Bump Steering
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video simulation file.
Software copyright © 2004 by The McGraw-Hill Companies, Inc. All rights reserved.
Info
An ill-fated rear suspension design tends to “bump steer,” i.e., turn the rear axle when hitting a bump on one side of the car. The fourbar linkage controls the up and down motion of one side of the rear axle and one wheel. Ideally, the wheel should move up and down in a straight vertical line when hitting a bump. As shown in the simulation, when one wheel has hit a bump, the center of the wheel moves forward as it moves up over the bump. This forward motion turns the axle and steers the car unintentionaly.
Source
This Working Model file is adapted from Figure 6-12 on p.286 in Design of Machinery, 3rd ed. by Norton, R. L., McGraw-Hill, 2004.
Credits
This Working Model file was first developed by Jie (Jeff) Yang.