Finite Element Thermal Analysis of Optical Lenses in 18 × 1 Space Incoherent Laser Beam Combiner with Rectangular Spot

Laser tile grout sealing is a special process in which voids between the adjoining ceramic tiles are sealed by a laser beam. This process has been developed by Lawrence and Li using a customized grout material and a high power diode laser (HPDL). The process has been optimally carried out at laser powers of 60–120 W and at scanning speeds of 3–15 mm/s. Modelling of the laser tile grout sealing process is a complex task as it involves a moving laser beam and five different materials: glazed enamel, grout material, ceramic tile, epoxy bedding, and ordinary Portland cement substrate. This article presents the finite element model (FEM) of the laser tile grout sealing process. The main aim of this model is to accurately predict the thermo-mechanical stress distribution induced by the HPDL beam in the process. For an accurate representation of the process, the laser was modelled as a moving heat source. A three-dimensional transient thermal analysis was carried out to determine the temperature distribution. Temperature-dependent material properties and latent heat effects, due to melting and solidification of the glazed enamel, were taken into account in the FEM, thereby allowing a more realistic and accurate thermal analysis. The results of the thermal analysis were used as an input for the stress analysis with temperature-dependent mechanical properties. The results obtained from the FEM are compared with the published experimental results.

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Simulation of Nine-Spacer Nozzle’s Flow Field of Al Roll-Casting Using Coupled Fluid-Thermal Finite Element Analysis

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.159.697 ◽

2010 ◽

Vol 159 ◽

pp. 697-702

Author(s):

Ying Zhou ◽

Ya Xi Tan

Keyword(s):

Thermal Analysis ◽

Finite Element Analysis ◽

Finite Element ◽

Flow Field ◽

Three Dimensional ◽

Fem Simulation ◽

Cooling Capacity ◽

Element Analysis ◽

Roll Casting ◽

Element Simulation

A three-dimensional coupled fluid-thermal finite element simulation model has been developed to provide analyzing distribution of velocity and temperature of nine-spacer nozzle by using FEM simulation of FLOTRAN module in ANSYS 6.0. To explore fluid-thermal analysis of the flow fields of nine-spacer nozzle of aluminum roll-casting, stricter analysis of postprocessing result was conducted by MATLAB. It was concluded that flow field of nine-spacer nozzle was able to match cooling capacity of cast rollers, but nine-spacer nozzle’s geometric flaw didn’t suit for working in the case of speed increasing of the drawing-sheet and thickness reducing of the aluminium sheet during roll casting.

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Thermal analysis of GaN-based LEDs using the finite element method and unit temperature profile approach

physica status solidi (b) ◽

10.1002/pssb.200405099 ◽

2004 ◽

Vol 241 (12) ◽

pp. 2681-2684 ◽

Cited By ~ 16

Author(s):

Tae Hee Lee ◽

Lan Kim ◽

Woong Joon Hwang ◽

C. C. Lee ◽

Moo Whan Shin

Keyword(s):

Finite Element Method ◽

Thermal Analysis ◽

Finite Element ◽

Temperature Profile ◽

The Finite Element Method ◽

Profile Approach ◽

Element Method

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Developing a Finite Element Model for Thermal Analysis of Friction Stir Welding by Calculating Temperature Dependent Friction Coefficient

2nd International Conference on Mechanical, Manufacturing and Process Plant Engineering - Lecture Notes in Mechanical Engineering ◽

10.1007/978-981-10-4232-4_9 ◽

2017 ◽

pp. 107-126 ◽

Cited By ~ 11

Author(s):

B. Meyghani ◽

M. Awang ◽

S. Emamian ◽

Nor M. Khalid

Keyword(s):

Thermal Analysis ◽

Finite Element ◽

Friction Stir Welding ◽

Friction Coefficient ◽

Finite Element Model ◽

Element Model ◽

Temperature Dependent ◽

Friction Stir

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Coupled Thermal-Structural Analysis of Generator For sCO2 Turbomachinery

10.1115/gtindia2021-76451 ◽

2021 ◽

Author(s):

Ramesha Guntanur ◽

Ashutosh Patel ◽

Vijay Biradar ◽

Pramod Kumar

Keyword(s):

Thermal Analysis ◽

Finite Element ◽

Temperature Distribution ◽

Structural Analysis ◽

Contact Pressure ◽

Temperature Rise ◽

Thermal Stresses ◽

Flow Path ◽

Heat Losses ◽

Positive Contact

Abstract This paper presents the coupled thermal and structural analysis of the rotating components of the generator using ABAQUS finite element solver. The interference between shaft and rotor is optimized to have a positive contact pressure and also minimize the stresses in the laminate at all operating speeds. Thermal analysis is performed to simulate the temperature distribution arising from the heat losses of generator. The flow path of the coolant is designed through the shaft to minimise the temperature rise of the generator. The resulting changes in the contact pressure between laminated disc and shaft is computed using sequentially coupled thermal and structural analysis. The thermal stresses of rotor are computed estimated and the design is optimized for transmitting torque at different operating speeds.

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