The in-plane non-linear compression of regular honeycombs

A theoretical analysis is made of the in-plane uniaxial compression of regular honeycombs made from a range of materials. Both the elastic and elastic-plastic responses are considered, as a function of the honeycomb density, for strains until the faces touch. The stress–strain relationship and later...

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Bibliographic Details
Published inInternational journal of solids and structures Vol. 37; no. 13; pp. 1931 - 1949
Main Authors Zhu, H.X., Mills, N.J.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.03.2000
Elsevier Science
Subjects
Applied sciences
Buckling
Cellular
Exact sciences and technology
Forms of application and semi-finished materials
Fundamental areas of phenomenology (including applications)
Honeycomb
Inelasticity (thermoplasticity, viscoplasticity...)
Non-linear deformation
Physics
Polymer industry, paints, wood
Polymers
Solid mechanics
Structural and continuum mechanics
Technology of polymers
Viscoelasticity, plasticity, viscoplasticity
Non-linear deformation
Honeycomb
Polymers
Buckling
Strain softening
Stress strain relation
Elastomer
Thermoplastic rubber
Experimental study
Modeling
Uniaxial compression
Inelasticity
Elastoplasticity
Honeycomb structure
Foam(plastics)
Non linear effect
Localization
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Summary:A theoretical analysis is made of the in-plane uniaxial compression of regular honeycombs made from a range of materials. Both the elastic and elastic-plastic responses are considered, as a function of the honeycomb density, for strains until the faces touch. The stress–strain relationship and lateral expansion are predicted for loading in the symmetry axis directions, for deformation modes with and without vertex rotation. For an elastic honeycomb, compressed parallel to one set of faces, a buckling mode with vertex rotation gives the lower stress, for strains exceeding 10% in honeycombs with single thickness vertical faces, and 15% strain for double-thickness faces. If the material yields, or other forms of non-linearity occur, there can be strain softening, which leads to strain localisation. Deformation mechanisms are linked to the material response and the honeycomb density, and are compared with experiments on polymeric honeycombs.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0020-7683
1879-2146
DOI:10.1016/S0020-7683(98)00324-2