scholarly journals A Massively Parallel Sparse Eigensolver for Structural Dynamics Finite Element Analysis

10.2172/7019 ◽  
1999 ◽  
Author(s):  
David M. Day ◽  
G.M. Reese
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Structural Dynamics ◽  
Massively Parallel ◽  
Element Analysis

scholarly journals An Evaluation of Material Properties Using EMA and FEM

2016 ◽  
Vol 24 (39) ◽  
pp. 15-22
Author(s):  
Rastislav Ďuriš ◽  
Eva Labašová
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Structural Dynamics ◽  
Material Properties ◽  
Elasticity Modulus ◽  
Natural Frequencies ◽  
Optimization Methods ◽  
Experimental Measurements ◽  
Element Analysis

Abstract The main goal of the paper is the determination of material properties from experimentally measured natural frequencies. A combination of two approaches to structural dynamics testing was applied: the experimental measurements of natural frequencies were performed by Experimental Modal Analysis (EMA) and the numerical simulations, were carried out by Finite Element Analysis (FEA). The optimization methods were used to determine the values of density and elasticity modulus of a specimen based on the experimental results.

Determination of the Optimal Balancing Head Location on Flexible Rotors Using a structural Dynamics Modification Algorithm

1985 ◽  
Vol 199 (1) ◽  
pp. 19-25 ◽  
Author(s):  
Y D Kim ◽  
C W Lee
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Structural Dynamics ◽  
Current Approach ◽  
Optimal Location ◽  
Computational Time ◽  
Rotating Shaft ◽  
Element Analysis ◽  
Flexible Rotors

Bishop (1) proposes an effective way of balancing a flexible rotating shaft using one motorized balancing head. To determine the optimal location of the head and the amount of correction unbalance required, the change in modal properties due to the presence of the balancing head has to be completely examined, which is often laborious and time consuming. In this paper, a simple and effective method to determine the optimal location of the balancing head and the amount of correction unbalance, adopting a structural dynamics modification (SDM) approach, is presented and an example problem is solved. It is shown that the current approach yields results almost as accurate as those obtained by finite element analysis, while computational time and effort are remarkably reduced.

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