The U shaped structure of composite material was studied. Simulation technology was used for the temperature distribution of typical U shape part in autoclave toolings

and the temperature distribution of the tool and part in different periods. Under the influence of the heat transmission and distortion of tool

internal heat transmission

curing degree

ultimately distortion and residual stress of composite part were simulated. According to the results of the simulation

we optimize the structure of tool as well as the curing parameter

establish the compensating scheme for tool

thereby improving issues of part

including the solidification and thermal deformation. Based on analysis results

the compensating scheme had been established and validated. Result shows that the deformation between compensation and the theory shape is 1.37mm. The feasibility of compensation is verified. Profile compensation can be used for improving the manufacturing precision of composite component.