Structural-mode instability can lead to unexpected strut failure
Journal Article
·
· Power Engineering (Barrington)
OSTI ID:250776
This article describes evaluating instability of short, linear-type pipe supports to ensure conservative design. Linear-type pipe supports such as rigid struts and snubbers are normally checked for buckling strength using Euler`s buckling load, which is inversely proportional to the square of the effective column lengths. This check of compression members for buckling load is sufficient when they are supported rigidly at the two ends. However, when the end supports in the orthogonal directions are not quite rigid, there may exist another unstable condition for the compression members, whereby the critical load may be smaller than the Euler load. This condition could occur for pipe supports attached to flexible piping systems, especially when the length of the compression member is very short. Therefore, when the design involves a very short strut, the piping stiffness at the strut location should be evaluated to assure that the specific allowable load provided by strut manufacturers is indeed conservative.
- OSTI ID:
- 250776
- Journal Information:
- Power Engineering (Barrington), Journal Name: Power Engineering (Barrington) Journal Issue: 5 Vol. 100; ISSN POENAI; ISSN 0032-5961
- Country of Publication:
- United States
- Language:
- English
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