Abstract
‘four in one’ nitric acid plant is a key equipment to manufacture nitric acid. Its foundation is placed between the axial flow compressor and the expander, and has larger amplitude. Choosing the foundation of this machine as study subject, this paper analyses the biggest disturbance value of all vibration source in line with Code for design of dynamic machine foundation and by adding T-shaped kerfs on the box girder between the axial flow compressor and the expander. It also conducts harmonic response analysis on this foundation with the finite element method. By comparatively analyzing the displacement harmonic response figure of nodal points on the X, Y and Z axis in the foundation before and after adding the T-shaped kerfs, it indicates that T-shaped kerfs can dramatically mitigate the steady-state harmonic response amplitude.
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