Rigid-Flexibility Modeling and Simulations of Lower-Mobility Parallel Mechanisms

Yang Qiang; Geng Hua Wang; Bian Ji; Luo Hao

doi:10.4028/www.scientific.net/AMR.681.224

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 681Rigid-Flexibility Modeling and Simulations of...

Rigid-Flexibility Modeling and Simulations of Lower-Mobility Parallel Mechanisms

Abstract:

Considering the flexibility performance of lightweight slender axle in Delta parallel mechanisms, the effects of the elastic deformation on the kinematic accuracy of the mechanism are calculated based on the virtual prototype technology. Firstly, the 3D model of the mechanism is built via ADAMS software. Secondly, the geometric model of the driving rod is imported into ANSYS software to get meshed and generate the modal neutral files. Then, getting back to ADAMS, the original rigid component is replaced with the flexible body which constraint and driving is added to lately. At last, the rigid-flexibility hybrid model of the mechanism is built. Each frequency and vibration mode of the flexible body is calculated, using the simulation capabilities of the software. Furthermore, changes in motion accuracy of the mechanism under the effect of the force-elastic coupling are analyzed comparatively.