Design and Characteristics Analysis of a Nonlinear Isolator Using a Curved-Mount-Spring-Roller Mechanism as Negative Stiffness Element

Figure 11

Absolute displacement and acceleration transmissibility of the overload isolator and the linear system with different damping ratios for the overload (underload) system. “Red line”: absolute displacement transmissibility. “Black line”: absolute acceleration transmissibility. “Blue line”: absolute displacement transmissibility of the ideal isolator. “Magenta line”: the linear system. “Green and red dotted line”: unstable solutions. “o” peak amplitude of transmissibility.

(a)

(b)