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Systematic design of tetra-petals auxetic structures with stiffness constraint

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Academic year: 2021

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Fig. 1. (a) Star-shaped auxetics and the mechanism at the vertices. The study in Ref. [1] focuses on (b) the design of exterior petal boundary subjected to a geometric width constraint, while the study in this work focus on (c) the optimal shape form and p
Fig. 2. Parameterization scheme for the tetra-petal-shaped auxetics: (a) interior petal boundary parameters, (b) exterior petal boundary generated by NURBS offsetting, (c) NURBS patch of a parent petal, and (d) connecting bars placement
Fig. 3. Parameter analysis with respect to w 1 and w 2 that control the opening and re-entrant ratio of the petals
Fig. 4. Parameter analysis with respect to w 3 and w 4 that control the curvature of the petal tips
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