冲击疲劳试验机性能仿真分析与试验验证  

Simulation Analysis and Experimental Verification of Performance of Impact Fatigue Testing Machine

作　　者：田庆敏 Tian Qingmin

机构地区：[1]江苏航空职业技术学院,江苏省镇江市212134

出　　处：《工程机械》2024年第11期48-55,I0023,共9页Construction Machinery and Equipment

基　　金：2023年度江苏高校哲学社会科学研究项目:“基于“以岗导学”的实践技能人才培养模式探索与实践”(2023SJYB2243);2022年度院级课题资助项目(JATC22020105)。

摘　　要：为研究枪械关键受力件的冲击疲劳寿命,研制出一款小吨位卧式冲击疲劳试验机。该试验机利用凸轮-弹簧机构进行加载,通过调节弹簧刚度、预压量改变加载冲量,调节电机转速改变冲击频率。为研究和验证该机构的冲击特性,建立加载机构运动仿真模型,对样机性能进行分析,并利用样机进行冲击加载试验。仿真分析及试验结果表明,试验机的结构和工作原理可行,动作可靠,试验数据与仿真分析数据对比,吻合度较高,能够满足检测零部件冲击疲劳寿命模拟的试验要求。To study the impact fatigue life of key load-bearing parts of firearms,a small tonnage horizontal impact fatigue testing machine is developed.The testing machine uses a cam-spring mechanism for loading,adjusts the spring stiffness and preload to change the loading impulse and adjusts the motor speed to change the impact frequency.To study and verify the impact characteristics of the mechanism,a motion simulation model of the loading mechanism is established,the performance of the prototype is analyzed,and the prototype is used for impact loading tests.Simulation analysis and test results show that the structure and working principle of the testing machine are feasible,the action is reliable,and the comparison between the test data and the simulation analysis data shows a high degree of agreement,which can meet the test requirements for impact fatigue life simulation of parts.

关 键 词：冲击疲劳 虚拟样机 冲击脉冲 碰撞 

分 类 号：TJ206[兵器科学与技术—武器系统与运用工程]