铝合金电力管道爆破试验研究  

Study of Bursting Test on Aluminum Alloy Power Pipes

作　　者：文耀华 蒋俊 姜君 章彬斌 张伯君 WEN Yao-hua;JIANG Jun;JIANG Jun;ZHANG Bin-bin;ZHANG Bo-jun(Nanjing Boiler and Pressure Vessel Inspection Institute,Nanjing 210019,China)

机构地区：[1]南京市锅炉压力容器检验研究院,江苏南京210019

出　　处：《管道技术与设备》2018年第2期5-8,共4页Pipeline Technique and Equipment

基　　金：江苏省质监局科技项目(KJ168359);江苏省重点研发计划(社会发展)(BE2017617)

摘　　要：运用试验结合数值模拟的方法研究了铝合金管道的极限承载能力。对铝合金电力管道进行爆破试验,采用动态应变分析系统对电力管道在打压过程中的应变进行监测。在考虑材料非线性和几何大变形的前提下,利用有限元技术中的Newton-Raphson法和Arc-length法对爆破压力进行预测。对试验和模拟结果对比表明,Newton-Raphson法和Arc-length法都可以预测铝合金管道的爆破压力,所得爆破压力与实际爆破压力误差为9%,与Faupel公式误差(12.3%)相比,有限元方法预测结果更接近实际。The limited load-bearing capacity of aluminum alloy pipes was studied by means of experiments and numerical simulations.A bursting test of aluminum alloy power pipes was performed to monitor the strain of power pipe during pressure rise using dynamic strain analysis system.The Newton-Raphson method and Arc-length method were used to predict the burst pressure considering the non-linearity of the material and large geometric deformation factor.It was found from the comparison between test and simulation that both Newton-Raphson method and the Arc-length method in finite element technology can be used to precisely predict the burst pressure of the aluminum alloy power pipes.The error of blasting presure and actual blasting pressure is 9%,compared with Faupel formula error([BFB]12.3%).It is concluded that the prediction result using finite element method is closer to the actual value.

关 键 词：铝合金 电力管道 应力 应变 爆破压力 Newton-Raphson法 Arc-length法 

分 类 号：TK0[动力工程及工程热物理]