共查询到20条相似文献,搜索用时 62 毫秒
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简述了波纹管结构的特点,以工程应用中最为常见的正弦波和直线波管形为例,通过采用有限元方法对各种参数下管形结构的刚度、应力情况进行分析,为对这些管形结构优化设计提供了依据。 相似文献
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空间管件数控数据矢量算法及实现 总被引:1,自引:0,他引:1
介绍了空间管件的管形数据和数控加工数据信息,详细分析了矢量法从管形数据到数控加工数据的转换算法。弯管弯曲受力复杂,理论计算弯曲角和弯曲伸长量困难,采用生产现场的经验数据对数控数据进行了修正,用编程软件Delphi编写软件实现了从管形数据到数控加工数据的自动转换。在弯管机上运行转换的数控加工数据,应用表明该算法稳定,具有较大的实用价值。 相似文献
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分析了PVC双壁波纹管成型杌中成型模块的驱动与导向形式,并对成型模块运行中出现的问题.提出了解决方法。 相似文献
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陈庆贺 《机电产品开发与创新》2014,(2):45-46,41
基于连续采煤机行走架内置分体油箱的设计,提出一种用金属波纹管连通油箱的结构,并对金属波纹管的结构进行设计.通过对金属波纹管的各个要素进行选取,计算得出金属波纹管的疲劳寿命符合设计要求.连续采煤机在生产中的成功使用,进一步证明了金属波纹管在油箱中的应用是可行的. 相似文献
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利用蒙乃尔金属波纹管弹性元件、弹性内、外环,设计了一种结构简单,拆卸、安装方便,具有良好的动态响应性能,在传递较大转矩的同时,保证较高的传动角精度的新型弹性联轴器. 相似文献
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戴明远 《仪表技术与传感器》2003,(2):53-54
介绍了一种墙体中钢筋、金属水管,电线探测器。该探测器采用一个LC振荡器用以检测墙体中各种金属物,例如钢筋、金属水管等。振荡器的输出幅度是用作为幅度探测器的结型场效应管控制的。由高输入阻抗运算放大器和电容构成的采样保持器形成浮动的基淮,于是可实现自动调零,用窗口比较器和LED可大致显示墙体中被测物体与探测器之间的距离,用电磁感应原理来检测墙体中带交流电的火线,其电路简单而可靠。该探测器不用单片机但具有自动调零功能,且具有低价,稳定,实用的优点。 相似文献
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Güne? Nakibo?lu Stefan P.C. Belfroid 《International Journal of Mechanical Sciences》2010,52(11):1458-1470
Whistling behavior of two geometrically periodic systems are investigated: corrugated pipes and a multiple side branch system. In both systems frequency (Helmholtz number) is a non-decreasing piecewise constant function of the Mach number, whose increase on average is approximately linear. The plateaus, lock-in frequencies, of this piecewise constant function correspond to the longitudinal acoustic pipe modes. In both systems pressure fluctuation amplitude changes non-monotonically with Mach number with local maxima that correspond to the lock-in frequencies. A characteristic length, equal to cavity width plus upstream edge radius, yields the smallest discrepancy in the measured peak whistling Strouhal number for both corrugated pipes and multiple side branch system. For both systems the upstream edge radius of the cavity has a strong effect on pressure fluctuation amplitudes. Whistling amplitudes increase by a factor of 3-5 upon rounding off the upstream cavity edges. The radius of the downstream edge has a less pronounced effect on the sound amplitude and frequency. The geometric parameters of the multiple side branch system can easily be modified. This makes the multiple side branch system a convenient tool for making experiments on the effects of various geometric parameters. A number of aspects are addressed with the multiple side branch system such as the effect of pipe termination geometry, source localization, side branch depth to diameter ratio, a gradient in depth along the pipe and hysteresis upon change in the acceleration or deceleration of the flow. 相似文献
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