Vibration Fatigue Analysis of Automotive Bracket

Koo, Jasuk; Choi, Jae-Seock; Jeon, Tae-Ryong

doi:10.4271/2005-08-0200

Cited by 4 publications

(1 citation statement)

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“…Also, it is impossible to perform fatigue analysis when loading conditions are presented in the form of PSD (Power Spectral Density) defined in a frequency domain. In this case, structural response of systems can be computed by using transfer function of target systems and PSD of excitation loads [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Fatigue life evaluation of mechanical components using vibration fatigue analysis technique

Moon

Cho

Yoon³

2011

J Mech Sci Technol

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Unit brackets attached on a cross member and subjected to random loads often fail due to self-vibration. To prevent such failures, it is necessary to understand the fatigue failure mode and to evaluate the fatigue life using test or analysis techniques. The objective of this study is to develop test specifications for components, which are applicable to predict fatigue life at the stage of initial product design, for the unit brackets by using a vibration fatigue technique. For this objective, the necessity of a fatigue analysis considering resonant effect was reviewed. Also, a series of vibration fatigue analyses were carried out by changing the acceleration's direction and magnitude. Then, a methodology was proposed to determine the optimum vibration fatigue test specification of the component, which gives an equivalent failure mode with the vehicle test condition.

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Section: Introductionmentioning

confidence: 99%