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Thin-walled titanium alloy components with variable curvature are widely used in aerospace. During machining process, chatter is induced frequently because stiffness of the components is low. This paper present a finite element method to analyze modal parameters of thin-walled components with variable curvature. Solidworks and Ansys are used to build solid model, set finite element model and carry out modal analysis. Then, the first 20 order natural frequencies and mode shapes are obtained and analyzed. With simulation results, machining parameters can be optimized to avoid machining chatter, and machining precision will be improved. In addition, the main advantage of the approach is that the modal parameters can be obtained quickly without modal tests.

Vibration Modal Analysis of Thin-walled Component with Variable Curvature Based on Finite Element