本文针对工程机械减振性能较差的特点,研发出了一种工程机械司机座椅专用振动测试台。测试台由振动系统和数控系统两大部分所组成。振动系统采用无强迫导向惯性激振系统产生振动,数控系统采用基于Real-Time Windows Target的快速原型技...本文针对工程机械减振性能较差的特点,研发出了一种工程机械司机座椅专用振动测试台。测试台由振动系统和数控系统两大部分所组成。振动系统采用无强迫导向惯性激振系统产生振动,数控系统采用基于Real-Time Windows Target的快速原型技术进行控制。整个测试台具有波形生成和输出、波形控制和试验运行过程控制等功能,通过图形用户界面进行人机交互。测试台的开发对开展工程机械乘坐舒适性的研究以及进一步改善工程机械司机的工作环境等都具有重要的意义。展开更多
The performance of masonry walls reinforced using innovative polymer grids embedded into thin plaster layers as a tool for the seismic enhancement of brick masonry buildings has been investigated by experimental tests...The performance of masonry walls reinforced using innovative polymer grids embedded into thin plaster layers as a tool for the seismic enhancement of brick masonry buildings has been investigated by experimental tests. A number of diagonal compression, shear compression and out-of-plane tests were executed on sample panels; experimental activities included pseudo-dynamic and shaking table tests on infills and reduced scaled building mock-ups, respectively. The results of the experimental activities are presented and discussed. Experimental campaigns have been supported by theoretical and numerical investigations; based on the experimental data and on the results of detailed numerical simulations, simplified models for the design of the retrofitting intervention are hereinafter proposed. The models：, calibrated on the experimental evidence, properly consider the collapse mechanisms as well as the grid effect in the evolution of the above mentioned mechanisms.展开更多
文摘本文针对工程机械减振性能较差的特点,研发出了一种工程机械司机座椅专用振动测试台。测试台由振动系统和数控系统两大部分所组成。振动系统采用无强迫导向惯性激振系统产生振动,数控系统采用基于Real-Time Windows Target的快速原型技术进行控制。整个测试台具有波形生成和输出、波形控制和试验运行过程控制等功能,通过图形用户界面进行人机交互。测试台的开发对开展工程机械乘坐舒适性的研究以及进一步改善工程机械司机的工作环境等都具有重要的意义。
文摘The performance of masonry walls reinforced using innovative polymer grids embedded into thin plaster layers as a tool for the seismic enhancement of brick masonry buildings has been investigated by experimental tests. A number of diagonal compression, shear compression and out-of-plane tests were executed on sample panels; experimental activities included pseudo-dynamic and shaking table tests on infills and reduced scaled building mock-ups, respectively. The results of the experimental activities are presented and discussed. Experimental campaigns have been supported by theoretical and numerical investigations; based on the experimental data and on the results of detailed numerical simulations, simplified models for the design of the retrofitting intervention are hereinafter proposed. The models：, calibrated on the experimental evidence, properly consider the collapse mechanisms as well as the grid effect in the evolution of the above mentioned mechanisms.
