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首页> 外文期刊>日本マリンエンジニアリング学会誌 >Shaft Center Variation Caused by Compound Deformation and Rubber Creep on Vibration Damper
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Shaft Center Variation Caused by Compound Deformation and Rubber Creep on Vibration Damper

机译:振动阻尼器上复合变形和橡胶蠕变引起的轴中心变化

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摘要

Two group of rubber have been renewed after the begining of service of the vibration damper on the main engine. The first renewal was after 5 years and 8 months from the installation and the second after 7 and half years from the first. The rubber used now is the third group over 2 years from the second. It was found out that the estimated values of shaft center with calculating the difference of the rubber-shrinkage correspond with the measured ones. So, the detailed investigation could be carried out for the variation of shaft center by the compound deformation due to heat, elasticity and plasticity and the creep of the rubber on each of group for long time. It happened sometimes that the variation of shaft center became about 1.0 mm with the difference of the environmental temperature, e.g. such as that of before starting and just after stopping engine. The value is the limit to the engine. Then the early large creep reduce like gentle slope after 10~12 months from setting new one.
机译:在主发动机上的振动阻尼器的服务开始后,两组橡胶已更新。第一次更新是在安装5年和8个月后,从第一个开始的第二个月。现在使用的橡胶是第三组从第二次超过2年。发现轴中心的估计值与计算橡胶收缩差的差异对应于测量的轴心。因此,可以对由于热,弹性和可塑性和橡胶蠕变以及长时间的橡胶的蠕变和橡胶的蠕变来进行详细研究。它有时,轴中心的变化变得约为1.0毫米,环境温度差异,例如,差异。如在停止发动机之后开始的。该值是引擎的限制。然后,早期的大蠕变在10〜12个月后减少了柔和的斜坡。

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