Optimal rib design method for exhaust components

Data processing: structural design – modeling – simulation – and em – Modeling by mathematical expression

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C703S007000

Reexamination Certificate

active

06931367

ABSTRACT:
A method is provided for designing deformations that will achieve an optimum reduction in vibration related noise in an exhaust system component. The method entails defining an initial shape for an exhaust system component based on available space and exhaust flow characteristics. The shape is converted to a mesh having a plurality of interconnected grids. The mesh then is deformed to define an optimal theoretical configuration for the exhaust system component that will eliminate at least selected natural frequencies. The resulting shape then is converted to a plurality of small flat surfaces that intersect, and a point cloud is created from the array of small flat intersecting surfaces of the optimal theoretical exhaust system component. The point cloud is employed to smooth out intersecting surfaces and to achieve an optimal manufacturable configuration for the exhaust system component.

REFERENCES:
patent: 4516657 (1985-05-01), Allard
patent: 4909348 (1990-03-01), Harwood et al.
patent: 5768156 (1998-06-01), Tautges et al.
patent: 5905502 (1999-05-01), Deering
patent: 5949989 (1999-09-01), Falkowski et al.
patent: 6090147 (2000-07-01), Bremner et al.
patent: 6554099 (2003-04-01), Uegane
patent: 6668206 (2003-12-01), Akaike et al.
patent: 2001/0018995 (2001-09-01), Uegane
patent: 2001/0035155 (2001-11-01), Uegane et al.
patent: 2002/0061110 (2002-05-01), Kobayashi
patent: 2002/0088667 (2002-07-01), Naito
patent: 2003/0211020 (2003-11-01), Rao et al.
patent: 2004/0050618 (2004-03-01), Marocco
Xitian (steve) Fang, Ciray Sam, “Dynamic Analysis & Correlation for Exhaust System”, Sep. 22, 2000, PDF file, pp. 1-9.
Jianbing Huang and Chia-Hsiang Menq, “Automatic Data Segmentation for geometric Feature Extraction From Unorganized 3-D Coordinate Points”, IEEE Transactions, vol. 17, No. 3, Jun. 2001, pp. 268-279.
Ahmed El-Bahrawy, Mattias Nystrom, “Automated Integrated finite Element Analysis Using MSC.Nastran and SDRC/I-DEAS”, Lulea University of Technology Volvo Car Corporation, Sep. 22, 2000.
O.Bailly, C.Buchou, A. Floch and L. Sainsaulieu, “Simulation of the Intake and Compression Strokes of a Motored 4-Valve Sl Engine with a Finite Element Code” Oil & Science and Technology-Rev. IFP, vol. 54 (1999), No. 2, pp. 161-168, Editions Technip.
Hisashi Sano, toshio Inoue, Akira Takahashi, Kenichi Terai, and Yoshio Nakamura, “Active Control System for Low-Frequency Road Noise Combined with an Audio System”, IEEE Transactions, vol. 9, No. 7, Oct. 2001, pp. 755-763.
Myer Kutz, “Mechanical Engineers Handbook”, Copyright 1998 by John Wiley & Sons, pp. 276-285, and pp. 311-318.
Don D. Davis, Jr. George M. Stokes Dewey Moore George L. Stevens, Jr., “Theoretical and experimental Investigation of Mufflers with Comment on Engine-Exhaust Muffler Design”, 1954, pp. 1-6.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Optimal rib design method for exhaust components does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optimal rib design method for exhaust components, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optimal rib design method for exhaust components will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3448842

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.