The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 26, 2019
Filed:
Apr. 27, 2016
Hitachi, Ltd., Chiyoda-ku, Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
A problem of the present invention is to provide a vibration analysis program capable of analyzing bidirectional exchanges between a distribution amount and a difference amount with respect to an external system of the part in a part modeled as a finite element, in which the difference amount accumulation characteristic and the distribution amount accumulation characteristic are distributed. A vibration analysis program of the present invention includes a first stepof importing a finite element model of a target part modeled by a finite element method programto calculate an accumulation characteristic matrix and connection matrix, a second stepof calculating a difference amount-distribution amount mode matrix and eigenvectors after inputtingan attenuation characteristic to the accumulation characteristic matrix or the connection matrix as necessary, and a third stepof importing an input difference amount-flow amount vector to a target part obtained from an external system simulator, performing a mode coordinate transformation of the input difference amount-flow amount vector, calculating the mode vector response, and performing physical coordinate transformation of mode vector.