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Development of a Finite Element Program for Determining Mat Pressure in the Canning Process for a Catalytic Converter

촉매변환기를 캐닝할 때 발생하는 매트의 압력분포 유한요소해석 프로그램의 개발

  • Received : 2011.06.21
  • Accepted : 2011.09.21
  • Published : 2011.11.01

Abstract

The catalytic converter in the front part of an automobile's exhaust system converts toxic exhaust gas into nontoxic gas. The substrate in the central part of the converter has a circular or oval-shaped cross section and fine lattice-shaped walls. In the canning process, the substrate is wrapped in mats and inserted into a can. During this process, mat pressure is induced, which may cause brittle fracturing in the substrate. In this paper, a finite element program for determining the mat pressure distribution was developed to avoid these fractures. The program was created in Microsoft EXCEL, so the input and output procedures are relatively simple. It was assumed that the substrate is rigid, the mat is material nonlinear, and the can is linear elastic. The can is modeled as a beam element to resist both bending and uniform tension/compression. The number of elements is fixed to 35, and the number of iterations, to 20. The solutions are compared to ABAQUS solutions and found to be in good agreement.

Keywords

Catalytic Converter;Substrate;Mat;Can;Hyperfoam;Finite Element Analysis

References

  1. Park, Y. C., 1995, "A Study On The Improved Design for Automotive Catalytic Converter," KSAE, Vol. 3, No. 5, pp. 135-142.
  2. Kyoung, W. M., 2002, "Intumescent Mat Modeling for the Pressure Distribution Prediction of the Catalytic Converter System," KSME Materials and Fracture Proceeding, pp. 295-392.
  3. Baek, S. H. and Cho, S. S.,"Comparison of Experimental and Numerical Analysis for Ductility Design Criteria in Ceramic Catalyst Substrate," KSPE, Vol. 27, No. 9, pp. 58-66.
  4. Chu, S. J., 2005, Finite Element Analysis Using Microsoft EXCEL, UOU Press,
  5. ABAQUS 6.10 Benchmarks Manual 3.1.5.
  6. ABAQUS 6.10 Keywords Reference Manual.

Cited by

  1. Development of Program for Predicting GBD to Improve Canning Process Capability for Catalytic Converter vol.37, pp.3, 2013, https://doi.org/10.3795/KSME-A.2013.37.3.419