不同冲击角度下联方型网壳的冲击性能  

Performance of Reticulated Shells under Different Impact Angles

作　　者：吴长[1,2] 杨佑佩 王仁红 WU Chang;YANG Youpei;WANG Renhong(Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province,Lanzhou University of Technology,Lanzhou 730050,China;Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education,Lanzhou 730050,China)

机构地区：[1]兰州理工大学甘肃省土木工程防灾减灾重点实验室,兰州730050 [2]西部土木工程防灾减灾教育部工程研究中心,兰州730050

出　　处：《噪声与振动控制》2021年第4期7-12,共6页Noise and Vibration Control

基　　金：国家自然科学基金资助项目(51608245)。

摘　　要：为了研究联方型网壳在不同冲击角度下的变形模式及冲击性能,利用ANSYS/LS-DYNA分析软件建立联方型网壳模型,设计并模拟水平面和竖直面条件下不同冲击角度及不同冲击速度下的冲击工况,根据模拟结果总结联方型网壳结构在不同冲击角度下的6种变形模式,分析冲击力持时、关键杆件应力和关键节点位移随冲击角度和冲击速度的变化规律,研究对结构变形最不利的竖直面中速冲击工况下的结构能量和加速度峰值变化规律,最后提出联方型网壳结构在两个冲击平面的最不利冲击角度。Impact performance of the reticulated shells under different impact angles is studied.The model of the reticulated shell is established by using ANSYS/LS-DYNA.The impact conditions of horizontal and vertical surfaces with different impact angles and different impact velocities are designed and simulated.According to the simulation results,six deformation modes of the reticulated shell structure under different impact angles are summarized.The variation laws of impact forces,key member stresses and key node displacements with impact angles and impact velocities are studied.The structure energy and acceleration peak value change rules in the vertical plane under medium speed impact condition is studied.Finally,the most detrimental impact angles of the reticulated shell structure in two impact planes are proposed.

关 键 词：振动与波 联方型网壳 有限元分析 不同角度冲击 动力响应 变形模式 

分 类 号：TU311.3[建筑科学—结构工程]