FEA Simulation and Experimental Validation of Catalytic Converter Structural Integrity

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.

• Record URL:
  • https://doi.org/10.4271/2000-01-0219
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Taylor, William
  • Fuehne, Joe
  • Lyon, Richard
  • Kim, Jaesu
  • Lee, J
• Conference:
  • SAE 2000 World Congress
  • Location: Detroit Michigan, United States
  • Date: 2000-3-6 to 2000-3-9
• Publication Date: 2000-3-5

Language

• English

Media Info

• Media Type: Web
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Catalytic converters; Finite element method; Plastics; Simulation
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01795798
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2000-01-0219
• Files: TRIS, SAE
• Created Date: Dec 9 2021 10:18AM