A comparative study of hybrid simulation and dynamical substructuring system schemes for shake table tests

A comparative study of hybrid simulation and dynamical substructuring system schemes for shake table tests
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振动台试验混合仿真与动态子结构系统方案的比较研究

DOI:
10.1088/1742-6596/1264/1/012005
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发表时间:
2019
期刊:
Journal of Physics: Conference Series
影响因子:
--
通讯作者:
Enokida Ryuta
Enokida Ryuta
中科院分区:
--
文献类型:
--
作者:
小幡竜馬,Nguyen Minh Hai;中島章典,藤倉修一;盛川 仁;Enokida Ryuta;山下修平,下里哲弘,田井政行,大城泰樹;Nguyen Minh Hai,中島章典,藤原了,小幡竜馬,藤倉修一,平野優麻;飯山かほり,盛川仁,本山紘希,堀宗朗;新村遼,Nguyen Minh Hai,中島章典,水取未流,藤倉修一;Enokida Ryuta

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在振动台实验中,振动台的动力学受到待测试的试样的强烈影响,特别是当试样非常重时。当子结构实验通过振动台实现时,情况也是如此。本研究以数值方法探讨两种应用于振动台实验的子结构化方案。混合仿真方案是子结构实验中常用的一种方法,它直接将数值子结构的输出作为物理子结构的输入。动态子结构系统(DSS)方案,这需要更复杂的控制设计,确定控制输入,以最小化控制误差所获得的数字和物理子结构的输出。本研究发现,在晃动实验中,混合模拟方案的稳定性对纯时间延迟非常敏感。仿真结果表明,DSS方案比混合仿真方案具有更高的稳定裕度。对于DSS方案中较为复杂的控制器设计所做的努力将在实际控制实践中得到回报。
In shaking table experiments, the dynamics of the shake table is strongly affected by a specimen to be tested, particularly when the specimen is very heavy. This is also the case when substructuring experiments are implemented by the shaking tables. This study numerically examines two substructuring schemes applied in shaking table experiments. Hybrid simulation scheme, which is commonly used in substructuring experiments, directly uses the output of the numerical substructure as the input to the physical substructure. Dynamical substructuring system (DSS) scheme, which requires more complicated control design, determines the control input to minimize control error obtained by outputs of numerical and physical substructures. This study has found that, in shaking experiments, the stability of the hybrid simulation scheme is very sensitive to a pure time delay. It is also found that DSS scheme can provide much higher stability margin against the pure time delay than the hybrid simulation scheme. The effort to rather complicated controller design of DSS scheme will be rewarded at actual control practices.
DOI: 10.1016/j.jsv.2017.06.029
发表时间: 2017
影响因子: 4.7
作者:
R. Enokida;K. Kajiwara
通讯作者: K. Kajiwara
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DOI: 10.1016/j.jsv.2016.09.023
发表时间: 2017
影响因子: 4.7
作者:
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通讯作者: K. Kajiwara