Framed Vehicles often exhibit after shake, or jiggle, when excited by rough road impacts. To control the amount of aftershake due to the response of full-vehicle modes, several methods are employed. Tuning the frequency response of key structural components to frequencies above the highest "excitation" frequency is one current method. Another is to integrate damping into the system. These methods can fall short of providing effective performance for two reasons: 1) added stiffness often introduces the transmission of additional force into the body 2) added damping can require the use of non durable rubber compounds. Therefore, the use of non-linear isolation members is studied here. The measured response to impulsive inputs of a single degree of freedom system with differing mounting properties is presented here. The results show the extent to which mounting linearity contributes to the shortening of the transient portion of the response to an impact without adding damping to the system.
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