Spiderweb honeycombs. (1st August 2015)
- Record Type:
- Journal Article
- Title:
- Spiderweb honeycombs. (1st August 2015)
- Main Title:
- Spiderweb honeycombs
- Authors:
- Mousanezhad, D.
Ebrahimi, H.
Haghpanah, B.
Ghosh, R.
Ajdari, A.
Hamouda, A.M.S.
Vaziri, A. - Abstract:
- Highlights: A new class of hierarchical honeycombs inspired by the spider's web is introduced. Closed-form expressions of elastic moduli are derived for first order hierarchy. Small deformation response varies from bending to stretching dominated. Spiderweb hierarchy possesses a combination of high stiffness and toughness. Spiderweb honeycombs exhibit auxetic behavior at large deformations. Abstract: Small and large deformation in-plane elastic response of a new class of hierarchical fractal-like honeycombs inspired by the topology of the "spiderweb" were investigated through analytical modeling, detailed numerical simulations, and mechanical testing. Small deformation elasticity results show that the isotropic in-plane elastic moduli (Young's modulus and Poisson's ratio) of the structures are controlled by dimension ratios in the hierarchical pattern of spiderweb, and the response can vary from bending to stretching dominated. In large deformations, spiderweb hierarchy postpones the onset of instability compared to stretching dominated triangular honeycomb (which is indeed a special case of the proposed spiderweb honeycomb), and exhibits hardening behavior due to geometrical nonlinearity. Furthermore, simple geometrical arguments were obtained for large deformation Poisson's ratio of first order spiderweb honeycombs, which show good agreement with numerical and experimental results. Spiderweb honeycombs exhibit auxetic behavior depending on the non-dimensional geometricalHighlights: A new class of hierarchical honeycombs inspired by the spider's web is introduced. Closed-form expressions of elastic moduli are derived for first order hierarchy. Small deformation response varies from bending to stretching dominated. Spiderweb hierarchy possesses a combination of high stiffness and toughness. Spiderweb honeycombs exhibit auxetic behavior at large deformations. Abstract: Small and large deformation in-plane elastic response of a new class of hierarchical fractal-like honeycombs inspired by the topology of the "spiderweb" were investigated through analytical modeling, detailed numerical simulations, and mechanical testing. Small deformation elasticity results show that the isotropic in-plane elastic moduli (Young's modulus and Poisson's ratio) of the structures are controlled by dimension ratios in the hierarchical pattern of spiderweb, and the response can vary from bending to stretching dominated. In large deformations, spiderweb hierarchy postpones the onset of instability compared to stretching dominated triangular honeycomb (which is indeed a special case of the proposed spiderweb honeycomb), and exhibits hardening behavior due to geometrical nonlinearity. Furthermore, simple geometrical arguments were obtained for large deformation Poisson's ratio of first order spiderweb honeycombs, which show good agreement with numerical and experimental results. Spiderweb honeycombs exhibit auxetic behavior depending on the non-dimensional geometrical ratio of spiderweb. … (more)
- Is Part Of:
- International journal of solids and structures. Volume 66(2015)
- Journal:
- International journal of solids and structures
- Issue:
- Volume 66(2015)
- Issue Display:
- Volume 66, Issue 2015 (2015)
- Year:
- 2015
- Volume:
- 66
- Issue:
- 2015
- Issue Sort Value:
- 2015-0066-2015-0000
- Page Start:
- 218
- Page End:
- 227
- Publication Date:
- 2015-08-01
- Subjects:
- Cellular structures -- Hierarchy -- Large deformation mechanisms -- Auxetic behavior -- Instability
Mechanics, Applied -- Periodicals
Structural analysis (Engineering) -- Periodicals
Elastic solids -- Periodicals
Mécanique appliquée -- Périodiques
Constructions, Théorie des -- Périodiques
Solides élastiques -- Périodiques
Elastic solids
Mechanics, Applied
Structural analysis (Engineering)
Periodicals
624.18 - Journal URLs:
- http://www.sciencedirect.com/science/journal/00207683 ↗
http://www.elsevier.com/journals ↗ - DOI:
- 10.1016/j.ijsolstr.2015.03.036 ↗
- Languages:
- English
- ISSNs:
- 0020-7683
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 4542.650000
British Library DSC - BLDSS-3PM
British Library STI - ELD Digital store - Ingest File:
- 6115.xml