Dynamic crushing and energy absorption of regular, irregular and functionally graded cellular structures

• Published in: International journal of solids and structures Vol. 48; no. 3; pp. 506 - 516
• Main Authors: Ajdari, Amin, Nayeb-Hashemi, Hamid, Vaziri, Ashkan
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.02.2011; Elsevier
• Subjects: Cellular structure; Cellular structures; Crushing; Density; Dynamics; Energy absorption; Exact sciences and technology; Functionally graded material; Fundamental areas of phenomenology (including applications); Honeycomb; Honeycomb construction; Honeycombs; Inelasticity (thermoplasticity, viscoplasticity...); Mathematical models; Physics; Solid mechanics; Static elasticity (thermoelasticity...); Structural and continuum mechanics; Honeycombs; Energy absorption; Functionally graded material; Cellular structures; Cell structure; High strain; Deformation modulus; Cellular material; Quasi static theory; Wall thickness; Porous material; Modeling; Finite element method; Inelasticity; Elastoplasticity; Honeycomb structure; Energy dissipation; Functionnally graded material; Plasticity; Biomaterial; Density gradient; Crush

The in-plane dynamic crushing of two dimensional honeycombs with both regular hexagonal and irregular arrangements was investigated using detailed finite element models. The energy absorption of honeycombs made of a linear elastic-perfectly plastic material with constant and functionally graded dens...