某型抗冲击波车身结构响应分析及疲劳强度校核  

Structure Response Analysis of Anti-Shockwave Vehicle Body and Fatigue Strength Check

作　　者：方海涛 周云波[1] 王显会[1] 陈晓雅 FANG Haitao;ZHOU Yunbo;WANG Xianhui;CHEN Xiaoya(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《兵器装备工程学报》2018年第9期144-150,共7页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金资助项目(51405232)

摘　　要：以车载榴弹炮的设计参数作为边界条件,计算一种极端恶劣工况下的炮口非定常冲击波流场分布,获得车身表面压力边界条件,采用直接积分法计算了车身结构动态响应,得到车身各个部位的等效应力、等效应变以及疲劳损伤情况。通过仿真结果计算,可以充分认识和了解在炮口冲击波作用下车身结构响应情况,根据车身不同部位的响应对车身结构优化改进。With the designing parameters of the vehicle mounted howitzer,the three-dimensional unsteady shock wave flow field in one extreme working condition is computed,and the computing result is used as the input load of the vehicle＇s FEA model. Direct integration is used to compute the dynamic response of the vehicle body to find the stress,displacement and the fatigue damage. This paper uses CFD and FEA analysis to assess the anti-shockwave performance of the vehicle,and find the weak area of the structure to provide basis for designers to modify and improve the structure.

关 键 词：车载榴弹炮 炮口冲击波 动态响应 计算流体力学 疲劳校核 

分 类 号：TJ33[兵器科学与技术—火炮、自动武器与弹药工程]