Dynamic Substructures Analysis of Combined Systems "Foundation - Structure - Equipment - Pipelines"

2014 ◽  
Vol 1040 ◽  
pp. 658-663
Author(s):  
Alexandr M. Belostotsky ◽  
Pavel A. Akimov ◽  
Alexey L. Potapenko ◽  
Vladislav V. Vershinin ◽  
Sergey V. Scherbina
Keyword(s):  
Finite Element ◽  
Research And Development ◽  
Dynamic Analysis ◽  
Nuclear Power ◽  
Software Application ◽  
Static And Dynamic Analysis ◽  
Finite Element Software ◽  
Industrial Use ◽  
Certified Software ◽  
Foundation Structure

The present paper is devoted to research and development of methods of advanced static and dynamic analysis of structures, based on application of flexible hierarchical substructure models “foundation – structure – equipment – pipelines”, implemented in certified software application packages, convenient for practical industrial use. Contemporary finite element software application packages (universal – ANSYS, ABAQUS – and self-engineered – STADYO, ASTRA-NOVA products) are used for justification of nuclear power facilities.

A New Approach to the Rigid Finite Element Method in Modeling Spatial Slender Systems

2018 ◽  
Vol 18 (02) ◽  
pp. 1850017 ◽  
Author(s):  
Iwona Adamiec-Wójcik ◽  
Łukasz Drąg ◽  
Stanisław Wojciech
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Analysis ◽  
Equations Of Motion ◽  
Nonlinear Dynamic Analysis ◽  
New Approach ◽  
Static And Dynamic Analysis ◽  
Rigid Finite Element Method ◽  
Longitudinal Flexibility ◽  
Element Method

The static and dynamic analysis of slender systems, which in this paper comprise lines and flexible links of manipulators, requires large deformations to be taken into consideration. This paper presents a modification of the rigid finite element method which enables modeling of such systems to include bending, torsional and longitudinal flexibility. In the formulation used, the elements into which the link is divided have seven DOFs. These describe the position of a chosen point, the extension of the element, and its orientation by means of the Euler angles Z[Formula: see text]Y[Formula: see text]X[Formula: see text]. Elements are connected by means of geometrical constraint equations. A compact algorithm for formulating and integrating the equations of motion is given. Models and programs are verified by comparing the results to those obtained by analytical solution and those from the finite element method. Finally, they are used to solve a benchmark problem encountered in nonlinear dynamic analysis of multibody systems.

The Finite Element Analysis and Comparison of Wind Turbine Tower under Static Wind Load and Fluctuating Wind Load

2013 ◽  
Vol 446-447 ◽  
pp. 733-737
Author(s):  
Chi Chen ◽  
Hao Yuan Chen ◽  
Tian Lu
Keyword(s):  
Finite Element ◽  
Dynamic Analysis ◽  
Wind Turbine ◽  
Modal Analysis ◽  
Large Scale ◽  
Wind Load ◽  
Element Analysis ◽  
Finite Element Software ◽  
Wind Turbine Tower ◽  
Fluctuating Wind

In this paper, a 1.5 MW wind turbine tower in Dali, Yunnan Province is used as the research object, using large-scale finite element software Ansys to carry on the dynamic analysis. These natural frequencies and natural vibration type of the first five of tower are obtained by modal analysis and are compared with natural frequency to determine whether the resonance occurs. Based on the modal analysis, the results of the transient dynamic analysis are obtained from the tower, which is loaded by the static wind load and fluctuating wind load in two different forms. By comparing the different results, it provides the basis for the dynamic design of wind turbine tower.

Modeling and Modal Analysis of Less-Teeth Gear Shaft

2013 ◽  
Vol 385-386 ◽  
pp. 192-195
Author(s):  
Dong Sheng Zhang ◽  
Jian Jun Zhang
Keyword(s):  
Finite Element ◽  
Dynamic Analysis ◽  
Modal Analysis ◽  
Helix Angle ◽  
Mode Shapes ◽  
Contact Ratio ◽  
Finite Element Software ◽  
Meshing Characteristics ◽  
Dynamic Meshing ◽  
Ansys Workbench

As the less-teeth gear has the less-teeth, the bigger helix angle and the more contact ratio etc. The research of dynamic meshing characteristics makes focus, and modal analysis is the basis of dynamic analysis. In order to get the modal analysis characteristics: firstly the parametric solid modeling is realized through the software of MATLAB and PRO/E; secondly multistage inherent frequencies and mode shapes are achieved by the finite element software of ANSYS Workbench.

Comparison of Static and Dynamic Analysis on KJYF96/8 Mobile Refuge Chamber

2014 ◽  
Vol 670-671 ◽  
pp. 892-895
Author(s):  
An Ning Zhang ◽  
Yu Ming Gu
Keyword(s):  
Dynamic Analysis ◽  
Static Analysis ◽  
Dynamic Pressure ◽  
External Pressure ◽  
Structure Design ◽  
Weighting Method ◽  
Static And Dynamic Analysis ◽  
Finite Element Software ◽  
Pressure Peak ◽  
The Difference

This paper studied the difference between the static analysis and dynamic analysis on the mobile refuge chamber. The structure strength static analysis of KJYF96/8 mobile refuge chamber was made by the finite element software SolidWorks Simulation and the stress cloud chart and the displacement cloud chart were obtained. The corresponding relation between the dynamic analysis result and the static analysis result was obtained based on the comparison with the result of the dynamic analysis. The results indicate that the values of the max stress and displacement by static analysis with a uniform external pressure of the dynamic pressure peak value are greater than those by dynamic analysis. And the weighting method of static analysis can be used in the coal mine mobile refuge chamber structure design process instead of dynamic analysis.

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