【摘 要】
：
Experimental studies on load decay and leak rate of O-rings made of two kinds of silicone rubber are conducted. The results show that the characteristic of load
【机 构】
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Department of Precision Instruments,School of Mechanical Engineering and Automation
【基金项目】
：
国家高技术研究发展计划(863计划)
论文部分内容阅读
Experimental studies on load decay and leak rate of O-rings made of two kinds of silicone rubber are conducted. The results show that the characteristic of load decay is relative to the material and temperature of O-rings; the rate of load decay increases with the rise of temperature; the effects of load decay on leak rate of O-rings are negligible at room temperature, but they are notable at high temperature, and they are related to the material of O-rings. On the basis of study on the theory of load decay and analysis to the results of experiments, a theoretical model is developed to describe the load decay characteristic of O-rings, and it matches the experimental data very well. By the study of time-temperature equivalence of load decay, the interconvertting equation of test data of load decay at different temperatures is obtained.
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