RODYN Vibration Analysis, Inc. is a company founded by Edgar J. Gunter, Jr., Ph.D., Fellow ASME, who has worked in the field of vibrations of rotor machinery and fluid bearings for over 45 years and written over 175 technical papers and reports on various aspects of the dynamics of rotating machinery, fluid film bearings and balancing.  Dr. Gunter is now a professor emeritus, after teaching for 34 years in the Department of Mechanical, Aerospace and Nuclear Engineering at the University of Virginia.  Since his retirement in May of 1998, he has worked extensively with finite element analysis of rotating machinery on the microcomputer. Dr. Gunter has had considerable experience working with the power utility industry on various types of  equipment such as primary air fans, large turbine-generators, and main nuclear recirculation pumps with both fixed and tilting-pad bearings.  He has worked with industry and government on various rotor dynamic and vibration problems connected with high-pressure and seal injection pumps, turbine-generators, aircraft gas turbines, engine noise and vibration reduction, and fan manufacturing. He also consulted with NASA and participated in hands-on work on the space shuttle program in its early days.  NASA engineers utilize DyRoBeS software extensively, and Dr. Gunter has presented numerous on-site training courses at NASA on the use of both the rotor dynamics and bearing components of the software.

         Dr. Gunter has pioneered the use of squeeze-film dampers in industrial compressors for rotor dynamic stabilization.  Recently, the squeeze-film damper using closed-end air dampers has been applied for the stabilization and dynamic reduction of high-speed aircraft ACM units.

         In addition to our consulting work, RODYN also markets software programs designed for engineers in the utility, petrochemical, or aircraft industries who need powerful tools for the complete analysis of the dynamic characteristics of rotating turbomachinery. It is now possible for companies who have had little activity in the way of finite element analysis and the evaluation of stress and vibrational problems to have the very latest state-of-the-art software for analyzing rotors, supporting structures, casings, and piping vibrations. Engineers working on workstation or portable computers can now access the power formerly possible only on a mainframe computer for the analysis and diagnosis of vibration problems in rotating machinery.