Finite element modeling of stress distributions and problems for multi-slice longwall mining in Bangladesh, with special reference to the Barapukuria coal mine

2009 ◽  
Vol 78 (2) ◽  
pp. 91-109 ◽  
Author(s):  
Md. Rafiqul Islam ◽  
Daigoro Hayashi ◽  
A.B.M. Kamruzzaman
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Special Reference ◽  
Coal Mine ◽  
Longwall Mining ◽  
Stress Distributions ◽  
Element Modeling ◽  
Barapukuria Coal Mine

A New Finite Element Modeling Technique for Disbonded Adhesive Joints

2000 ◽  
Author(s):  
H.-Y. Yen ◽  
M.-H. Herman Shen
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Prediction Method ◽  
Adhesive Joints ◽  
Modeling Technique ◽  
Stress Distributions ◽  
Element Modeling ◽  
Spring Element ◽  
Bonded Joint ◽  
Finite Element Procedure

Abstract A new disbonded interface model and a finite element procedure have been developed to calculate the stress distributions of the adhesive joints with imperfectly-bonded interfaces under tensile loading. The finite element modeling of the weakened strength of the disbonded interfaces is accomplished by a new line element and a spring element. The finite element procedure consists of a new modeling technique for assessing the effects of disbonded interfaces on the stress fields of adhesive joints. The results for this work can be used as a basis for the development of the bonded joint reliability prediction method and accept/reject inspection criteria.

Exact First Order Finite Element Modeling for Eddy Current NDE

1991 ◽  
Vol 3 (1) ◽  
pp. 235-253 ◽  
Author(s):  
L. D. Philipp ◽  
Q. H. Nguyen ◽  
D. D. Derkacht ◽  
D. J. Lynch ◽  
A. Mahmood
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Eddy Current ◽  
Element Modeling ◽  
First Order ◽  
Eddy Current Nde

Tire Vibration Modes and Effects on Vehicle Ride Quality

1993 ◽  
Vol 21 (1) ◽  
pp. 23-39 ◽  
Author(s):  
R. W. Scavuzzo ◽  
T. R. Richards ◽  
L. T. Charek
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Operating Conditions ◽  
Modal Testing ◽  
Ride Quality ◽  
Vibration Modes ◽  
Inflation Pressure ◽  
Passenger Cars ◽  
Element Modeling ◽  
Road Surfaces

Abstract Tire vibration modes are known to play a key role in vehicle ride, for applications ranging from passenger cars to earthmover equipment. Inputs to the tire such as discrete impacts (harshness), rough road surfaces, tire nonuniformities, and tread patterns can potentially excite tire vibration modes. Many parameters affect the frequency of tire vibration modes: tire size, tire construction, inflation pressure, and operating conditions such as speed, load, and temperature. This paper discusses the influence of these parameters on tire vibration modes and describes how these tire modes influence vehicle ride quality. Results from both finite element modeling and modal testing are discussed.

Evolving the Banded Radial Tire

1987 ◽  
Vol 15 (1) ◽  
pp. 30-41 ◽  
Author(s):  
E. G. Markow
Keyword(s):  
Finite Element ◽  
Wear Rate ◽  
Finite Element Modeling ◽  
Laboratory Tests ◽  
Rolling Resistance ◽  
Two Dimensional ◽  
Theoretical Discussion ◽  
Radial Tire ◽  
Puncture Resistance ◽  
Element Modeling

Abstract Development of the banded radial tire is discussed. A major contribution of this tire design is a reliable run-flat capability over distances exceeding 160 km (100 mi). Experimental tire designs and materials are considered; a brief theoretical discussion of the mechanics of operation is given based on initial two-dimensional studies and later on more complete finite element modeling. Results of laboratory tests for cornering, rolling resistance, and braking are presented. Low rolling resistance, good cornering and braking properties, and low tread wear rate along with good puncture resistance are among the advantages of the banded radial tire designs.

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