Dynamic Characteristic Analysis on the Elastoplastic Spring Operating Mechanism of High Voltage Circuit Breaker with Clearance

doi:10.7652/xjtuxb201607012

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Dynamic Characteristic Analysis on the Elastoplastic Spring Operating Mechanism of High Voltage Circuit Breaker with Clearance

更新时间：2025-07-09

- Dynamic Characteristic Analysis on the Elastoplastic Spring Operating Mechanism of High Voltage Circuit Breaker with Clearance
- Vol. 50, Issue 7, Pages: 75-82(2016)
- 作者机构：
  
  武汉大学动力与机械学院,武汉,430072
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201607012
  CLC： TH113
- Online First：10 July 2016，
  
  Published：2016
- 稿件说明：
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Dynamic Characteristic Analysis on the Elastoplastic Spring Operating Mechanism of High Voltage Circuit Breaker with Clearance[J]. 2016, 50(7): 75-82.
DOI：

Dynamic Characteristic Analysis on the Elastoplastic Spring Operating Mechanism of High Voltage Circuit Breaker with Clearance[J]. 2016, 50(7): 75-82. DOI： 10.7652/xjtuxb201607012.

摘要

基于碰撞理论及Johnson-Cook模型

建立了含间隙某型高压断路器弹簧操动机构有限元弹塑性动力学模型

研究了机械系统中分、合闸过程大功率脉冲诱发的复杂宽带非线性动力学特性

探讨了销轴及轴套挤压变形及失效破坏的产生机理

同时采用动力显示积分法、通过试验测试及能量平衡理论验证了模型的准确性。研究表明:间隙会导致销轴和轴套发生接触碰撞

弹塑性会导致碰撞过程中弹簧操动机构的构件发生挤压变形

运动副间隙和构件弹塑性共同分配操动机构输入能量

需综合考虑才能得到较真实的机构动力学响应; 适当增加间隙会将弹簧操动机构瞬间的部分驱动能量转换成铰接处接触碰撞的能量

由此降低了构件的弹性变形

缓冲了机构冲击振动。该结果可为机械操动机构研究提供参考。

Abstract

An elastoplastic finite element dynamic model for the spring operating mechanism of a high voltage circuit breaker with clearance was established based on the collision theory and Johnson-Cook model. The wide-band nonlinear dynamic characteristics due to the high power pulse in mechanical system were studied. And the mechanism of extrusion deformation and structural failure of pin and sleeve was analyzed. Moreover

the dynamic explicit integration method was used to verify the model

and the accuracy of the model was proved by experimental tests and energy equilibrium theory. Simulation results indicate that the clearance causes the inner contact and impact between the pin and sleeve

and the elastoplastic behavior leads to the extrusion deformation of the components. The input energy of the mechanism is allocated by the clearance and elastoplastic behavior. These factors must be taken into account for obtaining more accurate dynamic responses. The collision energy in joint can be transferred from partial input energy by increasing suitable clearance

thus the elastic deformation and impact vibration will be reduced. This may provide a reference for the research of mechanical operating mechanism.

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references

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