Theory and finite element simulation analysis of pendulum-shaped spherical friction pendulum support
The finite element software ABAQUS was used to simulate and analyze the bearing of a under pendulum-shaped spherical friction pendulum a vertical load of 700 kN. The effects of the friction coefficient, sliding displacement x, and spring stiffness K on the energy dissipation of the bearing were studied. The hysteresis curves of the bearing parameters and energy dissipation were obtained and compared. Through the simulation results, the following conclusions can be drawn:When the friction coefficient and sliding displace-ment of the bearing are constant, the residual displacement of the bearing decreases as the stiffness increases, with a maximum differ-ence percentage of 1. 95％. This shows that the sliding displacement has a significant effect on the residual displacement of the bearing. The maximum error between the theoretical analysis and numerical simulation is only 0. 16％, indicating good agreement. From the full-ness of the hysteresis curve, it can be seen that the pendulum-shaped spherical friction pendulum bearing has good hysteresis energy dissi-pation performance. When the value of the friction coefficient is between 0. 03 and 0. 1, and the value of sliding displacement is between 50 and 110, the maximum energy dissipation of the bearing reaches 33. 96 kJ. When the spring stiffness K is 200 N·m-1 , the maximum restoring force value of the bearing is 127. 66 kN. The bearing has good isolation effect and can be a good example for engineering appli-cations.
万方数据
维普
