矿用救生舱防爆门抗爆结构安全性数值分析

罗星娜; 黄平; 钱新明

doi:10.11858/gywlxb.2013.06.015

矿用救生舱防爆门抗爆结构安全性数值分析

doi: 10.11858/gywlxb.2013.06.015

北京理工大学爆炸科学与技术国家重点实验室，北京 100081

详细信息

通讯作者:
黄平 E-mail:ph6111@bit.edu.cn

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出版历程
- 收稿日期: 2012-07-25
- 修回日期: 2012-10-10
- 发布日期: 2013-12-15

Simulation Analysis on Structure Safety of Refuge Chamber Door under Explosion Load

State Key Laboratory of Explosion Science & Technology, Beijing Institute of Technology, Beijing 100081, China

摘要

摘要: 为了保证矿用可移动式救生舱防爆门的结构安全性，采用非线性动力分析有限元软件ANSYS/LS-DYNA，分别建立了厚度为10、20和25 mm防爆门的有限元模型，模拟加载峰值压力0.6 MPa、持续时间300 ms的三角形爆炸冲击波，分析了防爆门的最大载荷和变形情况，并对20 mm厚防爆门增加加强筋结构前后的结构响应情况进行了对比。结果表明，防爆门承受爆炸载荷时的最大应力在门板与内表面加强筋的联接位置，最大位移在门板的中部位置，加强筋可以显著减小舱门的最大位移，增加加强筋的20 mm厚防爆门的最大位移由24.47 mm减少至5.25 mm。通过对比不同厚度救生舱防爆门的材料、重量和加工方式等因素，表明20 mm厚的防爆门增加加强筋后具有良好的结构安全性，满足矿用可移动式救生舱的要求。

Abstract: The door of coal mine mobile refuge chamber should keep strong structure during its life cycle. A basic structure of the door was designed. And finite element models of the door were established for numerical simulation, with thickness 10, 20, and 25 mm, respectively. Finite element software ANSYS/LS-DYNA was used in the numerical simulation. Deformation of the door under a triangle explosion shock wave with maximum value for 0.6 MPa and 300 ms duration was calculated. The maximum stress value appears in the connection position between the door plank and reinforced stiffeners. The maximum displacement value appears in the middle of the door plank. Stiffeners have significant effect on the maximum displacement. The maximum displacement of improved chamber door is reduced to 5.25 mm, having a decrease of 19.22 mm. According to the simulation analysis, the door with 20 mm thickness could fulfill the requirements of structure safety.

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