A Combined Softening and Hardening Mechanism for Low Frequency Human Motion Energy Harvesting Application
Figure 10
(a) Force against displacement and (b) stiffness against displacement curves for nonlinear hardening configuration (left hand side configuration of Figure 4(b)). Configuration 1, mm and mm (solid line); Configuration 2, mm and mm (dotted line); Configuration 3, mm and mm (dashed line).
