【摘要】：通過注模模擬軟件PAM-RTM可以預(yù)測復(fù)合材料液體成型工藝中樹脂的流動(dòng)時(shí)間和模擬樹脂的流動(dòng)形式。滲透率是成型工藝模擬中重要的參數(shù),面內(nèi)和面外滲透率通常采用復(fù)雜且昂貴的封閉模具來測試,本工作自建了一套結(jié)構(gòu)簡單、操作方便且成本低廉的模具,使用真空輔助樹脂灌注(VARI)工藝可獲得準(zhǔn)確的面內(nèi)和面外滲透率參數(shù)。采用一種簡單的等效建模方法,通過分層建模方法建立了有限元模型。將滲透率參數(shù)輸入模擬注模軟件PAM-RTM中,將使用等效建模方法所得模擬計(jì)算結(jié)果與實(shí)驗(yàn)液體成型結(jié)果進(jìn)行了比較。計(jì)算模擬樹脂充模時(shí)間為254 s,比實(shí)驗(yàn)工藝樹脂充模時(shí)間(301 s)短。在使用等效建模方法的流道布局基礎(chǔ)上,制備了加筋壁板結(jié)構(gòu)件,對(duì)所選方案進(jìn)行了工藝驗(yàn)證。
[Abstract]:The flow time of resin and the flow form of simulated resin in liquid molding process of composite materials can be predicted by injection simulation software PAM-RTM. Permeability is an important parameter in molding process simulation. In-plane and out-of-plane permeability is usually tested by complex and expensive closed molds. In this work, a set of molds with simple structure, convenient operation and low cost can be built. Accurate in-plane and out-of-plane permeability parameters can be obtained by vacuum assisted resin perfusion (VARI) process. A simple equivalent modeling method is used to establish the finite element model by hierarchical modeling method. The permeability parameters are inputted into the simulation injection software PAM-RTM, and the simulation results obtained by using the equivalent modeling method are compared with the experimental liquid molding results. The filling time of simulated resin is 254 s, which is shorter than that of experimental process resin (301 s). On the basis of the flow channel layout of the equivalent modeling method, the reinforced panel structure is prepared, and the process verification of the selected scheme is carried out.
【作者單位】： 北京民用飛機(jī)技術(shù)研究中心;
【基金】：國家863計(jì)劃基金項(xiàng)目(2012A040209)
【分類號(hào)】：V261

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