A multi-stage high-speed railroad vibration isolation system with %26quot;negative%26quot; stiffness

作者：Lee C M^*; Goverdovskiy V N

来源：Journal of Sound and Vibration, 2012, 331(4): 914-921.

DOI：10.1016/j.jsv.2011.09.014

The intensity of mechanical vibrations generated by a moving train increases at high speeds. Conventional railroad vibration isolation systems are either insensitive or inefficient in the infra-low frequency range, which is the range most hazardous to humans. In this work, an approach for upgrading a multi-stage system for engineers, crew, passengers, and people living near railroads is presented. The approach involves the design of geometrically similar redundant mechanisms with %26quot;negative%26quot; stiffness that could be compactly inserted into all system stages without degrading structure and safety. The approach is implemented in the design of seat suspensions. Finally, a concept relevant to the design of mechanisms for vehicle spring hangers and track bed elements is discussed in terms of the dimensional analysis.

• 出版日期2012-2-13