Theoretical expressions for describing the stiffness and strength of regular hexagonal honeycombs with Plateau borders

被引：20

作者：

Chuang, CH ^{[1
]}

Huang, JS ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Civil Engn, Tainan 70101, Taiwan

来源：

MATERIALS & DESIGN | 2003年 / 24卷 / 04期

关键词：

honeycomb; mechanical properties;

D O I：

10.1016/S0261-3069(03)00036-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of non-uniform cell-edge cross-section on the theoretical expressions for describing the stiffness and strength of regular hexagonal honeycombs are evaluated here. The non-uniform cross-section is taken to be a Plateau border. The microstructure coefficients and exponent constants in the theoretical expressions for describing the Young's modulus, shear modulus, plastic collapse strength and elastic buckling strength of regular hexagonal honeycombs are modified to account for the effect of solid distribution in cell edges. Consequently, the design maps of regular hexagonal honeycombs with Plateau borders for any prescribed stiffness and strength are generated. Meanwhile, the optimal value of Phi(2), characterizing the solid distribution in cell edges, is obtained and found to be dependent on the relative density we specified. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：263 / 272

页数：10

共 17 条

[1] Creep behavior of a closed-cell aluminum foam [J].

Andrews, EW ;

Huang, JS ;

Gibson, LJ .

ACTA MATERIALIA, 1999, 47 (10) :2927-2935

[2]

Ashby M. F., 1997, CELLULAR SOLIDS STRU, DOI DOI 10.1017/CBO9781139878326

[3] Effect of inclusions and holes on the stiffness and strength of honeycombs [J].

Chen, C ;

Lu, TJ ;

Fleck, NA .

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2001, 43 (02) :487-504

[4] Effect of imperfections on the yielding of two-dimensional foams [J].

Chen, C ;

Lu, TJ ;

Fleck, NA .

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1999, 47 (11) :2235-2272

[5] Elastic moduli and plastic collapse strength of hexagonal honeycombs with plateau borders [J].

Chuang, CH ;

Huang, JS .

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2002, 44 (09) :1827-1844

[6] Effects of solid distribution on the elastic buckling of honeycombs [J].

Chuang, CH ;

Huang, JS .

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2002, 44 (07) :1429-1443

[7]

CHUANG CH, 2001, ACTA MECH, V159, P157

[8] THE MECHANICS OF TWO-DIMENSIONAL CELLULAR MATERIALS [J].

GIBSON, LJ ;

ASHBY, MF ;

SCHAJER, GS ;

ROBERTSON, CI .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1982, 382 (1782) :25-42

[9] Influence of wavy imperfections in cell walls on elastic stiffness of cellular solids [J].

Grenestedt, JL .

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1998, 46 (01) :29-50

[10] Creep of open-cell Voronoi foams [J].

Huang, JS ;

Gibson, LJ .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 339 (1-2) :220-226

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