Experimental Investigation of Load Decay of the Seal O-Ring
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摘要: 对两种硅橡胶材料O形圈的载荷衰减规律进行了试验研究,结果发现,O形圈的载荷衰减规律与O形圈材料的性能有关;温度对O形圈的衰减规律也有很大影响,温度越高,O形圈的载荷衰减速度越快.在试验的基础上对O形圈载荷衰减的理论模型进行了研究,采用无穷多个Maxwell模型并联的方式,找到了一个能较好地表示O形圈载荷衰减规律的模型.Abstract: Experimental research on load decay of two kinds of O-ring made of different silicone rubber under different temperature has been conducted. The results show that the load decay characteristic of the O-ring is related to the material of the O-ring, and temperature can change load decay characteristic, the speed of load decay increases with the rise of O-ring temperature. By the study to the theory of load decay and analysis to the results of experiments, a theoretical model has been conducted to describe the load decay characteristic of the O-ring,it matches the results of the experiments very well.
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Key words:
- silicone rubber /
- loading analysis /
- Maxwell model /
- O-ring
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[1] Clinton R G, Turner J E. Long-term compression effects on elastomeric O-ring behavior[J]. AIAA Journal, 1990,11(10):53~61． [2] Bower M V. Design and analysis of seals for extended service life . NASA/ASEE summer faculty fellowship program N94-24408． [3] Ralph Z. Final report for lifetime prediction of materials exposed to the natural space environment . NASA CR-193833． [4] Aklonis J J, MacKnight W J. 聚合物粘弹性引论[M].北京:科学出版社, 1998． -
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