Design and Experimental Study of a Mechanical System with Air Springs
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Publisher:The Ohio State University
Series/Report no.:The Ohio State University. Department of Mechanical Engineering Honors Theses; 2008
A laboratory system consisting of a rigid beam and two air springs system has been designed and constructed; this system simulates the planar dynamics of an automobile suspension. The dynamic response of this system was investigated with respect to two natural frequencies (ωn,1 and ωn,2), damping ratios and vibration modes in order to better understand the physics of such systems. It has been seen through experimental that nonlinear behavior is negligible for small displacements. Accordingly, this system can be, and is modeled linearly for small motions. For a certain range of displacements, the system parameters and modal properties have been characterized and accurately determined. A transfer function model has been developed which can be used to successfully predict and approximate frequency responses. Experimentally, this system is primarily described by a translational mode at ωn,1 and a rotational mode at ωn,2. Future work should focus on the nonlinear dynamics of the system.
Firestone Industrial Products, Co.
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