基于HyperWorks的安装刚度对机柜抗震性能的影响
2017-11-21康文利李倩李冬鹏曹晓政
康文利+李倩+李冬鹏+曹晓政



摘要: 针对通信机柜在抗震测试中常出现柜体倾斜、框架焊接处断裂等不合格的情况,研究机柜底部安装孔位处安装刚度对机柜抗震性能的影响。用Pro/E建立机柜模型,利用HyperWorks对某标准室内通信机柜进行模态分析和结构响应谱分析,模拟安装孔位厚度变化对机柜抗震性能的影响。研究结果表明:安装孔位处局部厚度增大能够使刚度增大,从而提升机柜抗震性能。
关键词: 通信机柜; 抗震试验; 安装孔; 厚度; 模态; 响应谱
中图分类号: TH123.3 文献标志码: B
Influence of installation stiffness on cabinet anti-seismic performance based on HyperWorks
KANG Wenli1, LI Qian1,2, LI Dongpeng2, CAO Xiaozheng1,2
(1. School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071000, Hebei,
China; 2. Baoding TTL Anti-seismic Research Institute of Telecommunication Equipment, Baoding 071000, Hebei, China)
Abstract: As to the issue that the telecommunication cabinet can not pass the anti-seismic test, for example, the cabinet is inclined, the welding place is broken, and so on, the influence of installation stiffness of bottom installation hole on the cabinet anti-seismic performance is studied. The cabinet model is established by Pro/E, and the modal analysis and structure response spectrum analysis on certain standard indoor telecommunication cabinet are carried out using HyperWorks. The influence of variation in thickness at installation hole position on cabinet anti-seismic performance is simulated. The results show that the stiffness can be increased with the increasing of the thickness at the installation hole position, and the cabinet anti-seismic performance can be improved.
Key words: telecommunication cabinet; anti-seismic test; installation hole; thickness; modal; response spectrum
0 引 言
地震是一種危害极大而又无法避免的自然现象,通信设备在传递抗震救灾指挥信息中具有重要的作用,然而通信设备一般都相当昂贵,修复或更换的费用非常高。在通信工程中,通信设备主要的承载体是机柜,研究如何确保其具有足够的抗震能力,以确保救灾通信、减轻灾害造成的社会损失具有重要的现实意义。
目前,关于机柜的研究主要集中在选材和结构优化设计方面,对机柜的抗震性能研究较少。国外对机柜的研究起步较早:STEINBERG[1]对如何设计抗强冲击、振动的电子机柜设备进行一定研究;KAIDY[2]对电子设备如何避免共振问题进行一些探讨。国内学者主要对舰载电子机柜和车载电子机柜等移动电子机柜进行抗振分析和动态特性分析。张卫芬[3]和张艳丽[4]均通过有限元法对机柜进行模态分析,对机柜薄弱环节进行优化;李松磊等[5]对机柜的结构设计和选材进行研究。……
