热固性树脂基复合材料固化过程的三维数值模拟

针对热固性树脂基复合材料成型工艺的固化过程建立了数学模型,并采用有限单元法进行了三维瞬态数值分析。编制了有限元模拟程序CURESIM,通过具体数值模拟算例,表明本文中所建立的分析模型及算法具有较高的可靠性。模拟的固化过程并不特指某一成型工艺,因而模拟的数值方法具有一定的普遍性。模拟程序可以计算得到任意时刻复合材料内温度及固化度分布,通过数值模拟可以有效地优化固化加热工艺参数,提高产品质量。 

THREE-DIMENSIONAL SIMULATION OF CURING PROCESS FOR THERMOSET COMPOSITES

Mathematic models were established to represent the curing step of thermoset composites, a finite element formulation for three-dimensional transient cure simulation of composite structures was introduced and a simulation code CURESIM was developed based on the formulation. The simulated results match the experimental results well, which demonstrates the mathematic models and numerical algorithm are of high reliability. The temperature and degree of cure distribution can be obtained at any time by the simulated code. The numerical simulation method can be used to optimize the curing temperature cycle, which can improve the quality of composite products.