Track Roller and Idler Design Improvement Using DFSS
Mahmoud I.Awad, Adam Ewing, George Sedlak, Tong Yi, Yassir Shanshal, International Journal of Six Sigma and Competitive Advantage, 2009, Volume 5, Issue 1, pp 29-41.
Abstract
Design for Six Sigma has been utilized over the last few decades to deliver more robust products with more functionality and reduced cost. In this article, a case study is presented where a systematic DFSS approach is used to improve the life expectancy of track rollers and idlers for an off-road machine. The approach took advantage of CAE to build an analytical model that predicts stresses imposed on the rollers and idlers. The study investigates the effect of several factors on stresses and concludes by selecting the vital few factors needed for improvement.
How Multibody Dynamics Simulation Technology is Used
Simulation in RecurDyn identified the most significant noise factors that impact forces acting on rotational bearing surfaces. Simulation data was first correlated with machine testing and found to be within 90% agreement. The design was able to be improved within the virtual prototype to reduce forces and thus improve bearing life.
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