Systematic design of tetra-petals auxetic structures with stiffness constraint - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Materials & Design Année : 2019

Systematic design of tetra-petals auxetic structures with stiffness constraint

Résumé

This paper focuses on a systematic isogeometric design approach for the optimal petal form and size characterization of tetra-petals auxetics, considering both plane stress and plane strain conditions. The underlying deformation mechanism of a tetra-petals auxetic is analyzed numerically with respect to several key parameters. Design optimizations are performed systematically to give bounding graphs for the minimum Poisson's ratio achievable with different stiffness constraints. Tunable design studies with targeted effective Poisson's ratio, shear modulus and stiffness are demonstrated. Potential application for functionally graded lattice structures is presented. Numerical and experimental verifications are provided to verify the designs. The out-of-plane buckling phenomenon in tension for thin auxetics with re-entrant features is illustrated experimentally to draw caution to results obtained using plane stress formulations for designing such structures.
Fichier principal
Vignette du fichier
1-s2.0-S0264127519301066-main.pdf (10.02 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-02086703 , version 1 (08-04-2019)
hal-02086703 , version 2 (27-05-2019)
hal-02086703 , version 3 (16-07-2019)

Licence

Paternité - Pas d'utilisation commerciale - Pas de modification

Identifiants

Citer

Zhen-Pei Wang, Leong Hien Poh, Yilin Zhu, Justin Dirrenberger, Samuel Forest. Systematic design of tetra-petals auxetic structures with stiffness constraint. Materials & Design, 2019, 170, pp.107669. ⟨10.1016/j.matdes.2019.107669⟩. ⟨hal-02086703v3⟩
242 Consultations
76 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More