True-Load载荷反求算法研究与应用
Research and Application on Reverse Evaluation of Load based on True-Load Algorithm
李晓峰 1刘海东 1冯建军 1Timothy G.Hunter2
作者信息
- 1. 大连交通大学 交通运输工程学院,辽宁 大连116028
- 2. Wolf Star Technologies,LLCMilwaukee,WI 53211
- 折叠
摘要
利用True-Load软件提供True-Load载荷反求算法,结合有限元技术从应变测量中获得载荷,对天线基座进行了研究.结果表明,如果想要这种方法取得成效,必须具备两个必要条件:有限元模型与试验对象必须具有较高的一致性;由该软件优化出来的应变片贴片点必须与实际的贴片位置保持一致.研究结果为根据应变反求出载荷这种算法的可靠性提供了一些参考价值.
Abstract
The disagreement between the design load and the real dynamic load acting on a structuremust be a-voided for quality design and engineering.The real load obtained by a force sensor is only valid for simple problem and often for just a subset of the loading degrees of freedom.Attempting to measure load indirectly by strain gauges is difficult because of theload coupling in strain response of the loading degrees of freedom.True-Load software provides a proven mathematical method combined with the finite element technique to obtain loads from strain measurement.This paper studies an antenna baseusing this algorithm.The data obtained from this study indicates that two necessary conditions must exist if this method is effective:the finite element model(FEM)must be sufficiently represent the test object,and the optimal True-Load locations of the strain gauge must match the actual measured locations of strain gauges.This paper provides some reference values for the reliable application of this load calculation from strain gauge measurement method.
关键词
天线基座/True-Load算法/间接反求载荷/应变Key words
antenna base/True-Load algorithm/indirect load measurement/strain gauge引用本文复制引用
基金项目
国家科技部重大专项课题资助项目(2017YFB1201300)
出版年
2018
NETL
NSTL
维普
万方数据