文章介绍了浮动缸套和平均指示压力(indicated mean effective pressure,IMEP)测量方法,并针对浮动缸套法探究了传感器支座振动对测量结果的影响;采用Matlab软件分析了单自由度滞后阻尼在简谐激励下振动系统的输出力与输入力偏离程度,...文章介绍了浮动缸套和平均指示压力(indicated mean effective pressure,IMEP)测量方法,并针对浮动缸套法探究了传感器支座振动对测量结果的影响;采用Matlab软件分析了单自由度滞后阻尼在简谐激励下振动系统的输出力与输入力偏离程度,以表示测量误差大小。仿真结果表明,增加支座等效弹簧刚度与滞后阻尼系数可以降低传感器测量误差,完善浮动缸套法的测量理论,该方法对浮动缸套结构的改装提供了一定的理论指导。展开更多
In order to evaluate the effects of structural control and energy transition for the base-isolation with energy transducer （BIET）, shaking table tests on a steel frame model （BIET system） with scale of 1：4 were c...In order to evaluate the effects of structural control and energy transition for the base-isolation with energy transducer （BIET）, shaking table tests on a steel frame model （BIET system） with scale of 1：4 were conducted and the results were compared with the lead rubber beating （LRB） isolation system for the same model. Then numerical analysis of the system was carried out, in which the improved Wen analytic model was used to simulate the hysteretic law of transducers. The results show that the structural system can transform the partial earthquake energy to hydraulic energy ; furthermore, the effect of structural control can reach or be close to that of the LRB isolation system. The agreements between numerical analysis results and those of shaking table tests demonstrate the accuracy of the numerical model.展开更多
文摘文章介绍了浮动缸套和平均指示压力(indicated mean effective pressure,IMEP)测量方法,并针对浮动缸套法探究了传感器支座振动对测量结果的影响;采用Matlab软件分析了单自由度滞后阻尼在简谐激励下振动系统的输出力与输入力偏离程度,以表示测量误差大小。仿真结果表明,增加支座等效弹簧刚度与滞后阻尼系数可以降低传感器测量误差,完善浮动缸套法的测量理论,该方法对浮动缸套结构的改装提供了一定的理论指导。
基金Sponsored by the Hebei Scientific and Technological Research and Development Plans (Grant No.07215615)
文摘In order to evaluate the effects of structural control and energy transition for the base-isolation with energy transducer （BIET）, shaking table tests on a steel frame model （BIET system） with scale of 1：4 were conducted and the results were compared with the lead rubber beating （LRB） isolation system for the same model. Then numerical analysis of the system was carried out, in which the improved Wen analytic model was used to simulate the hysteretic law of transducers. The results show that the structural system can transform the partial earthquake energy to hydraulic energy ; furthermore, the effect of structural control can reach or be close to that of the LRB isolation system. The agreements between numerical analysis results and those of shaking table tests demonstrate the accuracy of the numerical model.
