| 爆炸荷载的数值模拟及近爆作用钢筋混凝土板的动力响应 |
| |
| 引用本文： | 龚顺风,朱升波,张爱晖,金伟良.爆炸荷载的数值模拟及近爆作用钢筋混凝土板的动力响应[J].北京工业大学学报,2011,37(2):199-205. |
| |
| 作者姓名： | 龚顺风 朱升波 张爱晖 金伟良 |
| |
| 作者单位： | 1.浙江大学 结构工程研究所, 杭州 310058 |
| |
| 基金项目： | 浙江大学国防预研基金资助项目(ZD8112D1); 浙江省“钱江人才”计划资助项目(QJD0702006) |
| |
| 摘 要： | 采用AUTODYN软件对自由空气中爆炸荷载进行了数值模拟,分析了空气网格尺寸和求解算法对爆炸荷载模拟结果的影响,并与经验预测和TM5-1000值进行了比较分析.研究结果表明,空气单元网格尺寸对爆炸冲击波峰值超压有着显著的影响,对冲量也有一定的影响;Euler-FCT算法较Euler-G算法提高了爆炸荷载的模拟精度,通过增加装药量,可以得到与实际值较吻合的模拟结果.同时采用流固耦合数值模拟方法进行了近爆作用下钢筋混凝土板的动力响应分析,较合理地展现了钢筋混凝土板从混凝土开裂、碎片形成、部分钢筋屈服到板局部震塌破坏的动态演变过程.
|
| 关 键 词： | 爆炸荷载 峰值超压 脉冲 数值模拟 钢筋混凝土板 |
| 收稿时间： | 2009-02-21 |
Numerical Simulation of Blast Loads and Dynamic Response of Reinforced Concrete Slab Subjected to Close-in Explosion |
| |
| GONG Shun-feng,ZHU Sheng-bo,ZHANG Ai-hui,JIN Wei-liang.Numerical Simulation of Blast Loads and Dynamic Response of Reinforced Concrete Slab Subjected to Close-in Explosion[J].Journal of Beijing Polytechnic University,2011,37(2):199-205. |
| |
| Authors: | GONG Shun-feng ZHU Sheng-bo ZHANG Ai-hui JIN Wei-liang |
| |
| Affiliation: | 1.Institute of Structural Engineering, Zhejiang University, Hangzhou 310058, China |
| |
| Abstract: | In the evaluation of anti-explosion performance for significant building and protective engineering structures,a direct simulation using appropriate computational technique is very necessary,wherein the simulation precision of blast loads becomes mainly concerned problem.This paper presents a numerical simulation study on the prediction of the blast load in free air using AUTODYN software,with focus on the sensitivity of the simulated blast load to the mesh grid size and solution algorithms.The results are ... |
| |
| Keywords: | blast load peak overpressure impulse numerical simulation reinforced concrete slab |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《北京工业大学学报》浏览原始摘要信息 |
|
点击此处可从《北京工业大学学报》下载全文 |
