| 摘要 |
The invention relates to an electro-mechanical jack (10) comprising: a movable member (14) provided with linking means (20) and capable of moving in translation in relation to a chassis (12); and an energy-absorption/dissipation structure (28, 30) located on a force path between the linking means (20) and the chassis (12), said structure comprising a porous capillary matrix (40) having open porosity and an associated liquid (42) which has a wetting angle greater than 90 degrees in relation to the matrix (40) and which is selected such that part of the liquid (42) enters the pores of the matrix (40) when the structure is subjected to a pressure above a first pressure level P1 and is spontaneously discharged from the pores of the matrix (40) by capillary action when the structure is subjected to a pressure below a second pressure level P2 which is lower than the first pressure level P1. |
