Time-Dependent Three-Dimensional Finite-Element Ground Model for Geotechnical Engineering Problems

2000 ◽  
Author(s):  
Joaquin Diaz ◽  
Udo F. Meissner ◽  
Michael Burghardt
Keyword(s):  
Finite Element ◽  
Geotechnical Engineering ◽  
Three Dimensional ◽  
Time Dependent ◽  
Ground Model ◽  
Engineering Problems ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

A Finite Element Analysis of Stress Fields in Vickers Indentation on Brittle Materials

2007 ◽  
Vol 329 ◽  
pp. 403-408 ◽  
Author(s):  
Bing Zhang ◽  
Masato Yoshioka
Keyword(s):  
Finite Element ◽  
Three Dimensional ◽  
Brittle Materials ◽  
Element Model ◽  
Time Dependent ◽  
Stress Fields ◽  
Element Analysis ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element ◽  
Good Agreement

A three dimensional finite element model for Vickers indentations on brittle materials is presented in order to analyze the stress distribution. The objective of this paper is to study when and where cracks are most likely to initiate and propagate in the indentation cycle based on the analyzed stresses. Therefore the time-dependent stresses around and below the surface of the contact area during the indentation cycle, especially at the end of loading and at the beginning of unloading phase are investigated in detail. The analytical results are shown to be in good agreement and verified with the experimental results.

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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