ScholarLens Back to search
2011•Zhendong yu chongjiRequires access

A test modal iterative method

Luo Yin-miao

Open publisher page 1 citations

Abstract

Matrix iteration is a kind of classic technique for obtaining modal shapes,it is used in FEM software or other numerical analyses.Here,it was extended into the field of test modal technique and a test modal iterative method was presented.Excitation force was introduced by using an assumed modal shape and a steady response was excited.Through several adjustings and iterations the modal shapes of a structure were obtained.This test modal iterative method was compeletely different from the current structureal resonance tests to get modal shapes.The amplitude and phase of actuators were adjusted simultaneously with the proposed method and less test time was needed.Modal shape's purity was related with resonance frequency test precision only.The test complexity was independent on the number of actuators.This technique could reduce excitation force adjusting work greatly.

About this research paper

What this paper is about

Matrix iteration is a kind of classic technique for obtaining modal shapes,it is used in FEM software or other numerical analyses.Here,it was extended into the field of test modal technique and a test modal iterative method was presented.Excitation force was introduced by using an assumed modal shape and a steady response was excited.Through several adjustings and iterations the modal shapes of a structure were obtained.This test modal iterative method was compeletely different from the current structureal resonance tests to get modal shapes.The amplitude and phase of actuators were adjusted simultaneously with the proposed method and less test time was needed.Modal shape's purity was related with resonance frequency test precision only.The test complexity was independent on the number of actuators.This technique could reduce excitation force adjusting work greatly.

Why it matters

OpenAlex reports 1 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Matrix iteration is a kind of classic technique for obtaining modal shapes,it is used in FEM software or other numerical analyses.Here,it was extended into the field of test modal technique and a test modal iterative method was presented.Excitation force was introduced by using an assumed modal shape and a steady response was excited.Through several adjustings and iterations the modal shapes of a structure were obtained.This test modal iterative method was compeletely different from the current structureal resonance tests to get modal shapes.The amplitude and phase of actuators were adjusted simultaneously with the proposed method and less test time was needed.Modal shape's purity was related with resonance frequency test precision only.The test complexity was independent on the number of actuators.This technique could reduce excitation force adjusting work greatly.

Key concepts: Modal analysis using FEM, Modal testing, Modal, Modal analysis, Iterative method, Finite element method, Excitation, Actuator

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
A test modal iterative method — Research Paper | ScholarLens