###
工程科学与技术:2020,52(4):124-131
←前一篇   |   后一篇→
本文二维码信息
码上扫一扫!
基于OpenFresco平台混合试验时长研究
(1.同济大学 土木工程防灾国家重点实验室,上海 200092;2.同济大学 地下建筑与工程系,上海 200092;3.广东省交通规划设计研究院股份有限公司,广东 广州 510507)
Study on Test Duration of Hybrid Simulation Based on OpenFresco Platform
(1.State Key Lab. for Disaster Reduction in Civil Eng., Tongji Univ., Shanghai 200092, China;2.Dept. of Geotechnical Eng., Tongji Univ., Shanghai 200092, China;3.Guangdong Communication Planning & Design Inst. Co. Ltd., Guangzhou 510507, China)
摘要
图/表
参考文献
相似文献
附件
本文已被:浏览 2137次   下载 737
投稿时间:2019-12-02    修订日期:2020-02-01
中文摘要: 混合试验为结构抗震研究领域提供了一种创新性的试验研究手段。在混合试验中,试验时长主要取决于数值子结构计算耗时、数据通讯耗时、作动器加载耗时3大因素。不同种类的积分方法的选择以及数值模型的差异,都会导致试验耗时不同,甚至影响混合试验的加载精度。OpenFresco是当前较为通用的一种实现混合试验的平台,但基于OpenFresco平台的以混合试验时长为重点的研究尚不充分。以单层单跨框架模型为分析对象,取钢柱构件为试验子结构,根据时长试验结果系统研究影响混合试验时长的因素。对试验数据进行分析可知,积分方法、模型复杂程度、加载步长是影响混合试验时长的主要因素。根据不同积分方法、模型复杂程度、加载时长等工况进行试验,得到试验时长与试验精度的关系。结果表明:基于OpenFresco平台的混合试验,宜采取显式积分方法或者固定迭代次数Newmark方法,数值模型应进行适当简化以提高试验精度。
Abstract:Hybrid simulation has been regarded as an innovative and feasible solution of conducting anti-seismic test of structures. In hybrid simulations, the test duration mainly depends on numerical calculation duration, data communication duration, and loading duration. The differences in integration methods selection and numerical modelling may lead to a large variation of test durations, which may even affect the accuracy of the test results. OpenFresco is an environmental independent software framework for implementing hybrid tests. However, the research on the test duration of hybrid simulation based on OpenFresco has not been sufficiently studied. A single-storey and single-span frame was analysed in this paper. Specifically, the steel column was selected as the experimental substructure whilst the rest of the model was taken as the numerical substructure. The test results helped to reveal the factors which might influence the duration of hybrid simulation. It could be concluded that integration method, model complexity, and ramp time were the main factors affecting the durations of hybrid simulations. Moreover, the relation between the test duration and test accuracy was also discussed. The results showed that the explicit integration method and the Newmark integration method with fixed steps were recommended in the hybrid simulation based on OpenFresco. Besides, the numerical model should be simplified to improve the test accuracy.
文章编号:201901161     中图分类号:TU323.1    文献标志码:
基金项目:上海市科委重点支撑项目(16DZ1200302)
作者简介:杨澄宇(1978-),男,讲师,博士. 研究方向:桥梁抗震与结构试验技术. E-mail:seismicyang@tongji.edu.cn
引用文本:
杨澄宇,蔡雪松,马原驰,袁勇.基于OpenFresco平台混合试验时长研究[J].工程科学与技术,2020,52(4):124-131.
YANG Chengyu,CAI Xuesong,MA Yuanchi,YUAN Yong.Study on Test Duration of Hybrid Simulation Based on OpenFresco Platform[J].Advanced Engineering Sciences,2020,52(4):124-131.