BUREAU, MAXIME,KELLER, THIERRY,VENEMAN, JAN F.,VERA MARTIN, CAROLINA
申请号：
CA2905655
公开号：
CA2905655A1
申请日:
2013.03.15
申请国别(地区):
CA
年份:
2014
代理人:
摘要：
The invention relates to an element (1) with variable stiffness controlled by negative pressure, comprising: a sealed casing (10)； a plurality of flexible layers (30, 30a, 30b, 30c, 30d, 30e) in the casing, each layer (30, 30a, 30b, 30c, 30d, 30e) including a first surface (31, 41) and a second surface (32, 42)； and a valve (20) suitable for evacuating the interior of the casing (10). The element is characterised in that: the coefficient of friction between the first and second surfaces (31, 41, 32, 42) of two adjacent layers is greater than 0.5； and the first and second surfaces (31, 41, 32, 42) of two adjacent layers have adhesion properties such that a normal force per unit area of less than 0.07 N/mm2 is required to separate same and/or the energy per unit area required to separate same in the normal direction is less than 6.7 J/m2.
