title: Buckling of regular, chiral and hierarchical honeycombs under a general macroscopic stress state.
abstract: An approach to obtain analytical closed-form expressions for the macroscopic 'buckling strength' of various two-dimensional cellular structures is presented. The method is based on classical beam-column end-moment behaviour expressed in a matrix form. It is applied to sample honeycombs with square, triangular and hexagonal unit cells to determine their buckling strength under a general macroscopic in-plane stress state. The results were verified using finite-element Eigenvalue analysis.
authors.affiliation: Department of Mechanical and Industrial Engineering , Northeastern University , Boston, MA, USA.
authors.forename: Babak
authors.initials: B
authors.lastname: Haghpanah
authors.affiliation: Department of Mechanical and Industrial Engineering , Northeastern University , Boston, MA, USA.
authors.forename: Jim
authors.initials: J
authors.lastname: Papadopoulos
authors.affiliation: Department of Mechanical and Industrial Engineering , Northeastern University , Boston, MA, USA.
authors.forename: Davood
authors.initials: D
authors.lastname: Mousanezhad
authors.affiliation: Department of Mechanical and Industrial Engineering , Northeastern University , Boston, MA, USA.
authors.forename: Hamid
authors.initials: H
authors.lastname: Nayeb-Hashemi
authors.affiliation: Department of Mechanical and Industrial Engineering , Northeastern University , Boston, MA, USA.
authors.forename: Ashkan
authors.initials: A
authors.lastname: Vaziri
keywords: beam-column; cellular structure; in-plane loading; instability