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本文以高压气体作用下气动溢流阀为研究对象,用AMESim中的PCD库对其进行建模仿真,分析在不同气压、弹簧刚度、阻尼孔直径作用下,阀芯的动态响应特性。研究结果表明:随着气瓶压力值或弹簧刚度的增大,阀芯的动态响应频率减小;阻尼孔直径小范围变化时,对溢流阀动态性能影响不明显。研究成果旨在应用于溢流阀的研制和生产,为溢流阀结构参数设计提供参考。 相似文献
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An example of using ultrasonic method to detect the compactness of complicated concrete-filled steel tube in certain high-rise building was discussed in this study. Because of the particularity of the complicated concrete-filled steel tubular column, the plane detection method and embedded sounding pipe method were adopted in the process of effectively detecting the column. According to the results of the plane detection method and embedded sounding pipe method, the cementing status of steel tube and concrete can be concluded, which cannot be judged by the hammering method in the rectangular steel tube-reinforced concrete. 相似文献
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本文针对青年教师自身特点.结合土木工程专业生产实习的实际情况.对实践教学中教师角色定位做了一定程度的阐述.力图对青年教师主导作用的发挥起到一定的积极作用。 相似文献
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