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Návrh nápravy pro autonomní elektrický minibus / Axle design for autonomous electric minibusMüller, Viktor January 2020 (has links)
This thesis deals with an axle design for an autonomous minibus. The theoretical part is about axles then the next one goes over the given parameters. Following with a selection of suitable parts for use and designs of parts for production. This chapter is also about geometry and driving characteristics analyzation. The next chapters are devoted to the calculations of the loads on the lower arm, its design and static analysis. The last chapter combines all the parts together into a conceptual design.
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Evaluation of fatigue crack growth software for use on cracks in complex geometriesWilliams, Joshua Marc 02 May 2009 (has links)
Fatigue-crack growth data for the lower arm of the Apache helicopter’s scissor assembly is presented from an Army alternate source qualification test. The lower arm model is imported to finite element analysis software to obtain the stress state at a crack location. The stress state and geometry are used in seven fatigue-crack growth cases in NASGRO and AFGROW, with an additional four cases discussed briefly. The results from the fatigue-crack growth routines are compared to the fatigue-crack growth data from the Army’s test. One case reproduces the crack growth data prior to breakthrough. Some cases are shown to be more applicable to this configuration than others are. The process of performing fatigue life estimates is discussed. Suggestions are made on the viability of this approach and possible future avenues for development.
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