Research on the Load Bearing and Impact Resistance of a Novel Structure Exhibiting Both Positive and Negative Poisson’s Ratios

Table 2

Initial values of the design variables and optimization range.

Design variable	Variable name	Initial value	Optimization range
(mm)	Upper curved edge height	60	(50, 100)
(mm)	Lower curved edge height	8	(6, 20)
(mm)	Cell width	80	(50, 100)
(mm)	Upper panel thickness	3	(2, 5)
(mm)	Cell wall thickness	3	(2, 5)
(mm)	Lower panel thickness	3	(2, 5)