An Analytical Technique for Optimization of Mechanical Performance of Foam Core Sandwich Structures

Hanif Montazeri; Fardad Azarmi; Tom W. Coyle; Javad Mostaghimi

doi:10.4028/www.scientific.net/MSF.706-709.1373

Paper Titles

Precipitation in Zr-Based Ternary Alloys during Quenching
p.1348

Homogeneous Abnormal Grain Growth in Polycrystalline Materials
p.1355

Flow Curve Modelling of an Austenitic Stainless Steel at High Temperatures Starting from the One-Parameter Model of Strain Hardening
p.1361

Interface Motion and Interface Mobility of the Partitioning Phase Transformations in Fe-Mn-C and Fe-C Alloys: A Cyclic Phase Transformation Approach
p.1367

An Analytical Technique for Optimization of Mechanical Performance of Foam Core Sandwich Structures
p.1373

Mathematical Modeling of Behaviour a Liquid Steel Flow and a Non-Metallic Inclusions in the One Strand Wedge Type Tundish with a Subflux Turbulence Controller and a Low Dam
p.1379

Numerical Modeling of Nonmetallic Inclusions Flowing Out during Solidification of Continuous Cast Steel Billets in Mould Zone
p.1385

Hydrogen Charging of High Strength Steel Specimens and Physical Simulation of Cold Cracking under Laser Beam Welding Conditions
p.1391

The Influence of the Initial State on the Softening and Precipitation Kinetics in Hot Metal Forming
p.1397

HomeMaterials Science ForumMaterials Science Forum Vols. 706-709An Analytical Technique for Optimization of...

An Analytical Technique for Optimization of Mechanical Performance of Foam Core Sandwich Structures

Abstract:

Sandwich structures are widely used, especially in areas where the performance of conventional materials is simply not adequate. Sandwich components achieve the same structural performance as conventional materials with weight savings of up to 75 %. They are basically made from two thin skins (faces) and a lightweight thicker core. Their structural, physical, and mechanical characteristics can be tailored based on service requirements by selection of different materials and manufacturing processes. In this study, the geometry and property of each separate component is utilized to the structural advantage of the whole assembly. Although Lagrangian method has been widely applied in other engineering disciplines, it has received less attention for optimization of sandwich components. The Lagrangian method is therefore introduced and expanded to find solutions for multipurpose design problems. This new optimization approach will enable us to find analytical solutions for complicated design problems which were conventionally solved by utilizing graphical methods. This paper aims to present a generic optimization method which can be used in the variety of applications in this field.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 706-709)

Pages:

1373-1378

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.706-709.1373

Citation:

Cite this paper

Online since:

January 2012

Authors:

Hanif Montazeri, Fardad Azarmi, Tom W. Coyle, Javad Mostaghimi

Keywords:

Foam Core Sandwich Structures, Mechanical Performance, Optimization

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] J. Saporito, Sandwich Structures on Aerospatiale Helicopters. Proceeding 34th International SAMPE Symposium and Exhibition, Reno, Nevada, (1989) 2506-2513.

Google Scholar

[2] J. Kim, and S. R. Swanson, Design of sandwich Structures for Concentrated Loading. Composite Structure Vol. 52 (2001), p.365.

DOI: 10.1016/s0263-8223(01)00027-7

Google Scholar

[3] D. J. Sypeck, Wrought Aluminum Truss Core Sandwich Structures. Metallurgical and Materials Transactions B 36 (2005), p.125.

DOI: 10.1007/s11663-005-0012-5

Google Scholar

[4] H. N.G. Wadley, N. A. Fleck, and A. G. Evans, Fabrication and Structural Performance of Periodic Cellular Metal Sandwich Structures. Composites Science and Technology, Vol. 63 (2003), 2331–2343.

DOI: 10.1016/s0266-3538(03)00266-5

Google Scholar

[5] Huang, S. N. and Alspaugh, D. W. 1974. Minimum Weight Sandwich Beam Design, AIAA J 12, 1617-1618.

DOI: 10.2514/3.49567

Google Scholar

[6] C. Tapp, W. Hansel, C. Mittelstedt, and W. Becker, Weight-Reduction of sandwich Structures by an Efficient Topology Optimization Technique. PAMM, Proceedings in Applied Mathematics and Mechanics 4, (2004) 626-627.

DOI: 10.1002/pamm.200410294

Google Scholar

[7] J. R. Vinson, The Behavior of Sandwich Structures of Isotropic and Composite Materials. Technomic Publishing Company, Lancaster, PA (1999).

Google Scholar

[8] L. G. Gibson, Optimization of Stiffness in Sandwich Beams with Rigid Foam Cores. Materials Science and Engineering Vol. 67 125-135, (1984).

DOI: 10.1016/0025-5416(84)90043-0

Google Scholar

[9] L. G. Gibson, and M. F. Ashby, Cellular Solids; Structure & Properties, Pergamon Press, 1st Edition, (1988).

Google Scholar

[10] S.R. Swanson, and J. Kim, 2003. Failure modes and optimization of sandwich structures for load resistance. Journal of Composite Materials, Vol. 37 (7) (2003), pp.649-667.

DOI: 10.1177/002199803029730

Google Scholar

[11] J. Kim, S.R. Swanson, . Effect of unequal face thickness on load resistance of sandwich beams. Journal of Sandwich Structures and Materials, Vol. 6 (2) (2004), p.145.

DOI: 10.1177/1099636204030476

Google Scholar

[12] O. Murthy, N. Munirudrappa, , L. Srikanth, R.M.V.G.K. Rao, Strength and stiffness optimization studies on honeycomb core sandwich panels. Journal of Reinforced Plastics and Composites, Vol. 25 (6) (2006), p.663.

DOI: 10.1177/0731684406058288

Google Scholar

[13] C. -K. Chang, , J. -H. Cheng, Optimization of sandwich monocoque car body with equivalent shell element. Journal of Mechanics, Vol. 23 (4) (2007) p.381.

DOI: 10.1017/s172771910000143x

Google Scholar

[14] J. E. Marsden, and A. J. Tromba, Vector Calculus, W. H. Freeman & Co, 5th edition, New York (2003).

Google Scholar