On the Determination of Physical Properties of Composite Materials by a Three-Dimensional Finite-Element Procedure

2009 ◽  
pp. 166-166-22 ◽  
Author(s):  
SI Kang ◽  
GM Rentzepis
Keyword(s):  
Finite Element ◽  
Composite Materials ◽  
Physical Properties ◽  
Three Dimensional ◽  
Dimensional Finite Element ◽  
Finite Element Procedure ◽  
Three Dimensional Finite Element

Evaluation of Intensity of Singularity at 3D Piezoelectric Bonded Joints Using a Conservative Integral

2015 ◽  
Author(s):  
Chonlada Luangarpa ◽  
Hideo Koguchi
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electric Potential ◽  
Three Dimensional ◽  
Stress Singularity ◽  
Bonded Joints ◽  
Conservative Integral ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

In the present study, a conservative integral based on the Betti reciprocal principle is formulated in order to obtain the intensity of singularity at a vertex of the interface in three-dimensional piezoelectric bi-material bonded joints. To our knowledge, there are few studies on the determination of the intensity of singularity in the three-dimensional piezoelectric bonded joints. In addition, no study on the determination of the intensity of singularity in the 3D piezoelectric bonded joints using the conservative integral has been conducted. Eigenanalysis formulated using a three-dimensional finite element method (FEM) is used to calculate the order of stress singularity, angular variables of mechanical displacements, stresses, electric displacements and electric potential. In order to investigate the influence of an integral area on the accuracy of the results, models with various integral areas are used. The results are compared with those obtained from FEM.

scholarly journals Simulations Of Air Flow Over A Parabolic Antenna

2012 ◽  
Vol 56 (1) ◽  
pp. 81-87
Author(s):  
Liviu Bereteu ◽  
Dorin Simoiu
Keyword(s):  
Finite Element ◽  
Air Flow ◽  
Three Dimensional ◽  
Parabolic Antenna ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

AbstractIn this paper it is present the influence of the wind on a parabolic antenna, in order to study this influence it was made simulations of air flow over a parabolic antenna. The simulations are made with antenna positioned at 90°, 135°. A three – dimensional finite element is simulated for determination of the antenna displacement.

scholarly journals Interaction of rack-and-pinion lock parts under external load

2019 ◽  
pp. 105-112
Author(s):  
Evgeniy Gusev ◽  
Viktor Krasavtsev
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
External Load ◽  
Accurate Determination ◽  
Three Dimensional ◽  
Design Criteria ◽  
Finite Element Models ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

This paper describes numerical simulation and analysis of interaction between the parts of rack-and-pinion lock under operational external load, so as to develop design criteria and recommendations for its joints, as well as for more accurate determination of clearances between coamings and hatch covers, required to develop water-tight rubber sealings. These tasks are accomplished by means of detailed three-dimensional finite-element models representing two variants of rack-and-pinion lock, with their further verification. The study included numerical simulation of contact interaction between the parts of the lock, as well as analysis of design solutions for its main joints. As a result, coaming-cover clearances have been determined and manufacturing requirements to rubber sealings of the lock variants under investigation have been successfully formulated.

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