This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Numerical Durability Procedure of Drum Brake Shoes Based on Experimental Bench Procedure
Technical Paper
2021-36-0417
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The aim of this paper was the proposal of a numerical procedure for the structural evaluation and durability validation of brake shoes, employing fatigue and finite element softwares that are able to predict the failure locations (and number of cycles to failure) with acceptable accuracy. The software Abaqus was used in the calculation of the stress and strain fields whereas the software fe-safe was employed in the evaluation of fatigue life. Accelerated tests were performed on a bench test that has been designed to match the operating conditions of the vehicles were the brake shoes are assembled.
In those cases where only local plasticity is expected (rather than generalized plasticity) the procedure can somewhat be simplified by running linear elastic finite element analysis (instead of full non-linear), which is often called pseudo-elastic analysis [1]. Then the pseudo stresses and strains are corrected at post-processing time by means of the Neuber’s rule and Ramberg-Osgood equation [2].
The fractographies of the tested components suggest brittle failure mode, which requires a method like SWT (Smith-Watson-Topper) for the mean stress correction [10]. The full brake assembly was considered in the simulations. All the contacts are non-linear and the material of the brake lining is orthotropic.
In the present context experimental life to failure is defined as the arithmetic mean of the failed samples (there were three of them). The numerical and experimental results (in terms of life) differ by no more than 52%, and the failure locations correlate really well.
The developed numerical procedure has shown to be sufficiently accurate to replace the experimental tests. Therefore it can be used in a more comprehensive study where the sensitivity to geometry, material and loads can be investigated.
Authors
Topic
Citation
Nascimento, V. and Teixeira, G., "Numerical Durability Procedure of Drum Brake Shoes Based on Experimental Bench Procedure," SAE Technical Paper 2021-36-0417, 2022, https://doi.org/10.4271/2021-36-0417.Also In
References
- Lee , Yung-Li , Mark E. Barkey , and Hong-Tae Kang Metal fatigue analysis handbook: practical problem-solving techniques for computer-aided engineering Elsevier 2011
- Gadamchetty , Geethanjali , Abhijeet Pandey , and Majnoo Gawture On practical implementation of the Ramberg-Osgood model for FE simulation SAE International Journal of Materials and Manufacturing 9 1 2016 200 205
- DRAPER , J. Modern Metal Fatigue Analysis Warrinton, UK EMAS Publishing 2008
- Milella , Pietro Paolo Fatigue and corrosion in metals Springer Science & Business Media 2012
- Van , Ky Dang , and Ioannis V. Paradopoulos High-cycle metal fatigue: from theory to applications 392 Springer 2014
- Smith , K. et al. A stress-strain function for the fatigue of metals Journal of materials 5 1970 767 778
- Castro , J.T.P. , and Meggiolaro M.A. 2016
- Nascimento , V. and Teixeira , G. Validation of a numerical procedure for fatigue assessment of a 325mm brake shoe SAE Technical Paper 2019-36-0004 2019 10.4271/2019-36-0004
- 2015
- Nicholas , Theodore High cycle fatigue: a mechanics of materials perspective Elsevier 2006
- DuQuesnay , D.L. , et al. Fatigue evaluation of a nodular cast iron component SAE Technical Paper 1992
- Brown , M. W. , and K. J. Miller A theory for fatigue failure under multiaxial stress-strain conditions Proceedings of the Institution of Mechanical engineers 187 1 1973 745 755
- Fatemi , Ali , and Darrell F. Socie A critical plane approach to multiaxial fatigue damage including out-of-phase loading Fatigue & Fracture of Engineering Materials & Structures 11 3 1988 149 165