Article contents
Stress concentration factors in countersunk holes
Published online by Cambridge University Press: 04 July 2016
Extract
The use of finite element analysis in the modelling of an unloaded countersunk hole revealed that there is a consistent relationship between the maximum stress concentration factor and the design parameters of the hole — countersunk depth, edge distance, t/d ratio and countersunk angle. It has been shown that countersunk depth and edge distance have a strong influence on the Kt value while the t/d ratio has a lesser effect. Variation of countersunk angles between 90° and 110° was found to have a negligible influence on the maximum Kt values.
It has also been shown that normalising the stress concentration factors of a countersunk hole by dividing the Ktvalues at various countersunk depths by the Ktvalues for a plain hole of similar configuration, enables the stress concentration factors in a countersunk hole to be determined from values in a plain hole. This is very useful since extensive work had been done on stress concentration factors for a plain hole and data are therefore more commonly available.
- Type
- Research Article
- Information
- Copyright
- Copyright © Royal Aeronautical Society 1993
References
- 8
- Cited by