Optimization of clamping conditions in thin-walled part machining to minimize forced vibrations, part II: Dynamic updating of clamping force and location with position dependent dynamics

Abstract

Part I of the paper presents the identification of clamping locations and forces by considering the flexibility of thin-walled part at one tool location. Here, the effect of material removal and tool location in milling the flexible part is considered to minimize static and dynamic deflections. The optimization algorithm presented in Part I is computationally costly. Here, the changes in the stiffness and mass matrices are integrated into the optimization, and the clamping contact area is meshed with fewer elements, which reduces the computational load further. The method is validated in simulating the peripheral milling of a thin-walled cylindrical part with eightfold computational efficiency in comparison to the model presented in Part I.