This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Substrate Failure Prediction During the Converter Canning Process
Technical Paper
2004-01-1134
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
In the analysis of the converter canning process, there have been a lot of progresses in stress prediction for the converter shell and mat pressure. However, stress prediction for the substrate, which is the most critical for the converter durability, has been less studied in the finite element analysis approach.
Substrate is made of a lot of cell structure with thin walls. Ideally, it is preferred to mesh the every single wall with solid elements to have a better analysis prediction. However, due to the limited computer resources, it is difficult to create it with detail model because it needs a lot of elements.
In this paper, the stress in the substrate during the canning process for the clamshell and tourniquet type is predicted based on the equivalent orthotropic solid element. A detailed cell for ceramic substrate and coating is modeled with enough solid elements to represent coating fillet radius. A new failure criterion is proposed for the substrate failure and new method is suggested to relate the stress from the equivalent solid element to the stress in the detailed microstructure model. From this method, the stress is evaluated from the cell structure and the possible crack locations for the substrate are predicted by introducing the failure index number.
Recommended Content
Authors
Topic
Citation
Kim, J., "Substrate Failure Prediction During the Converter Canning Process," SAE Technical Paper 2004-01-1134, 2004, https://doi.org/10.4271/2004-01-1134.Also In
Diesel Emissions on CD-ROM from the SAE 2004 World Congress
Number: SP-1835CD; Published: 2004-03-08
Number: SP-1835CD; Published: 2004-03-08
References
- Becker, E. R. Watson, R. J. “Future Trends in Automotive Emission Control” SAE 980413 1998
- Berkman, M. Katari, A. “Transient CFD: How Valuable is it for Catalyst Design?” SAE 010064 2002
- Gulati, S. T. “Physical Durability of Thin Wall Ceramic Substrates” SAE 982635 1998
- Taylor, W. Fuehne, J. Lyon, R. Kim, J. Lee, J. K. “FEA simulation and experimental validation of catalytic converter structural integrity,” SAE 2000-01-0219 2000
- Fuehne, J. Taylor, W. Kim, J. Lee, J. K. “Characterization of catalytic converter mat material for predictive analysis,” SAE 2000-01-0219 2000
- Kim, H. J. Kim, J. S. Walter, M. E. Lee, J. K. “The thermo-mechanical stress-strain response of intumescent mat materials through experiments and strain decompostion,” Journal of strain analysis 2002
- Kim, J. S. “Theories and capabilities of intumescent mat numerical modeling,” SAE 2003-01-0664 2003
- Chen, D.K.S “Mechanical behavior and strength of honeycomb ceramic cellular substrates-A microscopic view” ASME 90-WA/DE-5 1990
- Leonhard, T. Floerchinger, P. “Effect of cell geometry on emissions performance of ceramic catalytic converters” SAE 2002-01-0354 2002
- Gulati, S. T. “Thin Wall Ceramic Catalyst supports” SAE 1999-01-0209 1999
- Gulati, S. T. Leonhard, T. Roe, T. A. “Shear Strength of Cordierite Ceramic Catalyst Supports” SAE 2001-01-0935 2001
- Kim J. S. Walter M. E. Lee J. K. “Modeling mechanical response of intumescent mat material at room temperature” International Journal of Mechanical Sciences 44 2002 2285 2315