Computational synthesis of wheel-based mechanisms via shape and topology optimization
Kelley, Patrick Louis
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https://hdl.handle.net/2142/110590
Description
Title
Computational synthesis of wheel-based mechanisms via shape and topology optimization
Author(s)
Kelley, Patrick Louis
Issue Date
2021-04-28
Director of Research (if dissertation) or Advisor (if thesis)
James, Kai A
Department of Study
Aerospace Engineering
Discipline
Aerospace Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
topology optimization
wheel design
structural design
Abstract
Several wheel-barrow mechanisms were synthesized from first principles using a topology optimization method. First, a shape optimization problem was formulated in order to generate a wheel geometry that minimizes work done while rolling over terrain. Flat and sinusoidal ground profiles were considered, resulting in approximations to a circle and ellipse, respectively, as expected by an analytical solution. These optimal shapes then supplied a slate of contact points for a multi-load multi-layer mass minimization problem, subject to compliance constraints, which created a wheel-barrow system. Finally, the shape and topology regimes were optimized simultaneously, in an integrated multidisciplinary design optimization (MDO) framework. In all cases, analytically-derived sensitivities were supplied to the Method of Moving Asymptotes (MMA) optimizer routine.
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