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FEA Simulation and Experimental Validation of Catalytic Converter Structural Integrity
Technical Paper
2000-01-0219
ISSN: 0148-7191, e-ISSN: 2688-3627
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Event:
SAE 2000 World Congress
Language:
English
Abstract
Non-linear FEA models are applied to three different catalytic converters, with the objective of predicting structural parameters such as shell deformation, push-out force, and mounting-system contact pressure under various conditions. The FEA modeling technique uses a novel constitutive model of the intumescent mat material typically found in ceramic-monolith converter designs. The mat constitutive model accounts for reversible and irreversible thermal expansion, allowing for the prediction of the one-way converter deflection observed in hot durability tests. In addition to this mat material model, the FEA methodology accounts for elastic and plastic shell deformation, contact between materials, and a three-dimensional temperature field in the shell and mat. For each of three designs, predictions are presented for converter canning, heat-up, and cool-down (i.e., post-heating) conditions. Measured push-out force and shell deflections are presented alongside the FEA predictions, with good agreement between experimental and computed trends.
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Authors
Citation
Taylor, W., Fuehne, J., Lyon, R., Kim, J. et al., "FEA Simulation and Experimental Validation of Catalytic Converter Structural Integrity," SAE Technical Paper 2000-01-0219, 2000, https://doi.org/10.4271/2000-01-0219.Also In
Advanced Catalysts Substrates and Advanced Converter Packaging
Number: SP-1532; Published: 2000-03-06
Number: SP-1532; Published: 2000-03-06
References
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- Taylor, W “CFD Prediction and Experimental Validation of High-Temperature Thermal Behavior in Catalytic Converters SAE Paper 1999-01-0454
- Muju, S. Sager, R. Snider, B. Catalytic Converter Durability Analysis ASME International Congress Dallas, TX 1997
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- Maret, D. Gulati, S. Lamber, D. “Systems Durability of a Racetrack Converter SAE Paper 912371
- Chen, D.S. “Integrity of an Automotive Catalytic Converter During the Assembly Process” ASME 90-WA/DE-6AC
- Unifrax Corporation Material Data, XPE-series Mat