A New Method for Engine Design Using Dynamic Optimization and Substructure Synthesis Method

Format:

Conference/Event

Author/Creator:

Ishikawa, Masanori, author.

Conference Name:

Noise & Vibration Conference & Exposition (1991-05-01 : Traverse City, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1991

Summary:

This paper describes a new method for engine design using dynamic optimization and substructure synthesis method. A very important theme in engine design is how to shift the peak of the natural frequency of the vibration mode that causes some noise and vibration problems. This must be resolved by effective modification of structural design.In order to carry out effectively vibration analysis of a large scaled structure like engine assembly and conduct dynamic optimization with many iterative calculations, we have used substructure synthesis method that devides a whole structure into a number of substructures and solves each substructure.Vibration analysis of engine assembly (cylinder block, crank shaft, bearing caps and flywheel systems) was carried out by using this substructure synthesis method. And, on the basis of the sensitivity of eigen value of the residual structure that is to be modified (cylinder block and bearing caps this time), the optimization program using Pseudo Least Square Method has been successfully applied to shift the peak of a given natural frequency to a designated frequency range

Notes:

Vendor supplied data

Publisher Number:

911065

Access Restriction:

Restricted for use by site license