Eigenfrequency changes of structures due to cracks, notches or other geometrical changes
1982 (English)In: Journal of the mechanics and physics of solids, ISSN 0022-5096, Vol. 30, no 5, 339-353 p.Article in journal (Refereed) Published
A first order perturbation method is presented which predicts the changes in resonance frequencies of a structure resulting from cracks, notches or other geometrical changes. The eigenfrequency changes due to a crack are shown to be dependent on the strain energy of a static solution which is easily obtainable for small cracks and other small cut-outs. The method has been tested for three different cases, and the predicted results correlate very closely to experimental and numerical results.
Place, publisher, year, edition, pages
1982. Vol. 30, no 5, 339-353 p.
Fluid Mechanics and Acoustics
IdentifiersURN: urn:nbn:se:kth:diva-25467DOI: 10.1016/0022-5096(82)90004-7ISI: A1982PP03100004OAI: oai:DiVA.org:kth-25467DiVA: diva2:358715
QC 201010252010-10-252010-10-252010-10-25Bibliographically approved