Research on the flexible multibody dynamics of lifting mechanism of neutron spectrometer sample table

Abstract

First, the lifting mechanism of neutron spectrometer sample table was designed. Then, every single part flexible multibody models and all parts flexible multibody model were built using ANSYS and ADAMS. Finally, the single part flexible multibody models and all parts flexible multibody model were analyzed when lifting mechanism reached the highest position and sliding table was moving along the X- or Y-axis with 1 ton load. The results indicate that the average deformation along Z direction is maximum among all directions of sliding table center, which is 30.1 μm. Outer cylinder takes up the largest proportion of the deformation in X direction, which is 75.8%, middle cylinder takes up the largest proportion of the deformation in Y direction, which is 91.32%, and inner cylinder takes up the largest proportion of the deformation in Z direction, which is 89.36%. Among the eight guide rails of lifting mechanism, four guide rails between the inner and middle cylinders are under uniform load, and the other four guide rails between middle and outer cylinder are under non-uniform load. The findings of the research could guide the optimal design of the neutron spectrometer sample table.