纤维缠绕复合材料壳体原位成型工艺研究

The research of in-situ modeling process for fiber winding composite shell

热固型缠绕复合材料壳体以其优异的性能在航空、军事和工业等领域得到了广泛应用.目前,制约其应用和发展的主要瓶颈是壳体的成本和性能,而壳体成型工艺直接决定了其最终性能和成本.由于缠绕壳体为中空结构,因此可以采用加热壳体内部金属芯模或内衬的方法实现缠绕后的或正在缠绕的复合材料的固化成型,即原位成型.本文介绍复合材料壳体原位成型新工艺,建立筒型壳体内加热固化过程的数学模型,利用有限元法对筒体固化过程中的温度和固化度进行了数值模拟分析.该研究为实现壳体高效、优质且低成本成型提供新思路,为原位成型工艺设计、模拟和参数优化提供分析模型和方法.

Thermosetting winding composite shell has been widely applied in various fields, such as aviation, military, industry and so on. At present, the key factors which restrict its application and development are cost and performance of shell. However, the modeling process directly determines its performance and cost. Because winding shell is hollow, the method that heating internal metal mandrel or liner of the shell can be a- dopted to realize curing of the composite winded or being winded, which is called in - situ modeling. This paper introduce the new in - situ modeling process for composite shell, build the mathematical model for internal heating curing process of the cylinder shell, using finite element methods to carry on numerical simulation analysis for the temperature and curing degree distribution during curing process. This research provides a new idea for realizing shell modeling with high efficient, high quality and low cost, and supplies analysis model and method for the design, simulation and parameter optimization of in - situ modeling process.