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Development of New Pre-processor for Car Body Analysis

Article of Honda R&D Technical Review Vol.14 No.1

Summary

A new pre-processor was developed to shorten the finite element modeling process while improving calculation accuracy for car body analysis. The new pre-processor made it possible to create high quality models efficiently in a short time regardless of the skills and experience of the modeler. This was achieved by automatically identifying and correcting penetration and intersection between elements after division of a body in white into shell elements, automatically analyzing and converting spotwelds and other connection data into finite element data, assigning accurate material properties, automatically adding mass and incorporating dummies and barriers by compiling a material property, parts and mass database. In addition, the pre-processor was also given simple shape modification functions allowing model changes to be made in a short time when investigating specifications.

Reference

(1) Shimada K.: Physically-based mesh generation: automated triangulation of surfaces and volumes, Ph.D. Thesis, Massachusetts Institute of Technology, USA (1993)
(2) Shimada K., Liad JH., Itoh T.: Quadrilateral meshing with directionality control through the packing of square cells, Proceedings of the 7th International Meshing Roundtable, p. 61–75 (1998)
(3) Inoue K., Itoh T., Yamada A., Furuhata T., Shimada K.: Face clustering of a large-scale CAD model for surface mesh generation, Computer-Aided Design 22, p. 251–261 (2001)
(4) Fujitani K., Present Status and Future Scope for Simulation in Car Development, JOURNAL OF SOCIETY OF AUTOMOTIVE ENGINEERS OF JAPAN, Vol. 55, No. 6, p. 4–8 (2001)
(5) RADIOSS-CRASH VERSION 4.2 MANUAL (2000), MECALOG JAPAN K. K.
(6) RADIOSS ENVIRONMENT EXAMPLE GUIDELINE VERSION 4.1 (1999), MECALOG JAPAN K. K.

Author (organization or company)

Fumio NAKANO(Tochigi R&D Center)、Atsushi IWAMOTO(Tochigi R&D Center)、Kenji TAKADA(Tochigi R&D Center)、Norikazu MATSUURA(Tochigi R&D Center)

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