Because of the bolted joints between the elastic body and the pressed body in this kind of load cell, the contact between them will have serious influence on the load cell hysteresis.

Experimental results show that, under steady periodic excitation, the isolator has strong nonlinear hysteretic characteristics, the restoring force of the isolator is influenced by the exciting frequency and vibration amplitude and is relative with the deformation history, and the shape of hysteretic loops of the restoring force is related to the stiffness and damping characteristics in the isol.

With the bus fed static excitation system, based on field-test data and using frequency domain analysis, the hysteretic characteristics of excitation system wer.