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Mechanics of regular, chiral and hie...

Haghpanah Jahromi, Babak.

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Mechanics of regular, chiral and hierarchical honeycombs.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Mechanics of regular, chiral and hierarchical honeycombs./
作者:	Haghpanah Jahromi, Babak.
面頁冊數:	130 p.
附註:	Source: Dissertation Abstracts International, Volume: 75-04(E), Section: B.
Contained By:	Dissertation Abstracts International75-04B(E).
標題:	Engineering, Mechanical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3607571
ISBN:	9781303651694

Mechanics of regular, chiral and hierarchical honeycombs.
Haghpanah Jahromi, Babak.

Mechanics of regular, chiral and hierarchical honeycombs. - 130 p.

Source: Dissertation Abstracts International, Volume: 75-04(E), Section: B.

Thesis (Ph.D.)--Northeastern University, 2014.

Approaches to obtain analytical closed-form expressions for the macroscopic elastic, plastic collapse, and buckling response of various two-dimensional cellular structures are presented. First, we will provide analytical models to estimate the effective elastic modulus and Poisson's ratio of hierarchical honeycombs using the concepts of mechanics of materials and compare the analytical results with finite element simulations and experiments. For plastic collapse, we present a numerical minimization procedure to determine the macroscopic `plastic collapse strength' of a tessellated cellular structure under a general stress state. The method is illustrated with sample cellular structures of regular and hierarchical honeycombs. Based on the deformation modes found by minimization of plastic dissipation, closed-form expressions for strength are derived. The work generalizes previous studies on plastic collapse analysis of lattice structures, which are limited to very simple loading conditions. Finally, the method for calculation of buckling strength is based on classical beam-column end-moment behavior expressed in a matrix form. It is applied to regular, chiral, and hierarchical honeycombs with square, triangular, and hexagonal unit cells to determine their buckling strength under a general macroscopic stress state. The results were verified using finite element eigenvalue analysis.

ISBN: 9781303651694Subjects--Topical Terms:

783786
Engineering, Mechanical.

Mechanics of regular, chiral and hierarchical honeycombs.
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020 $a 9781303651694
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100 1 $a Haghpanah Jahromi, Babak. $3 2106419
245 1 0 $a Mechanics of regular, chiral and hierarchical honeycombs.
300 $a 130 p.
500 $a Source: Dissertation Abstracts International, Volume: 75-04(E), Section: B.
500 $a Adviser: Ashkan Vaziri.
502 $a Thesis (Ph.D.)--Northeastern University, 2014.
520 $a Approaches to obtain analytical closed-form expressions for the macroscopic elastic, plastic collapse, and buckling response of various two-dimensional cellular structures are presented. First, we will provide analytical models to estimate the effective elastic modulus and Poisson's ratio of hierarchical honeycombs using the concepts of mechanics of materials and compare the analytical results with finite element simulations and experiments. For plastic collapse, we present a numerical minimization procedure to determine the macroscopic `plastic collapse strength' of a tessellated cellular structure under a general stress state. The method is illustrated with sample cellular structures of regular and hierarchical honeycombs. Based on the deformation modes found by minimization of plastic dissipation, closed-form expressions for strength are derived. The work generalizes previous studies on plastic collapse analysis of lattice structures, which are limited to very simple loading conditions. Finally, the method for calculation of buckling strength is based on classical beam-column end-moment behavior expressed in a matrix form. It is applied to regular, chiral, and hierarchical honeycombs with square, triangular, and hexagonal unit cells to determine their buckling strength under a general macroscopic stress state. The results were verified using finite element eigenvalue analysis.
590 $a School code: 0160.
650 4 $a Engineering, Mechanical. $3 783786
650 4 $a Applied Mechanics. $3 1018410
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690 $a 0346
710 2 $a Northeastern University. $b Mechanical and Industrial Engineering. $3 1035359
773 0 $t Dissertation Abstracts International $g 75-04B(E).
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791 $a Ph.D.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3607571