Indirect Inverse Substructuring Theory for Coupling Dynamic Stiffness Identification of Complex Interface Between Packaged Product and Vehicle Transport System

2014 ◽  
Vol 28 (2) ◽  
pp. 141-155 ◽  
Author(s):  
Jun Wang ◽  
Guohua Sun ◽  
Lixin Lu ◽  
Teik C. Lim
Keyword(s):  
Transport System ◽  
Dynamic Stiffness ◽  
Stiffness Identification ◽  
Coupling Dynamic

scholarly journals Indirect Inverse Substructuring Method for Multibody Product Transport System with Rigid and Flexible Coupling

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Jun Wang ◽  
Li-xin Lu ◽  
Pengjiang Qian ◽  
Li-qiang Huang ◽  
Yan Hua ◽  
...  
Keyword(s):  
Transport System ◽  
Dynamic Equilibrium ◽  
Dynamic Stiffness ◽  
Measuring System ◽  
System Level ◽  
Lumped Mass ◽  
Component Level ◽  
Flexible Coupling ◽  
Coupling Dynamic ◽  
Mass Spring

The aim of this paper is to develop a new frequency response function- (FRF-) based indirect inverse substructuring method without measuring system-level FRFs in the coupling DOFs for the analysis of the dynamic characteristics of a three-substructure coupled product transport system with rigid and flexible coupling. By enforcing the dynamic equilibrium conditions at the coupling coordinates and the displacement compatibility conditions, a closed-form analytical solution to inverse substructuring analysis of multisubstructure coupled product transport system is derived based on the relationship of easy-to-monitor component-level FRFs and the system-level FRFs at the coupling coordinates. The proposed method is validated by a lumped mass-spring-damper model, and the predicted coupling dynamic stiffness is compared with the direct computation, showing exact agreement. The method developed offers an approach to predict the unknown coupling dynamic stiffness from measured FRFs purely. The suggested method may help to obtain the main controlling factors and contributions from the various structure-borne paths for product transport system.

Verification on Indirect Inverse Substructuring Method for Coupling Dynamic Stiffness Identification of a Mechanical Assembly

2012 ◽  
Vol 562-564 ◽  
pp. 552-555
Author(s):  
Guang Qing Lu ◽  
Dong Mei Pang ◽  
Kui Dong ◽  
Bin Zhou ◽  
Xian Neng Li
Keyword(s):  
Experimental Verification ◽  
Dynamic Stiffness ◽  
Simple Approach ◽  
Response Functions ◽  
Mechanical Assembly ◽  
Testing Data ◽  
Coupling Dynamic ◽  
Dynamic Quality ◽  
Product Assembly

Indirect inverse substructuring dynamic analysis has been developed recently by the author of this paper and provides a new simple approach to determine the coupling dynamic stiffness, which is one of important characteristics estimating dynamic quality of a mechanical product assembly. Based on a physical model consisting of “8-mass plus 16-spring and 8-damping” elements, this paper provides a set of validation on the completeness and effectiveness of the approach. Experimental verification is also carried out by use of eighty testing data of frequency response functions (FRFs).

A hybrid method for dynamic stiffness identification of bearing joint of high speed spindles

2016 ◽  
Vol 57 (1) ◽  
pp. 141-159 ◽  
Author(s):  
Yongsheng Zhao ◽  
Bingbing Zhang ◽  
Guoping An ◽  
Zhifeng Liu ◽  
Ligang Cai
Keyword(s):  
Hybrid Method ◽  
High Speed ◽  
Dynamic Stiffness ◽  
Stiffness Identification

Dynamic Stiffness Identification of Bolted Joints

2011 ◽  
Vol 291-294 ◽  
pp. 1582-1588
Author(s):  
Tie Neng Guo ◽  
Bin Song ◽  
Dong Liang Guo ◽  
Zhong Qing Chen
Keyword(s):  
Dynamic Characteristic ◽  
Dynamic Stiffness ◽  
Dynamic Parameter ◽  
High Accuracy ◽  
Bolted Joints ◽  
Small Discrepancy ◽  
Identification Method ◽  
Stiffness Identification ◽  
Accuracy Result ◽  
The Relationship

The joint has a significant effect on the dynamic characteristic of the mechanism, and the identification of the stiffness of the joints has become a key problem. In this paper, a method is presented for identifying the dynamic characteristic of joints. An experiment is designed to test the dynamic parameter of the bolted joints specimen; the identification method, based on experiment, has a high accuracy result. By taking a specimen to experiment and identify the dynamic characteristic of joints, the relationship between the preload on the bolts and the joints stiffness is acquired. In order to validate the accuracy of the result, the FEM software is used to simulate. There are only a small discrepancy between the results of identification and simulation.

scholarly journals Dynamic Stiffness Identification of Portal Frame Bridge–Soil System using Controlled Dynamic Testing

2017 ◽  
Vol 199 ◽  
pp. 1062-1067 ◽  
Author(s):  
Abbas Zangeneh ◽  
Christoffer Svedholm ◽  
Andreas Andersson ◽  
Costin Pacoste ◽  
Raid Karoumi
Keyword(s):  
Dynamic Testing ◽  
Dynamic Stiffness ◽  
Soil System ◽  
Stiffness Identification ◽  
Portal Frame

Error Effects on Identifying Coupling Dynamic Stiffness of a Mechanical Assembly by Indirect Inverse Substructuring Dynamic Analysis

2012 ◽  
Vol 562-564 ◽  
pp. 556-559 ◽  
Author(s):  
Guang Qing Lu ◽  
Lei Wang ◽  
Kui Dong ◽  
Xin Guang Lu ◽  
Xian Neng Li
Keyword(s):  
Dynamic Analysis ◽  
Frequency Response ◽  
Dynamic Stiffness ◽  
Simple Approach ◽  
Mechanical Assembly ◽  
Mass Model ◽  
Mechanical Assemblies ◽  
Parametric Studies ◽  
Measuring Frequency ◽  
Coupling Dynamic

Indirect inverse substructuring dynamic analysis has been developed recently by the author of this paper and provides a new simple approach to identify the coupling dynamic stiffness of mechanical assemblies. To analyze the error effects of measuring frequency response fuctions (FRFs) on the identification, this study implements a set of parametric studies on basis of a lamped mass model to deal with parametric studies which result in some guidance for applications of the approach.

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