车体刚强度结构优化对连发武器射击精度的影响  

Influence of Optimization of Rigid Strength Structure of Vehicle Body on Firing Accuracy of Automatic Weapon

作　　者：白文杰 韩晓明[1] 任广武 于君然 BAI Wenjie;HAN Xiaoming;REN Guangwu;YU Junran(School of Mechanical and Electrical Engineering,North University of China,Taiyuan 030051,China;Inner Mongolia First Machinery Group Co.,Ltd.,Baotou 014030,China)

机构地区：[1]中北大学机电工程学院,山西太原030051 [2]内蒙古第一机械集团有限公司,内蒙古包头014030

出　　处：《中北大学学报（自然科学版）》2024年第2期170-177,共8页Journal of North University of China(Natural Science Edition)

基　　金：装备预研领域基金资助项目。

摘　　要：为减小射击时车体振动对车载连发武器射击精度的影响,建立了某轮式车辆车体有限元模型,对火炮典型射击工况下车体的受力进行了分析,以提高车体结构刚强度为优化目标,在车体后方横向增加变截面梁来改进相应的薄弱结构。车体改进前后的模态测试与射击试验结果表明,经过车体结构优化可有效改善整车环境下对射击精度影响较大的身管一阶模态频率,5连发射击时的射击精度得到有效提高。In order to mitigate the impact of vehicle body vibration on the firing accuracy of vehiclemounted automatic weapon during firing,a finite element model of a wheeled vehicle body was developed to analyze the stress distribution on the vehicle body under typical firing conditions of artillery.With the optimization objective of improving the stiffness of the vehicle body structure,a variable cross-section beam was added transversely at the rear of the vehicle body to improve the corresponding weak structure.By comparing the modal test and shooting test results before and after implementing improvements to the vehicle body,the body structure optimization can effectively improve the first-order modal frequency of the body tube,which has a greater impact on the shooting accuracy under the whole vehicle environment,thereby effectively improving shooting accuracy during 5-round firings.

关 键 词：车体结构优化 连发武器 模态测试 射击精度 

分 类 号：TJ81+0.3[兵器科学与技术—武器系统与运用工程] TJ811+.9