介绍了利用DMA+450动态机械分析仪测试高阻尼橡胶动态振动疲劳性能的方法。结果表明: 利用DMA+450动态机械分析仪测试高阻尼橡胶材料的振动疲劳性能可以采用两种方式表征, 即滞后圈图和X-Y轴曲线, 其中滞后圈图表征方式直观、清晰, 有利于科研人员的分析;本试验中的高阻尼橡胶受温度影响较大, 当温度高于40 ℃时, 其疲劳过程会明显加速;该高阻尼橡胶的初始刚度较大, 表现为弹性性能, 微米量级的小振幅对其疲劳性影响较小, 适用于在振幅不大、频率一定的条件下工作。

The test method of dynamic vibration fatigue properties of high damping rubber with DMA+450 dynamic mechanical analyzer was introduced. The results indicate that the vibration fatigue properties of high damping rubber could be characterized in two ways using DMA+450 dynamic mechanical analyzer, namely lag circle diagram and the X-Y axis curve. The characterization of lag circle diagram was intuitive and clear, which was helpful for scientific research analysis. The effect of temperature on high damping rubber was remarkable, and when the temperature was higher than 40 ℃, the fatigue process of the high damping rubber would be accelerated obviously. The initial rigidity of the high damping rubber was larger, which showed little effect of elastic properties and micron level of small amplitude on the fatigue. It was suitable to service under the conditions of little amplitude and certain frequency.