Development of a servo-hydraulic earthquake actuator for the Cambridge Turner beam centrifuge
Development of a servo-hydraulic earthquake actuator for the Cambridge Turner beam centrifuge
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DOI：
10.1680/ijpmg.11.00013
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发表时间：
2012-06
影响因子：
1.9
通讯作者：
G. Madabhushi;S. Haigh;N. Houghton;Eric Gould
中科院分区：
文献类型：
--
作者：
G. Madabhushi;S. Haigh;N. Houghton;Eric Gould
自20世纪70年代末以来，剑桥大学一直在进行动态离心机建模。在此期间，开发了三种不同的机械地震执行器。本文介绍了一种新型伺服液压地震执行器的研制。解释了基本的设计原则，以及实施这些设计以匹配剑桥已有35年历史的特纳梁离心机的现有服务和系统的必要性。此外，在设计中还利用了特纳梁式离心机的一些特点。本文还解释了为产生真实的地震运动而开发的致动器和控制系统的机械制造。最后，介绍了这种新型伺服液压地震执行器的性能，并基于大范围的地震输入运动对其进行了评价。
Dynamic centrifuge modelling has been carried out at Cambridge since the late 1970s. Over this period, three different mechanical earthquake actuators were developed. In this paper the development of a new servo-hydraulic earthquake actuator is described. The basic design principles are explained along with the need to carry out these designs to match the existing services and systems of the 35 year old Turner beam centrifuge at Cambridge. In addition, some of the features of the Turner beam centrifuge are exploited in the design of this new earthquake actuator. The paper also explains the mechanical fabrication of the actuator and the control systems that were developed in order to generate real earthquake motions. Finally, the performance of this new servo-hydraulic earthquake actuator is presented and assessed based on a wide range of earthquake input motions.