This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Simultaneous Durability Assessment and Relative Random Analysis Under Base Shake Loading Conditions
Technical Paper
2017-01-0339
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
For many automotive systems it is required to calculate both the durability performance of the part and to rule out the possibility of collision of individual components during severe base shake vibration conditions.
Advanced frequency domain methods now exist to enable the durability assessment to be undertaken fully in the frequency domain and utilizing the most advanced and efficient analysis tools (refs 1, 2, 3, 4, 5). In recent years new capabilities have been developed which allow hyper-sized models with multiple correlated loadcases to be processed. The most advanced stress processing (eg, complex von-Mises) and fatigue algorithms (eg, Strain-Life) are now included. Furthermore, the previously required assumptions that the loading be stationary, Gaussian and random have been somewhat relaxed. For example, mixed loading like sine on random can now be applied.
The check for “collisions” has previously been done separately with the resultant “doubling up” of the analysis being both time consuming and cumbersome.
However, new technological advances now make it possible to do both these calculations at the same time and this paper will present results for an exhaust model analyzed using NASTRAN. The fatigue and random response assessment will be done using a new feature in the CAEfatigue VIBRATION (CFV) analysis toolkit (ref 6).
Recommended Content
Authors
Citation
Datta, S., Bishop, N., Sweitzer, K., and Atkins, A., "Simultaneous Durability Assessment and Relative Random Analysis Under Base Shake Loading Conditions," SAE Technical Paper 2017-01-0339, 2017, https://doi.org/10.4271/2017-01-0339.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 | ||
Unnamed Dataset 4 | ||
Unnamed Dataset 5 | ||
Unnamed Dataset 6 | ||
Unnamed Dataset 7 |
Also In
References
- Thesing , T. and Bishop , N. Modern Methods for Random Fatigue of Automotive Parts SAE Technical Paper 2016-01-0372 2016 10.4271/2016-01-0372
- Ferreira , W. , Meehan , T. , Cardoso , V. , and Bishop , N. A Comparative Study of Automotive System Fatigue Models Processed in the Time and Frequency Domain SAE Technical Paper 2016-01-0377 2016 10.4271/2016-01-0377
- Bishop , N. , Murthy , P. , Sweitzer , K. , and Kerr , S. Time vs Frequency Domain Analysis for Large Automotive Systems SAE Technical Paper 2015-01-0535 2015 10.4271/2015-01-0535
- Bishop , N. , Kerr , S. , Murthy , P. , and Sweitzer , K. Advances Relating to Fatigue Calculations for Combined Random and Deterministic Loads SAE Technical Paper 2014-01-0725 2014 10.4271/2014-01-0725
- Bishop , N. , Murthy P. , and Sweitzer , K. Advances Relating To Fatigue Calculations For Combined Random and Deterministic Loads 13th International ASTM/ESIS Symposium on Fatigue and Fracture Mechanics (39th National Symposium on Fatigue and Fracture Mechanics) Nov 13-15, 2013 Jacksonville, FL
- CAEfatigue VIBRATION (CFV) User Guide & Verification Manual (Release 3.0) CAEfatigue Limited UK Nov 2016
- Bishop , N , Sherratt , F Fatigue life prediction from power spectral density data. Part 1, traditional approaches and Part 2, recent developments Env. Eng. 2 1989
- Bishop , N.W.M , Sherratt , F. Finite Element Based Fatigue Calculations NAFEMS 2000
- MIL-STD-810G Department of Defence Test Standard Method, Environmental Engineering Consoderations and Laboratory Tests 31 st Oct 2008
- SAE Fatigue Design Handbook Third Warrendale Society of Automotive Engineers, Inc. 1997 978-1-56091-917-9
- Dowling , N. Mean Stress Effects in Stress-Life and Strain-Life Fatigue SAE Technical Paper 2004-01-2227 2004 10.4271/2004-01-2227
- Conle , F. Durability Analysis Under Complex Multiaxial Loading SAE Technical Paper 871969 1987 10.4271/871969
- Conle A. Computer-based prediction of cyclic deformation and fatigue behavior In Low Cycle Fatigue, ASTM STP 942 1218 1236 1988
- Conle F. A. and Mousseau C. W. Using vehicle dynamics simulations and finite-element results to generate fatigue life contours for chassis components International Journal of Fatigue 3 195 205 1991
- Conle F. A. and Chu Chin-Chan Fatigue analysis and the local stress-strain approach in complex vehicular structures International Journal of Fatigue 19 1 317 323 1997
- Metallic Materials Properties Development and Standardization (MMPDS) DOT/FAA/AR-MMPDS-01 January 2003
- Lee , Y.-L. , Barkey , M.E. , Kang , H.-T. Metal Fatigue Analysis Handbook. Practical Problem-Solving Techniques for Computer-Aided Engineering Butterworth-Heinemann, Elsevier USA 2012
- Sweitzer , K. A. , Bishop , N. W. M. , and Genberg , V. L. Efficient computation of spectral moments for determination of random response statistics International Conference on Noise and Vibration Engineering - ISMA Leuven, BE 2004
- Bendat , JS Probability functions for random responses NASA report on contract NAS-5-4590 1964
- Newland , D.E. Mechanical Vibrations Analysis and Computation Dover Publications 3 rd 2006
- Craig , R. R , Kurdila , A. J. Fundamentals of Structural Dynamics Wiley 2 nd 2006
- Rice , SO Mathematical analysis of random noise Selected papers on noise and stochastic processes Dover, New York 1954
- Karadeniz , H. Stochastic Analysis of Offshore Steel Structures Springer Series in Reliability Engineering Springer-Verlag London 2013 10.1007/978-1-84996-190-5_2
- Maymon , G. Structural Dynamics and Probabilistic Analysis for Engineers Butterworth-Heinemann 2008
- Clough , R.W. , and Penzien. J. 1993 Dynamics of Structures 2 nd New York, NY McGraw-Hill Inc