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首页> 外文期刊>Journal of Applied Polymer Science >Rubber's dissipated energy quantification used in vibratory insulation and protection systems
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Rubber's dissipated energy quantification used in vibratory insulation and protection systems

机译：橡胶的振动绝缘和保护系统中使用的耗散能量定量

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In vibratory protection and insulation systems, the major problem consist to choose suitable passive elements (spring, damper, others), which are inserted between the resonator and the exciter which have the role of preventing or reducing the transmission of dynamic forces. This work consists of characterizing a synthetic rubber (SR) sample of hollow circular shape (design requirement) by determining the coefficient of energy dissipation at an average ambient temperature of 20 degrees C with a humidity of 25%. The mechanical load and discharge tests make it possible to draw hysteresis curves through which the dissipation coefficient will be determined, the load values is between 500 and 1000 N, with 30, 60, and 90 mm/min loading speeds and a number of cycles 2, 3, and 5, these values have been chosen so as not to cause the effect of cyclic hardening and softening and also to take into consideration, that the vibration limits movement at 3 cycles, which makes this test different from other tests such as fatigue. The processing of different curves, allows to determine energy dissipation coefficient of rubber specimen and also to examine its variation as a function of load, loading speed, and number of cycles; it is possible to determine other characteristics from this coefficient, such as, damping ratio, dynamic amplification factor, and so on, necessary to study efficiency of protection systems, design, and manufacture, based on the curve of transmissibility of dynamic forces to evaluate performance rubber conditions use.
机译：在振动保护和绝缘系统中，主要问题在于选择合适的无源元件（弹簧、阻尼器等），它们插入谐振器和励磁机之间，起到防止或减少动力传递的作用。这项工作包括通过测定平均环境温度为20℃、湿度为25%时的能量耗散系数来表征空心圆形合成橡胶（SR）样品（设计要求）。机械载荷和放电试验可以绘制迟滞曲线，通过该曲线可以确定耗散系数，载荷值在500和1000 N之间，加载速度为30、60和90 mm/min，循环次数为2、3和5。选择这些值时，应避免引起循环硬化和软化的影响，并考虑：，振动限制了3个循环的运动，这使得该试验不同于其他试验，如疲劳试验。通过对不同曲线的处理，可以确定橡胶试样的能量耗散系数，还可以检查其随载荷、加载速度和循环次数的变化；根据动态力的传递率曲线，可以根据该系数确定研究保护系统、设计和制造效率所需的其他特性，如阻尼比、动态放大系数等，以评估橡胶使用条件下的性能。

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