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Numerical Analysis of Thermal Stress Distribution in Metal Substrates for Catalytic Converters
Technical Paper
2002-01-0060
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In order to quantitatively evaluate mechanical durability of metal substrates for catalytic converters under heat cycles, thermal stresses and strains were simulated by FEM elastic-plastic analysis. Flat and corrugated sheets constituting honeycomb structures were directly modeled by thick-shell elements without replacing the structures with equivalent solid elements. It was reported that an asymmetric joint structure with “Strengthened Outer Layer” could provide metal substrates with high mechanical durability against heat cycles and the results of analysis in this study could show their high durability. It is important for improvement of mechanical durability to control the location of initial cracks generation and the direction of their propagation.
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Citation
Konya, S., Kasuya, M., Okazaki, Y., Imai, A. et al., "Numerical Analysis of Thermal Stress Distribution in Metal Substrates for Catalytic Converters," SAE Technical Paper 2002-01-0060, 2002, https://doi.org/10.4271/2002-01-0060.Also In
References
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- Takada, T. et al. “Development of a Highly Heat-Resistant Metal Supported Catalyst” SAE 910615 1991
- Reddy, K. P. et al. “High Temperature Durability of Electrically Heated Extruded Metal Support” SAE 940782 1994
- Brück, R. et al. “New Ultra Thin Wall Metal Catalysts for Close-Coupled Applications” SAE 980420 1998