MULTI-DIMENSIONAL MAGNETIC NEGATIVE-STIFFNESS MECHANISM AND MULTI-DIMENSIONAL MAGNETIC NEGATIVE-STIFFNESS DAMPING SYSTEM COMPOSED THEREOF

摘要

Disclosed are a multi-dimensional magnetic negative-stiffness mechanism and a multi-dimensional magnetic negative-stiffness damping system composed thereof. The multi-dimensional damping system is composed of a positive-stiffness mechanism (2), a multi-dimensional negative-stiffness mechanism, a floating frame (4), a body to be damped (3) and a mounting base (1), wherein the positive-stiffness mechanism (2) is a traditional elastic element, same is connected to the body to be damped (3) and the mounting base (1), and provides supporting forces in an X direction, a Y direction and a Z direction, and a basic damping function. The multi-dimensional negative-stiffness mechanism is composed of at least two negative-stiffness magnetic groups (6). Each of the negative-stiffness magnetic groups (6) can provide one-dimensional or two-dimensional negative stiffness. By means of a series connection of the at least two negative-stiffness magnetic groups (6), a two-dimensional or three-dimensional negative-stiffness effect can be achieved, and the damping performance of the system in multiple dimensions can be improved. By using the multi-dimensional magnetic negative-stiffness mechanism, a large force for bearing the body to be damped (3) is realized, and the function of multi-dimensional high-performance damping is also realized.