压力容器2011，Vol.28Issue(10)：1-8,8.DOI:10.3969/j.issn.1001-4837.2011.10.001
顺次及交叉加载方案下螺栓弹性交互作用规律
Elastic Interaction Rules between Bolts during Cross and Sequential Bolt-up Process
喻健良 1闫兴清 1刘明 2伊军3
作者信息
- 1. 大连理工大学化工机械学院,辽宁大连116024
- 2. 中国石油工程设计有限责任公司大连分公司,辽宁大连116011
- 3. 大连锅炉压力容器检验研究院,辽宁大连116013
- 折叠
摘要
Abstract
Achieving uniform preload is difficult by tightening bolts one by one with torque controlled method because of the elastic interaction between bolts. An experimental study was presented in order to determine interaction rules in two tightening strategies: cross pattern and sequential pattern with multipass. The flanges were fastened together using eight M20 × 1.5 stud bolts made of 35CrMoA. Strain gauges and continuous strain readouts were used to monitor blot tensions in real time. Bolt tightening was accomplished by torque wrench. The results indicate that two types of interaction effect exist in the blot - up process: positive effect and negative effect. The combination of the two kinds of effect makes the final load distribution as W shape in cross pattern and N shape in sequential pattern. The features of positive and negative effect were concluded. A simple interaction coefficient method with proper bolt - up process in which the elastic interaction coefficient matrix [A]n × n can be simplified to tridiagonal matrix were introduced.关键词
弹性交互作用/交叉加载/顺次加载/多轮次/均匀预紧载荷Key words
elastic interaction/cross pattern/sequential pattern/multi - pass/uniform preload分类
数理科学引用本文复制引用
喻健良,闫兴清,刘明,伊军..顺次及交叉加载方案下螺栓弹性交互作用规律[J].压力容器,2011,28(10):1-8,8.
