Finite‐element modeling of laser beam heating of magnetic films

1985 ◽  
Vol 57 (8) ◽  
pp. 3894-3896 ◽  
Author(s):  
Manoj. K. Bhattacharyya ◽  
Zoltan J. Cendes
Keyword(s):  
Finite Element ◽  
Laser Beam ◽  
Finite Element Modeling ◽  
Magnetic Films ◽  
Element Modeling ◽  
Beam Heating ◽  
Laser Beam Heating

scholarly journals Finite Element Modeling for the Structural Analysis of Al-Cu Laser Beam Welding

2016 ◽  
Vol 83 ◽  
pp. 1404-1414 ◽  
Author(s):  
Udo Hartel ◽  
Alexander Ilin ◽  
Christoph Bantel ◽  
Jens Gibmeier ◽  
Vesselin Michailov
Keyword(s):  
Finite Element ◽  
Structural Analysis ◽  
Laser Beam ◽  
Finite Element Modeling ◽  
Laser Beam Welding ◽  
Element Modeling

The Effect of Laser Beam Geometry on Cut Path Deviation in Diode Laser Chip-Free Cutting of Glass

2009 ◽  
Vol 132 (1) ◽  
Author(s):  
Salman Nisar ◽  
M. A. Sheikh ◽  
Lin Li ◽  
Andrew J. Pinkerton ◽  
Shakeel Safdar
Keyword(s):  
Finite Element ◽  
Laser Beam ◽  
Finite Element Modeling ◽  
Thermal Stresses ◽  
Element Modeling ◽  
Beam Geometry ◽  
Trailing Edges ◽  
Controlled Fracture ◽  
Cut Path Deviation ◽  
Path Deviation

In laser cleaving of brittle materials using the controlled fracture technique, thermal stresses are used to induce a single crack and the material is separated along the cutting path by extending the crack. One of the problems in laser cutting of glass with the controlled fracture technique is the cut deviation at the leading and the trailing edges of the glass sheet. This work is about minimizing this deviation through an optimization process, which includes laser beam geometry. It has been established that the thermal stresses generated during laser scanning are strongly dependent upon laser beam geometry. Experimental techniques are used to quantify cut deviation for soda-lime glass sheets under a set of conditions while finite element modeling is used to optimize the process and reduce (or eliminate) cut deviation. The experimental results of the effect of different laser beam geometries on cut path deviation have been presented in this study, along with the finite element modeling of the cutting process to simulate the transient effects of the moving beam and predict thermal fields and stress distribution. These predictions are compared with the experimental data. In comparison to other beam geometries, the triangular-forward beam at the leading edge and triangular-reverse and circular beam geometry at the trailing edge produces lower tensile stresses (σxx) and hence minimizes the cut path deviation. The work also shows that beam divergence inside the glass plays a significant role in changing the cut path deviation at the bottom leading and trailing edges of the glass.

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.

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