RESEARCH PAPERS: Mechanisms Papers

Shape Optimization of Cam Profiles Using a B-Spline Representation

[+] Author and Article Information
E. Sandgren, R. L. West

School of Mechanical Engineering, Purdue University

J. Mech., Trans., and Automation 111(2), 195-201 (Jun 01, 1989) (7 pages) doi:10.1115/1.3258983 History: Received March 01, 1988; Online November 19, 2009


An arbitrary acceleration profile for the cam follower acceleration is generated using a B-spline representation. The control point locations for the B-spline become the design variables in the nonlinear programming problem. The B-spline representation provides for local control of the acceleration profile which is required in order to generate reliable optimization results. Constraints are imposed in order to place appropriate limits on the contact stress, lift, duration, acceleration, jerk, radius of curvature, manufacturing requirements, and to avoid cam-follower separation. The objective function may take on a number of forms depending upon the design requirements. The optimization is carried out with a gradient based penalty function algorithm. A specific example is presented in which the flow area is maximized for an internal combustion engine.

Copyright © 1989 by ASME
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