DYNAMIC BEHAVIOR OF MODIFIED CONFIGURATIONS OF CONSTANT FORCE SLIDER MECHANISMS

Abstract

This research addresses the desire to understand the dynamic behavior of all Modified Configurations of Constant Force Slider Mechanisms (CFSMs) developed. Based on the principle of Dynamic Equivalence, a Generalized Mathematical Dynamic Model (GMDM) was developed for all modified configurations of CFSMs. In the dynamic evaluation of the modified configurations of CFSMs, three useful plots were also analyzed, the mean force plots, the median force plots, and the peak-to-peak force magnitude difference plots as a function of frequency. The peak-to-peak force plots also revealed the same interesting phenomenon which indicated that there is a range of frequencies over which the modified configurations of CFSMs also exhibit better constant-force behavior than they do statically. This better constant-force behavior is also likely due to inertial effects as expressed by every other previous researcher. The results obtained from experimentation with the inclusion of τ_CF and τ_AF show a very good agreement with that from the GMDM. Over the range of frequencies tested, the results for the modeled force were also within 1% of the relative error of the measured force. Depending on what attributes are most desirable; a wide frequency range with moderately low peak-to-peak force, a single frequency with very low peak-to-peak force, or some other similar effects, the modified configurations of CFSM parameters can also be optimized to achieve the desired results.