Design and vibration reduction performance analysis of biomimetic X-shaped suspension with inerter
Aiming at the problem of vibration reduction performance optimization of tracked vehicle suspension,a bionic X-shaped tracked vehicle suspension with an inerter was designed,by combining the ball screw inerter with the bionic X-shaped structure.Firstly,taking a single suspension as the research object,the vibration analysis is carried out with the displacement transmissibility as the performance indicator.The results show that compared with the traditional spring-damping suspension and bionic X-shaped suspension,the performance of the suspension is better and the main frequency is lower after adding the inerter.When the input excitation is in the range of 5～11 Hz,the displacement transmissibility of the system is the lowest and the vibration reduction effect is the best.Secondly,a set of tracked vehicle half-car model is established,and the nod acceleration of the vehicle is analyzed by using three different levels of random road signals as excitation.Compared with the traditional bionic X-shaped suspension,the nodding acceleration of the inerter suspension is reduced by 9.3%,42.98%and 65.91%respectively.And the higher the road grade,the more complex the road conditions,the lower the suspension nod acceleration,the better the damping effect.The research results provide a reference for the design of new tracked vehicle suspension with better damping effect by using inerter and bionic X-shaped structure.
NETL
NSTL
万方数据
