Optimal design of infrared sight vibration absorption system
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摘要: 红外瞄具减振系统对红外瞄具承受高强度冲击至关重要:减振效果的好坏直接影响武器的射击精度及可靠性。基于响应面法在Ansys Workbench中对红外瞄具及其减振系统进行参数化建模和有限元分析,模拟200 g冲击载荷下减振系统最大位移响应对结构参数的响应面曲线,进而设置减振连接装置的结构参数对最大位移响应的灵敏度:最大位移响应对结构参数的变化率。以此判断最大位移响应关于结构各参数的敏感性,并指导优化方向。优化分析板簧宽度、高度、厚度等结构参数对最大位移响应的影响规律。结果表明减振元件板簧组的宽度是最敏感的参数。优化分析结果可直接用于指导红外瞄具减振系统的结构设计。Abstract: The vibration absorption system of the infrared sight is very important for the infrared sight to bear high impact. The vibration absorption effect directly affects the shooting accuracy and reliability of the weapon. Based on response surface method, the parametric modeling and finite element analysis of the infrared sight and its vibration absorption were carried out in ANSYS Workbench. The response surface curve of the maximum displacement response of the vibration absorption system to the structural parameters was simulated under the impact load of 200 g, and then the sensitivity of the structural parameters of the vibration absorption connection device to the maximum displacement response was set:the change rate of the maximum displacement response to the structural parameters, which judged the sensitivity of the maximum displacement response to the structural parameters and guided the direction of optimization. The influence of structural parameters such as width, height and thickness of leaf spring on the maximum displacement response was optimized. The results showed that the width of leaf spring group was the most sensitive parameter. The results of optimization analysis could be directly used to guide the structural design of the vibration absorption system of infrared sight.
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Key words:
- infrared sight /
- response surface method /
- vibration absorption /
- optimal design
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