Abstract
This paper aims for generating an equivalent load signal for the durability analysis of a heavy-duty vehicle using a signal processing technique. Durability analysis is an essential part in the early stages of development. For a reliable durability assessment, an equivalent load signal representing load events that a real vehicle will experience should be clearly identified. In addition, due to the limited computational resources, the equivalent load signal must be of much shorter time duration and should satisfy statistical properties and fatigue damage with respect to the measured load data. The proposed method consists of data conversion from the original responses, data refinement and representative segment selection based on damage and statistical properties, and equivalent load generation based on a time-correlated damage editing method and a representative frequency band components method. By incorporating these steps into one framework, the equivalent load data could be generated automatically with minimum user interaction. The fatigue lives according to TCDE and RFBC signals show an average difference of 14.2 % and 43.6 % compared to the test life, respectively. The effectiveness and accuracy of the proposed techniques are demonstrated by comparing analytic fatigue lives with those of the durability test.
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References
Anthes, R. J. (1997). Modified rainflow counting keeping the load sequence. Int. J. Fatigue 19, 7, 529–535.
Awate, C. M. and Dodds, C. J. (2007). Methodology to derive reliable laboratory tests using limited service load data. SAE Paper No. 2007-01-1646.
Benasciutti, D. and Tovo, R. (2005). Spectral methods for lifetime prediction under wide-band stationary random processes. Int. J. Fatigue 27, 8, 867–877.
Benasciutti, D. and Tovo, R. (2006). Fatigue life assessment in non-Gaussian random loading. Int. J. Fatigue 28, 7, 733–746.
Bishop, N. W. M. (1994). Spectral methods for estimating the integrity of structural components subjected to random loading. Handbook of Fatigue Crack Propagation in Metallic Structures (pp. 1685–1720). Elsevier Science. Amsterdam, The Netherlands.
Charles, D. (1993). Derivation of environments descriptions and test severities from measured road transportation data. J. IES 36, 1, 37–42.
Cheng, FL, Tao, J., Chen, X. and Jiang, Y. (2014). A spectral method to estimate fatigue life under broadband and non-Gaussian random vibration loading. J. Vibroengineering 16, 2, 596–607.
Dowling, N. E. (1971). Fatigue Failure Predictions for Complicated Stress-Strain Histories. Ph. D. Dissertation. University of Illinois, Champaign, IL, USA.
Halfpenny, A. (2006). Methods for accelerating dynamic durability tests. Proc. 9th Int. Conf. Recent Advances in Structural Dynamics (RASD), Southampton, UK.
Halfpenny, A. and Kihm, F. (2006). Mission profiling and test synthesis based on fatigue damage spectrum. Proc. 9th Int. Fatigue Cong., Atlanta, USA.
Johannesson, P. (2006). Extrapolation of load histories and spectra. Fatigue and Fracture of Engineering Materials and Structures 29, 3, 209–217.
Johannesson, P. and Speckert, M. (2013). Guide to Load Analysis for Durability in Vehicle Engineering. John Wiley & Sons. Chichester, UK.
Kim, J., Kim, M., Joo, S. G., Heo, S. P. and Yoo, Y. (2014). Development of virtual road wheel input forces for belgian ground. SAE Int. J. Passenger Cars-Mechanical Systems 7, 1, 125–131.
Lee, Y. L., Barkey, M. E. and Kang, H. T. (2011). Metal Fatigue Analysis Handbook: Practical Problem-Solving Techniques for Computer-Aided Engineering. Elsevier. Oxford, UK.
Londhe, A., Kangde, S. and Karthikeyan, K. (2012). Deriving the compressed accelerated test cycle from measured road load data. SAE Paper No. 2012-01-0063.
Miles, J. W. (1994). On structural fatigue under random loading. J. Aeronautical Sciences 21, 11, 753–762.
Newland, D. E. (2005). An Introduction to Random Vibrations, Spectral & Wavelet Analysis. 3rd edn. Dover Publications. Mineola, NY, USA.
Rychlik, I. (1987). A new definition of the rainflow cycle counting method. Int. J. Fatigue 9, 2, 119–121.
Stephens, R. I., Fatemi, A., Stephens, R. R. and Fuchs, H. O. (2000). Metal Fatigue in Engineering. 2nd edn. John Wiley & Sons. NewYork, NY, USA.
Su, H. (2014). A road load data processing technique for durability optimization of automotive products. SAE Int. J. Passenger Cars-Mechanical Systems 7, 1, 244–259.
Su, H., Kempf, J., Montgomery, B. and Grimes, R. (2005). CAE virtual test of air intake manifolds using coupled vibration and pressure pulsation loads. SAE Trans., 953–961.
Suh, K. and Yoon, H. (2018). Durability evaluation of the airlift provision for Korean light tactical vehicles based on fatigue test modes. J. Mechanical Science and Technology 32, 3, 1219–1225.
Tovo, R. (2002). Cycle distribution and fatigue damage under broad-band random loading. Int. J. Fatigue 24, 11, 1137–1147.
Xiong, J. J. and Shenoi, R. A. (2008). A load history generation approach for full-scale accelerated fatigue tests. Engineering Fracture Mechanics 75, 10, 3226–3243.
Zhang, J., Lu, J., Han, W. and Li, H. (2019). Program load spectrum compilation for accelerated life test of parabolic leaf spring. Int. J. Automotive Technology 20, 2, 337–347.
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Jung, H., Suh, K. Equivalent Load Generation from Vehicle RLDA Data Using Time-Correlated Damage Editing and Representative Frequency Band Components Methods. Int.J Automot. Technol. 23, 1109–1115 (2022). https://doi.org/10.1007/s12239-022-0097-8
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DOI: https://doi.org/10.1007/s12239-022-0097-8