武汉工程大学学报2016，Vol.38Issue(4)：382-385,398,5.DOI:10.3969/j.issn.1674-2869.2016.04.013
高温波齿复合垫片的循环压缩回弹性能
Cyclic Compression-Resilience of Flexible Graphite Corrugated Metal Gaskets at High Temperature
摘要
Abstract
The effect of loading speed on the cyclic compression and resilience performance of flexible graphite metal corrugated composite gasket was studied. The stress-deformation curves of the gasket were obtained at the loading rate of 0.5MPa/s and 1MPa/s respectively, under temperature of 500℃. By calculating the compression ratio and modulus, the corresponding compression resilience constitutive equation was fitted. The results show that the compression modulus of the flexible graphite corrugated metal gaskets increases with the loading rates increasing. After the first compression, the compression modulu of the gasket changes a little but it is significantly higher than the initial compression modulus. The maximum compression of the gasket increases with the increase of cycle number, which shows a significant effect of the ratchet wheel. The ratchet deformation of gaskets should be considered to ensure the tightness of bolted-flange joints. And according to the fitted coefficient, the compression resilience performance of this type of corrugated composite gasket can be inferred at different loading rates.关键词
波齿复合垫片/加卸载速率/压缩率/压缩模量Key words
flexible graphite corrugated metal gasket/loading and unloading rate/compression ratio/compres-sion modulus分类
通用工业技术引用本文复制引用
郑小涛,文翔,桑聪,喻九阳,徐建民..高温波齿复合垫片的循环压缩回弹性能[J].武汉工程大学学报,2016,38(4):382-385,398,5.基金项目
国家自然科学基金（51305310）；湖北省教育厅科学研究计划（Q20131506）；武汉工程大学研究生创新基金项目 （）
