Abstract: In the traditional curing process of thick-walled shell winding, the inner temperature is often not enough to meet the requirement of its curing or time is too long, so it usually adopt molding process of many winding and much curing, high energy, low efficiency, which not only has greatly increased the cost, and as a result of layered of curing resin cross-linking, so difficult to guarantee the quality of the product. So the new internal-external coordination curing process is advanced in this paper and its principles are introduced. Two mathematical models including heat conduction model and cure kinetics model of fiber composite thick-walled shell of the internal-external coordination curing process are built. The finite element software ANSYS and APDL language are used to develop numerical simulation procedure of the process, the numerical simulation program of the internal-external coordination curing process is developed to study the distribution and the variation of temperature and curing degree. The numerical simulation of the new process shows that with external heating source temperature and preheating temperature, changing curve of temperature, curing and strain of center node is increased, and walled housing internal-external coordination curing time is shorted to 1/3 of the curing time of traditional method.

Key words: fiber composite thick-walled shell, the internal-external coordination curing, numerical simulation