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FE simulation of the curing behavior of the epoxy adhesive Hysol EA-9321

機(jī)譯：環(huán)氧膠Hysol EA-9321固化行為的有限元模擬

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Cold-curing adhesives, characterized by an unsteady curing degree, present various advantages for assembling large scale structures set up under outdoor conditions. Thus various applications can be found in aerospace and automotive industries where structures are affected by thermal and mechanical loads. Hence, the curing state of the adhesive must be known to evaluate the lifetime of such bonded structures. The evolution of the polymerization of the adhesive Hysol EA-9321 during the curing process was examined in this paper. To that end, the curing degree of the adhesive was experimentally and analytically investigated for different curing cycles with a view to a potential application in the aerospace domain, where structures are assembled at low temperatures. Existing dynamic and isothermal curing models were applied to simulate the curing behavior of the adhesive. Then, an FEM model was developed to simulate the process of adhesive curing by taking into account a thermo-kinetic coupling. (C) 2015 Elsevier Ltd. All rights reserved.
機(jī)譯：以固化度不穩(wěn)定為特征的冷固化膠粘劑，對(duì)于組裝在室外條件下搭建的大型結(jié)構(gòu)具有多種優(yōu)勢(shì)。因此，在結(jié)構(gòu)受熱和機(jī)械載荷影響的航空航天和汽車工業(yè)中，可以找到各種應(yīng)用。因此，必須知道粘合劑的固化狀態(tài)以評(píng)估這種粘合結(jié)構(gòu)的壽命。本文研究了固化過程中粘合劑Hysol EA-9321的聚合反應(yīng)。為此，針對(duì)不同的固化周期，對(duì)粘合劑的固化度進(jìn)行了實(shí)驗(yàn)和分析研究，以期在航空領(lǐng)域中的潛在應(yīng)用中進(jìn)行研究，其中在低溫下組裝結(jié)構(gòu)。應(yīng)用現(xiàn)有的動(dòng)態(tài)和等溫固化模型來模擬粘合劑的固化行為。然后，開發(fā)了一個(gè)FEM模型，通過考慮熱動(dòng)力學(xué)耦合來模擬粘合劑的固化過程。 （C）2015 Elsevier Ltd.保留所有權(quán)利。

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