Abstract
This paper presents an alternative technique to the modal analysis of machine foundations. The frequency dependent soil impedance (stiffness & damping), soil-foundation-machine system modeling techniques and the system natural frequencies and mode shapes are addressed in the paper. Through comparative study of the methodologies for identifying the foundation rigid body motion modes and local member motion modes, this study proposes the use of the Dynamic Magnification Factors (DMF) to determine the acceptability of natural frequencies and mode shapes. This paper introduces an alternative technique for analyzing the excitation potential of the natural modes of vibration and presents a practical methodology by using a Dynamic Magnification Factor (DMF) curve to analyze the dynamic behavior of the foundation members within the full range of machine operating speeds. All analysis studies, techniques, criteria and methodologies presented and described in the paper are using an actual engineering project as an example.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
