火炮制退机关键结构尺寸及公差优化研究  

Research on Optimization for Key Structure Dimension of Gun Recoil Mechanism Considering Tolerance

作　　者：李荣[1] 杨国来[1] 刘宁[1] 葛建立[1] 

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《弹道学报》2016年第4期80-85,共6页Journal of Ballistics

基　　金：国防973计划项目(1503613249);国家自然科学基金项目(11172139)

摘　　要：为探索名义尺寸和公差不能同步优化导致的火炮制退机设计周期长的问题,进行了制退机关键结构尺寸及公差的优化研究,改进了计及公差的区间优化方法。假设公差服从正态分布,构建了基于离散化的区间可能度模型,改进了公差指标,建立了火炮制退机关键结构尺寸及公差的区间优化模型。与传统火炮制退机结构参数优化结果进行了对比,优化得到了制退机关键尺寸的公差,缩短了制退机的设计周期。结果表明,采用基于离散化的区间可能度模型能得到目标性能更优的Pareto最优解,改进的公差指标能更好地反映平均公差和加工精度的关系。In order to explore the long-cycle problem of recoil mechanismJs structure design resulted from that the nominal dimension and tolerance can’ t be optimized simultaneously, an improved interval optimization method considering tolerance was proposed to optimize the key structure dimension of the gun recoil-mechanism. The tolerance was assumed to follow normal distribution, and the discretization-based possibility degree model of interval was established, then the tolerance index was improved. The interval optimization model of the key structure parameters of the gun recoil mechanism considering tolerance was developed. Compared with the traditional structural parameters optimization results of gun recoil- mechanism, the key dimensions of the system were optimized, and the design cycle of the gun recoil- mechanism was shortened. The result shows that the Pareto optimum-solution of better objective- performance can be obtained by applying discretization-based interval- possibility-degree model, and the improved tolerance index can reflect the relation of average tolerance and machining precision.

关 键 词：火炮 制退机 区间可能度 公差等级系数 尺寸优化 

分 类 号：TJ303.4[兵器科学与技术—火炮、自动武器与弹药工程]