A Coupled Finite Element Analysis Approach Combining In-House and General-Purpose Codes

2019 ◽  
pp. 117-129
Author(s):  
Tomoyoshi Horie ◽  
Tomoya Niho ◽  
Daisuke Ishihara
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
General Purpose ◽  
Analysis Approach ◽  
Element Analysis

Development of Finite Element Analysis Support System Based on the Hybrid Knowledge Model

1992 ◽  
Author(s):  
S. Nagasawa ◽  
H. Sakuta ◽  
M. Goto
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Support System ◽  
System Development ◽  
Object Oriented ◽  
Data Representation ◽  
General Purpose ◽  
Element Analysis ◽  
Intelligent Support ◽  
Hierarchical Representation

Abstract This paper deals with conceptual orientation and system development of intelligent support system for general purpose FEA (finite element analysis) programs. An integrated support system called “InhierTalk” (Integrated interactive environment for hierarchical representation for FEA) has been developed in Smalltalk, an object oriented language, in order to confirm effectivity of hierarchical representation and to establish an optimum method of the system development. Two object-oriented knowledge models which consist of macro visual data representation and micro regularized data representation are proposed. In the development, it is found to be clear that active and passive evaluation methods are effective for construction of support system.

Design Optimization of the Aerial Lift Boom through the Finite-Element Analysis (FEA)

2011 ◽  
Vol 295-297 ◽  
pp. 1564-1567
Author(s):  
Yong Hong ◽  
Seokjun Yu ◽  
Jaejung Lee ◽  
Hyeonsu Ha ◽  
Dong Pyo Hong
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Design Optimization ◽  
Experimental Method ◽  
General Purpose ◽  
Element Analysis ◽  
Actual Experiment ◽  
Multi Stage ◽  
The Finite Element Analysis ◽  
Aerial Platform

The multi-stage boom consisting of several booms is used in order to develop the aerial platform truck that can be used in a working radius that is higher and safe. Because the length increases compared with the width or the height of the structure, the intensity and rigidity are lowered along with the safety. Accordingly, a countermeasure is needed. Therefore, in this research, when designing of the high ground work difference Boom System, the safety the stress of the considered boom the analyze method and experimental method tries to be evaluated through the comparison. The finite-element analysis(FEA) compared the Strain value which is obtained through the resolution value and actual experiment by using the Ansys,that is the general purpose program, and proved this safety.

Study on Wrinkles during Rotary-Draw Bending Forming

2019 ◽  
Vol 943 ◽  
pp. 43-47
Author(s):  
Xia Zhu ◽  
Keiji Ogi ◽  
Nagatoshi Okabe
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Friction Coefficient ◽  
General Purpose ◽  
Straight Tube ◽  
Tube Material ◽  
Rotary Draw Bending ◽  
Element Analysis ◽  
Draw Bending ◽  
Wrinkle Generation

The purpose of this research is to determine the state inside the material using finite-element analysis and to improve the performance of a rotary-draw bending forming by clarifying the mechanism of wrinkle generation. An analytical model of rotational drawing was made by using the general-purpose nonlinear finite-element analysis software MSC Marc, and the analytical results were compared with experimental results to verify the validity of the model. Furthermore, the mechanism of wrinkle generation was investigated. With the progress of processing, wrinkles occur not in the R part but in the original tube-side straight-tube part. The coefficient of friction between the tube material and the R portion of the bending mold promotes the occurrence of wrinkles and the growth of the generated wrinkles. Because wrinkles occur even if the friction coefficient between the tube material and bending mold R part is ignored, the generation condition of wrinkles also depends on parameters other than the friction coefficient.

Unveiling the origin of a nonequilibrium dynamic process detected by X-ray photon correlation spectroscopyviaa finite element analysis approach

2014 ◽  
Vol 70 (4) ◽  
pp. 338-347 ◽  
Author(s):  
Li Ma ◽  
Fan Zhang ◽  
Andrew Allen ◽  
Lyle Levine
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Analysis Approach ◽  
Element Analysis ◽  
Nonequilibrium Processes ◽  
Photon Correlation ◽  
X Ray ◽  
X Ray Scattering ◽  
Nonequilibrium Dynamic ◽  
Ray Scattering

It is a scientific and engineering challenge to characterize materials under nonequilibrium conditions. In recent years, X-ray photon correlation spectroscopy (XPCS), a synchrotron-based coherent X-ray scattering technique, has been found useful in determining the timescales associated with various nonequilibrium processes, with detailed descriptions of the underlying processes lacking. Here, both static ultra small angle X-ray scattering (USAXS) and dynamic USAXS-based XPCS were used to investigate a transient structural change (a nonequilibrium process) associated with an isothermal anneal in a glass polymer composite system. While the bulk USAXS technique lacked the required sensitivity to detect the change in the microstructures, the local structural reorganization was apparent in the XPCS study. The structural changes were modeled using a three-dimensional finite element analysis approach and wave-propagation theory was used to simulate the resulting reciprocal-space coherent scattering intensity. Qualitative agreement was found between the modeling and experimental results, which validates that stress relaxation in the viscous polymer matrix was responsible for the observed changes. This analysis demonstrates that multi-physics modeling of complex systems can be used to interpret XPCS measurements of nonequilibrium processes.

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