[1]陈鑫,高轩能,付诗琦.复杂建筑结构环境下冲击波超压的快速估算方法[J].华侨大学学报(自然科学版),2021,42(1):48-55.[doi:10.11830/ISSN.1000-5013.202004011]
　CHEN Xin,GAO Xuanneng,FU Shiqi.Rapid Estimation Method of Shock Wave Overpressure in Complex Building Structure Environment[J].Journal of Huaqiao University(Natural Science),2021,42(1):48-55.[doi:10.11830/ISSN.1000-5013.202004011]
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复杂建筑结构环境下冲击波超压的快速估算方法()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第42卷
期数:
2021年第1期
页码:
48-55
栏目:
出版日期:
2021-01-20

文章信息/Info

Title:
Rapid Estimation Method of Shock Wave Overpressure in Complex Building Structure Environment
文章编号:
1000-5013(2021)01-0048-08
作者:
陈鑫1; 2;  高轩能1;  付诗琦1
1. 华侨大学 土木工程学院, 福建 厦门 361021;2. 福建农林大学 交通与土木工程学院, 福建 福州 350002
Author(s):
CHEN Xin1; 2;  GAO Xuanneng1;  FU Shiqi1
1. College of Civil Engineering, Huaqiao University, Xiamen 361021, China; 2. College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
关键词:
爆炸;  低成本;  快速估算;  冲击波超压;  修正系数;  网格密度
Keywords:
explosion;  low-cost;  rapid estimation;  shock wave overpressure;  correction coefficient;  mesh density
分类号:
O382;TU13
DOI:
10.11830/ISSN.1000-5013.202004011
文献标志码:
A
摘要:
为解决复杂建筑结构环境下,冲击波模拟成本与计算精度之间的矛盾,提出利用低成本建模提取超压,再通过修正获得高精度超压的快速估算方法.首先,通过建模分析入射超压的模拟误差,给出精细网格密度下限值λlim;然后,进一步大量建模,对超出λlim限值的粗网格模拟超压进行修正,并拟合出超压修正系数公式;最后,利用修正系数进行超压估算与验证.研究结果表明:超压模拟误差随着网格密度的增大而减小;利用低成本粗网格建模模拟并加以修正后获得的估算超压值与理论值、试验实测值的误差较小;粗网格模型估算超压值的计算精度与高成本精细网格模型相当.
Abstract:
In order to solve the contradiction between cost of shock wave simulation and accuracy of calculation in complex building structure environment, a rapid estimation method of overpressure was proposed, which used low-cost model to extract overpressure, and then obtained high-precision overpressure by correction. Firstly, the simulation error of incident overpressure was analyzed by modeling, and the lower limit of mesh density λlim was given. Then a large number of models were built to revise the overpressure simulated by the coarse mesh, and the overpressure correction coefficient formula was fitted. Finally, the overpressure was estimated and verified by the correction coefficient. The results show that the errors decrease with the increases of mesh density. The results show that the errors decrease with the increases of mesh density. There are small errors between the calculated overpressure value and the theoretical value or the measured value. The precision of overpressure value estimated by coarse mesh model is equal to that of high cost fine mesh model.

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相似文献/References:

[1]吴彦捷,高轩能.爆炸冲击波数值模拟及超压计算公式的修正[J].华侨大学学报(自然科学版),2014,35(3):321.[doi:10.11830/ISSN.1000-5013.2014.03.0321]
　WU Yan-jie,GAO Xuan-neng.Numerical Simulation for Explosion Shock Waves and Correction of Calculation Formula of Overpressure[J].Journal of Huaqiao University(Natural Science),2014,35(1):321.[doi:10.11830/ISSN.1000-5013.2014.03.0321]
[2]陈鑫,高轩能.炸药近地爆炸的数值模拟及影响参数的分析[J].华侨大学学报(自然科学版),2014,35(5):570.[doi:10.11830/ISSN.1000-5013.2014.05.0570]
　CHEN Xin,GAO Xuan-neng.Numerical Simulation and Analysis of Influence Parameters for Explosions Near Ground[J].Journal of Huaqiao University(Natural Science),2014,35(1):570.[doi:10.11830/ISSN.1000-5013.2014.05.0570]

备注/Memo

备注/Memo:
收稿日期: 2020-04-03
通信作者: 高轩能(1962-),男,教授,博士,博士生导师,主要从事钢结构及工程结构灾害控制的研究.E-mail:gaoxn117@sina.com.
基金项目: 国家自然科学基金资助项目(51278208); 福建省教育厅科研基金资助项目(KLA19018A); 福建省科技计划重点项目(2018Y0063)
更新日期/Last Update: 2021-01-20