯模受熱膨脹的可能影響因素,進而建立了考慮體積修正系數(shù)的預制調(diào)型孔計算模型。接著,利用有限元方法回歸了芯模預制調(diào)型孔體積修正系數(shù),并利用回歸出的修正系數(shù)對不同截面尺寸的帽型結(jié)構(gòu)進行了仿真驗證,從而確定了較為準確的預制調(diào)型孔理論計算模型。最后,通過實驗驗證了該數(shù)學模型及有限元分析方法的正確性,為制造復合材料帽型加筋結(jié)構(gòu)提供了理論與實驗依據(jù)。
[Abstract]:Silicone rubber core mould is one of the key tools to realize the cocuring forming of the cap reinforced structure of thermosetting resin matrix composites. However, the thermal expansion of the silicone rubber core mold needs to be eliminated by prefabrication and proper adjusting hole during the curing heating process of prepreg. In order to ensure the forming quality of cap reinforced structure. Firstly, the computer simulation of silicone rubber core die with different structure is carried out by establishing the thermo-mechanical coupling finite element analysis model of the prefabricated mold. Thus, the optimum size range of the prefabricated adjusting hole of the silicone rubber core die is obtained, which can realize the joint manufacture of the reinforced structure of the cap type of composite material. Then, the influence factors of thermal expansion of silicone rubber core die are analyzed, and the calculation model of prefabricated adjusting hole considering volume correction coefficient is established. Then, the volume correction coefficient of the core die is regressed by the finite element method, and the cap structure with different cross section size is simulated and verified by the regression correction coefficient. Thus, a more accurate theoretical calculation model of prefabricated adjustable holes is established. Finally, the correctness of the mathematical model and the finite element analysis method are verified by experiments, which provides the theoretical and experimental basis for the fabrication of composite cap reinforced structures.
【作者單位】： 中南大學機電工程學院;中南大學輕合金研究院;寧波大學機械工程與力學學院;
【基金】：“973”計劃(2014CB046502) 中國博士后基金(2014M562127) 湖南省博士后專項基金(2014RS4031) 國家重點實驗室開放基金(Kfkt2013-04)
【分類號】：TB33

【相似文獻】

相關(guān)期刊論文 前1條

1 石慶華;戴棣;曹正華;;復合材料加筋結(jié)構(gòu)界面層間應力分析建模[J];材料科學與工程學報;2009年05期

，

本文編號：1944399