Finite Element Analysis of Laser Welding Induced Alignment Distortion During Pigtail of Pump Lasers

2003 ◽  
Author(s):  
M. Labudovic ◽  
M. Cook
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Laser Beam ◽  
Laser Welding ◽  
Beam Energy ◽  
Element Model ◽  
Element Analysis ◽  
3D Finite Element ◽  
Energy Delivery ◽  
Pump Lasers

Laser Welding Induced Alignment Distortion (WIAD) during pigtailing of pump lasers has been numerically modeled and studied experimentally. The results demonstrate that the WIAD can be minimized by properly controlling the laser beam energy delivery. A 3D finite element model has been developed for effectively predicting the WIAD.

Multiphasic Finite Element Analysis of Physical Signals and Solute Transport in the Human Intervertebral Disc

2004 ◽  
Author(s):  
Hai Yao ◽  
Wei Yong Gu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Soft Tissue ◽  
Intervertebral Disc ◽  
Mixture Theory ◽  
Element Model ◽  
Tissue Composition ◽  
Element Analysis ◽  
3D Finite Element ◽  
Disc Nutrition

A 3D finite element model for charged hydrated soft tissue containing charged/uncharged solutes was developed based on the multi-phasic mechano-electrochemical mixture theory [1–2]. This model was applied to analyze the mechanical, chemical and electrical signals within the human intervertebral disc under mechanical loading. The effects of tissue composition and material property on the physical signals and the transport of fluid, ions and nutrients were investigated. This study is important for understanding disc biomechanics, disc nutrition and disc mechanobiology.

Finite Element Analysis and Validation of the Superplastic Forming of Multi-Sheet Structures

2016 ◽  
Vol 838-839 ◽  
pp. 621-626 ◽  
Author(s):  
Pamela Anderson
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Inner Core ◽  
Superplastic Forming ◽  
Element Model ◽  
Element Analysis ◽  
3D Finite Element ◽  
Sheet Structure ◽  
Pressure Cycle ◽  
3D Scans

This paper outlines the methods used to develop a full 3D Finite Element Model (FEM) capable of accurately predicting the superplastic forming (SPF) process of a complex multi-sheet structure. The geometry studied is a three-sheet pack consisting of an inner core sheet diffusion bonded in particular locations to two outer sheets to create a hollow internal structure when inflated. The pressure cycle implemented in the model is also used on the AFRC’s 200T press to produce parts which are compared to the model results. Comparison of 3D scans of the parts with the predicted process from the analysis reveals favorable results.

3D Finite Element Analysis and Full-Scale Testing of a Self-Anchored Suspension Bridge

2014 ◽  
Vol 530-531 ◽  
pp. 251-255
Author(s):  
Jian Rong Yang ◽  
Yu Bai ◽  
Xiao Dong Yang ◽  
Wei Ming Zhu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Suspension Bridge ◽  
Field Testing ◽  
Element Model ◽  
Full Scale ◽  
Three Dimension ◽  
Element Analysis ◽  
3D Finite Element ◽  
Full Scale Testing

Three dimension finite element analysis and full-scale testing are carried out on a newly-built self-anchored suspension bridge. The 3D finite element model of the bridge is generated using a commercially available finite element package. The bridge is modeled under service loads, and the model results are compared to the results of field testing of the structure. Detailed experimental procedure is presented including the data acquisition system, testing truck, and the load distribution. Measured and calculated displacements are in reasonable concordance. And residual deformations meet the specification of the codes, no cracking opening.

Three Dimensional Structural Analysis of Complex Sluice Chamber Structures

2012 ◽  
Vol 170-173 ◽  
pp. 1971-1976
Author(s):  
Hong Yun Si ◽  
Min Chen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Element Analysis ◽  
3D Finite Element ◽  
Massive Structure ◽  
Floor Structure ◽  
The Finite Element Model ◽  
Better Than

This paper mainly introduces how to use the software of Marc to calculate the displacement and stress of the sluice. The finite element model which concludes the sluice, piles and foundation was structured for calculation and analysis using the contact analysis function provided by the program. the displacement and stress of the massive structure was worked out to estimate its whole stability and evaluate workability state of the sluice under different structures. The example shows that the results of 3D finite element analysis can be used to accurately reflect the state of the buildings overall strength and displacement. The integral floor structure of contrary arch floor sluice is better than the separated floor structure to adapt to the foundation uneven settlement, but the separated floor structure of contrary arch floor sluice makes stress form more reasonable.

Finite Element Analysis of Nonuniformity of Tires with Imperfections5

2007 ◽  
Vol 35 (3) ◽  
pp. 226-238 ◽  
Author(s):  
K. M. Jeong ◽  
K. W. Kim ◽  
H. G. Beom ◽  
J. U. Park
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Radial Force ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Dimensional Finite Element ◽  
Force Variation ◽  
Three Dimensional Finite Element

Abstract The effects of variations in stiffness and geometry on the nonuniformity of tires are investigated by using the finite element analysis. In order to evaluate tire uniformity, a three-dimensional finite element model of the tire with imperfections is developed. This paper considers how imperfections, such as variations in stiffness or geometry and run-out, contribute to detrimental effects on tire nonuniformity. It is found that the radial force variation of a tire with imperfections depends strongly on the geometrical variations of the tire.

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