This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Integrated Approach for Accelerated Fatigue Testing of Resonating Structures
Technical Paper
2014-01-0821
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The durability evaluation of overhanging components of a vehicle (Ex: horn, radiator) is a challenge to durability engineers as resonance plays an important role in determining their fatigue life. As resonance cannot be avoided always, it is desirable to develop methods to evaluate life of the component in the presence of resonance.
Though the existing vibration test standards suggest test profiles to evaluate resonance failures, there are cases in which, these methods do not yield the proving ground results. This may lead to unnecessary overdesign or unrealistic failures. In such cases it is suggested to generate a sweep endurance test procedure customized to the proving ground or actual roads. This paper studies a methodology for generating a sweep endurance test procedure for evaluation of resonating components.
Responses like stress and accelerations were measured in test components in proving ground. Contribution of each frequency band towards overall damage is determined. An optimized test profile was generated using the proving ground stress data and identified frequency band while retaining the failure modes.
Further, the test profile is simulated using CAE and responses are compared with the responses of rig. Life/Damage in rig and CAE is correlated. This approach can be used to evaluate counter measures in CAE in early stage of development, saving development cost and time.
Same has been explained with case study of canister bracket in this paper.
Recommended Content
Authors
Topic
Citation
KV, S., Sheepri, S., Kandula, K., and Kumar, A., "Integrated Approach for Accelerated Fatigue Testing of Resonating Structures," SAE Technical Paper 2014-01-0821, 2014, https://doi.org/10.4271/2014-01-0821.Also In
References
- Lee Yung-Li , Barkey Mark E. , Kang Hong-Tae Metal Fatigue Analysis Handbook Butterworth-heinemann publications 2012
- Dr. Fischer P , Witteveen W. , Schabasser M. Integrated MBS-FE-Durability analysis of truck frame components by modal stresses ADAMS User Meeting 2000
- Tiwari , S. and Dubey , A. , FEA Based Durability Evaluation of HD Tipper Chassis and Cab Through Correlated Transient and Fatigue Analysis SAE Technical Paper 2011-26-0013 2011 10.4271/2011-26-0013
- MSC/NASTRAN Documentation, Version 2012.2 2012
- Kagnici Fatih Vibration induced fatigue assessment in vehicle development process World Academy of Science, Engineering and Technology 64 2012
- Vellaichamy , S. , Transient Dynamic Fatigue Analysis of Automotive Structures using Proving Ground Road Profiles SAE Technical Paper 2005-01-0514 2005 10.4271/2005-01-0514
- User's guide, MSC/Fatigue 2012