热固性树脂基复合材料热隔膜成型过程数值仿真

发布时间：2018-03-08 14:22

  本文选题：热固性树脂基复合材料　切入点：热隔膜成型　出处：《复合材料学报》2016年07期 　论文类型：期刊论文

【摘要】：为研究制件成型过程中的层间滑移情况及固化后的回弹变形,首先,利用自行开发的热隔膜成型装置制备了热固性树脂基复合材料C型制件。同时,针对热隔膜成型过程建立了三维数值仿真模型;该模型由3个复合材料固化过程子模型构成,包括热-化学模型、层间滑移模型和固化变形模型。然后,在此基础上将固化过程中复合材料性能的时变特性引入到仿真模型中,并将仿真结果与文献中的实验结果进行比较。最后,利用建立的仿真模型对热隔膜成型过程进行了数值模拟,并与实验进行比对,重点研究了成型过程中温度、固化度分布、层间滑移以及固化变形情况。所得结果证明所建立的数值模型对热隔膜成型过程的预测具有较高的可靠性及准确性,可以为后续热隔膜成型参数优化和模具修正提供参考。
[Abstract]:In order to study the interlaminar slip and springback deformation during the forming process of the parts, the thermosetting resin matrix composites C type parts were prepared by using the thermal diaphragm forming device developed by ourselves, at the same time, A three-dimensional numerical simulation model is established for the forming process of thermal diaphragm, which consists of three sub-models of curing process of composite materials, including thermo-chemical model, interlaminar slip model and solidification deformation model. On this basis, the time-varying properties of composite materials during the curing process are introduced into the simulation model, and the simulation results are compared with the experimental results in the literature. Finally, The simulation model is used to simulate the forming process of the thermal diaphragm, and compared with the experiment, the distribution of temperature and curing degree during the forming process is studied emphatically. The results show that the established numerical model has high reliability and accuracy in predicting the forming process of the thermal diaphragm, and can provide a reference for the optimization of the forming parameters of the thermal diaphragm and the modification of the die.
【作者单位】： 西北工业大学陕西省数字化制造工程技术研究中心;中航飞机股份有限公司西安飞机分公司;
【基金】：国家自然科学基金(51275420)
【分类号】：TB33
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本文编号：1584260