基于True-Load货车摇枕载荷反求研究
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摘要
为了准确地预测复杂结构的受力性能,提出了一种替代方法来测量载荷,即True-Load载荷反求算法,这种方法有效的利用有限元技术,通过对应变片所测得应变值进行一系列的数学运算,从而求得构件在实际情况下所受的外部载荷值.以该种算法为工具,对货车摇枕进行了研究.依据研究结果可以看出,有限元建模的精确度以及应变片位置的选取对于试验结果具有较大影响,所提出的方法为根据应变反求出载荷的可靠性提供了参考.
In practical engineering applications, various typical design structures are often subjected to complex loads. In order to accurately predict the mechanical performance of complex structures, it is necessary to accurately express the load condition. To obtain the load of a component in practice, a special load sensorcan be used, or the structure of the component can be modified. An alternative method of the inverse calculation algorithm of True-Loadis proposed to measure the load. This method effectively uses finite element technique to obtain the strain value of the strain gauge.A series of mathematical operations are carried out to obtain the external load value of the component in the actual situation. A freight car bolster is studied by using this algorithm. According to the results of the research, the accuracy of the finite element modeling and the selection of strain gauge position have great influence on the experiment results.This study provides some reference values for the reliable application of this load calculation from strain gauge measurement method.
In practical engineering applications, various typical design structures are often subjected to complex loads. In order to accurately predict the mechanical performance of complex structures, it is necessary to accurately express the load condition. To obtain the load of a component in practice, a special load sensorcan be used, or the structure of the component can be modified. An alternative method of the inverse calculation algorithm of True-Loadis proposed to measure the load. This method effectively uses finite element technique to obtain the strain value of the strain gauge.A series of mathematical operations are carried out to obtain the external load value of the component in the actual situation. A freight car bolster is studied by using this algorithm. According to the results of the research, the accuracy of the finite element modeling and the selection of strain gauge position have great influence on the experiment results.This study provides some reference values for the reliable application of this load calculation from strain gauge measurement method.
引文
[1]傅志方.模态分析及其理论[M].上海:上海交通大学出版社,2000.
[2]王勖成,邵敏.有限单元法基本理论和数值方法[M].北京:清华大学出版社,1997.
[3]傅初黎,李洪芳,熊向团.不适定问题的迭代Tikhonov正则化方法.[J]计算数学,2006,28(3):237-246.
[4]云利军,孙鹤旭,雷兆明,等.运动控制网络的研究现状及发展趋势[J].控制工程,2006,23(4):289-293.
[5]SINGIRESU S Rao.Mechanical Vibrations[M].6th editoin,Saddle River:NJ.Pearsion Prentice Hall,2016:455-457.
[6]毛玉明,林剑锋,刘靖华,等.动载荷反演分析技术研究综述[J].动力学与控制学报,2014(2):97-104.
[7]王立.CRH2-300型动车组拖车转向架测力构架方案设计[D].北京:北京交通大学,2009.
[8]周守玉.基于Tikhonov正则化技术的载荷反求方法研究及其应用[D].长沙:湖南大学,2016.
[9]马敬.D-最优设计和Dn-最优设计的算法矶究[D].西安:西安电子科技大学,2013.
[10]KWAK JIN HO,SUNGPYO HONG.Linear Algebra[M].Boston:Birkhauserl,1997.
[11]李晓峰,刘海东,冯建军,等.True-Load载荷反求算法研究与应用[J].大连交通大学学报,2018,39(2):39-42.
[2]王勖成,邵敏.有限单元法基本理论和数值方法[M].北京:清华大学出版社,1997.
[3]傅初黎,李洪芳,熊向团.不适定问题的迭代Tikhonov正则化方法.[J]计算数学,2006,28(3):237-246.
[4]云利军,孙鹤旭,雷兆明,等.运动控制网络的研究现状及发展趋势[J].控制工程,2006,23(4):289-293.
[5]SINGIRESU S Rao.Mechanical Vibrations[M].6th editoin,Saddle River:NJ.Pearsion Prentice Hall,2016:455-457.
[6]毛玉明,林剑锋,刘靖华,等.动载荷反演分析技术研究综述[J].动力学与控制学报,2014(2):97-104.
[7]王立.CRH2-300型动车组拖车转向架测力构架方案设计[D].北京:北京交通大学,2009.
[8]周守玉.基于Tikhonov正则化技术的载荷反求方法研究及其应用[D].长沙:湖南大学,2016.
[9]马敬.D-最优设计和Dn-最优设计的算法矶究[D].西安:西安电子科技大学,2013.
[10]KWAK JIN HO,SUNGPYO HONG.Linear Algebra[M].Boston:Birkhauserl,1997.
[11]李晓峰,刘海东,冯建军,等.True-Load载荷反求算法研究与应用[J].大连交通大学学报,2018,39(2):39-42.