Structural Design And Vibration-Impact Immunity Analysis For Quick-contact Leaf Spring Connector

In the industrial control field,the industrial electrical equipment has developed into multi-modularization for flexible functions switchover.To achieve the mechanical conveniences of shifting the modularized control units,the design for quick-contact connector is required.The industrial electrical equipment is usually under the environment of vibration and impact,the analysis of the immunity of vibration and impact of the connector is essential due to the particularity of connector’s structure.In this dissertation,quick-contact spring connector is analyzed to build the geometrical shape and parameterized following the actual situation.Then the force-deflection equation of the leaf-spring is deduced through the relevant theory of mechanics of materials and differential equation and the degree of accuracy is checked by the calculation of finite element software.The result is that the similarity between the value calculated by finite element software and the one calculated by theoretic equation is no less than 96%Then the optimization function in MATLAB is used to optimize the dimensions of leaf spring through the theory of multi-parameter optimization design and get the optimized parameters following the actual situation.Then the deform process of leaf spring is simulated to confirm the final dimension and mating dimension.Then the dynamic model of leaf spring is analyzed through the theory of modal analysis and the reason why the connection loses efficacy because of resonance is stated.Then the inherent frequency and mode of vibration are calculated by using ANSYS to confirm that it does not lose efficacy at work because of resonance.Then the vibration and impact immunity of the leaf spring at work is analyzed by using LS-DYNA through the theory of dynamic finite element method to confirm that the leaf spring does not separate from the contact under the environment of vibration and impact so that the connector lose efficacy.The vibration and impact immunity of the leaf spring is verified by inspecting the voltage in the circuit made up with the designed leaf spring.Finally,the veracity of the finite element method which is used is evidenced.