Microstructural-mechanical co-relation for Al2O3 reinforced aluminum metallic foam processed by compaction and sintering

2021 ◽  
Author(s):  
Ojestez Tripathi ◽  
Vijay Kumar Dwivedi ◽  
Mayank Agarwal
Keyword(s):  
Metallic Foam

Finite element simulation of mechanical behaviour of nickel-based metallic foam structures

2009 ◽  
Vol 471 (1-2) ◽  
pp. 147-152 ◽  
Author(s):  
Sid-Ali Kaoua ◽  
Djaffar Dahmoun ◽  
Abd-Elmouneim Belhadj ◽  
Mohammed Azzaz
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Mechanical Behaviour ◽  
Metallic Foam ◽  
Element Simulation

Periodic Forced Convection in a Darcy Metallic Foam: The LTNE Model

2012 ◽  
Author(s):  
Eugenia Rossi di Schio ◽  
Antonio Barletta
Keyword(s):  
Forced Convection ◽  
Outer Boundary ◽  
Method Of Lines ◽  
Mean Value ◽  
Entrance Region ◽  
Solid Matrix ◽  
Metallic Foam ◽  
The Method Of Lines ◽  
Thermal Entrance Region ◽  
Thermal Entrance

The present paper studies the thermal entrance region in a concentric annular duct filled by a fluid saturated porous metallic foam, with reference to steady forced convection and to a thermal boundary condition given by a wall temperature longitudinally varying with a sinusoidal law. The effect of viscous dissipation in the fluid is taken into account, and a two-temperature model is employed in order to evaluate separately the local fluid and solid matrix temperatures. The governing equations in the thermal entrance region are solved numerically by the method of lines. The Nusselt numer and its mean value in an axial period is evaluated, with reference both to the inner and the outer boundary.

Laser Beam Welding of Open-Porous Metallic Foams for Application in Cooling Structures of Combined Cycle Power Plants

2010 ◽  
Vol 132 (5) ◽  
Author(s):  
Uwe Reisgen ◽  
Simon Olschok ◽  
Stefan Longerich
Keyword(s):  
Laser Beam ◽  
Power Plants ◽  
Laser Beam Welding ◽  
Combined Cycle ◽  
Metallic Foam ◽  
Research Centre ◽  
Combustion Chambers ◽  
Multilayer Systems ◽  
Wall Area ◽  
Graded Structures

Within the Collaborative Research Centre 561, “Thermally highly loaded, porous and cooled multilayer systems for combined cycle power plants,” open-porous and high-temperature stable Ni-based structures are being developed for the requirements of effusion cooling. A two-dimensional cooling strategy for the walls of combustion chambers, which allows the outflow of the cooling medium over the complete wall area of the combustion chamber, could be realized by an open-porous metallic foam structure. The open-porous metallic foam is produced by the “slip reaction foam sintering” process, a powder metallurgical process. To join several foams to assemble structural elements, laser beam welding has been used. Different joining strategies have been examined to find out the most suitable method to join these foams. In this paper, the process setups, settings of the different strategies, and results of trials (seam geometry and strength tests) are discussed. The need for graded structures to combine the essential permeability and adequate weldability is also shown.

A new indentation model for sandwich circular panels with gradient metallic foam cores

2015 ◽  
Vol 83 ◽  
pp. 270-275 ◽  
Author(s):  
Lin Mu ◽  
Chongdu Cho ◽  
Guiping Zhao ◽  
Dengbao Xiao
Keyword(s):  
Metallic Foam

LOAD-CARRYING CAPACITIES FOR CIRCULAR METAL FOAM CORE SANDWICH PANELS AT LARGE DEFLECTION

2008 ◽  
Vol 22 (31n32) ◽  
pp. 6218-6223 ◽  
Author(s):  
W. HOU ◽  
Z. WANG ◽  
L. ZHAO ◽  
G. LU ◽  
D. SHU
Keyword(s):  
Finite Element ◽  
Velocity Field ◽  
Large Deflection ◽  
Metal Foam ◽  
Yield Criterion ◽  
Metallic Foam ◽  
Foam Core ◽  
Element Simulation ◽  
Load Carrying ◽  
Good Agreement

This paper is concerned with the load-carrying capacities of a circular sandwich panel with metallic foam core subjected to quasi-static pressure loading. The analysis is performed with a newly developed yield criterion for the sandwich cross section. The large deflection response is estimated by assuming a velocity field, which is defined based on the initial velocity field and the boundary condition. A finite element simulation has been performed to validate the analytical solution for the simply supported cases. Good agreement is found between the theoretical and finite element predictions for the load-deflection response.

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