Study of Typical Sandwich Structural Composites VARI Process Molding Simulation Technology and Molding Experiments
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摘要: 对于大尺寸夹芯结构或复杂形状夹芯结构复合材料的VARI工艺成型过程的模拟仿真计算,如果采用传统的建模方法,则建模困难,模拟仿真计算量大,效率不高。针对此问题,提出了一种简单方便的等效建模法。以弧形和带加强筋的夹芯结构复合材料构件为基础模型,采用等效建模法建立了实体CAD模型和有限元网格模型,并利用PAM-RTM软件对两种夹芯结构复合材料构件的VARI工艺成型过程进行了仿真计算,并结合工艺成型实验进行了实验验证。Abstract: For the VARI process molding simulation of big size sandwich structure composites or sandwich composites of complex shapes, traditional modeling method is inefficient as the modeling is difficult and the simulation calculation is large. In this paper, a simple and convenient equivalent modeling method is proposed. in which a VARI process molding simulation has been carried out on a curved plate and a ribs reinforced plate of foam sandwich structural composite by using PAM-RTM software. The simnlation is verified by the vacuum-assisted resin infusion molding experiments.
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Key words:
- Vacuum Assisted Resin Infusion /
- foam sandwich /
- composites /
- Simulation
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