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On critical buckling load estimation for slender transversely cracked beam-columns by the application of a simple computational modelSkrinar, MatjažThis paper brings new insights into the implementation of a simplified computational model in the prediction of buckling load Pcr for slender beam-type structures with a transverse crack. From among ... several approaches discussed, two of them produced applicable results exhibiting considerably good agreement with those values from more precise and complex computational models. In the first approach, the critical load value is obtained from numerical solutions of analytically expressed characteristic equations (obtained from governing differential equations). Although producing excellent results, this approach limits the application since an analytical solution of the governing differential equation can only be obtained for moderate structures. The second approach implements a new cracked beam-columnfinite element, derived at on the basis of a fairly accurate approximation of the governing differential equation's solution. It allows for flexible utilization and also yields the smallest compact computational model, thus exhibiting itself as very suitable for inverse identification problems. Numerical examples covering several structures with different boundary conditions are briefly presented in order to support the discussed approaches. The results obtained using the presented approaches are further compared with those values from either references or more complex models, thus clearly proving the quality of the presented compact FE model.Source: Proceedings of the 16th international workshop on computational mechanics of materials : IWCMM-16 : Lublin, Poland, 25-26 September 2006 (Vol. 43, iss. 1, July 2008, str. 190-198)Type of material - conference contributionPublish date - 2008Language - englishCOBISS.SI-ID - 12927254
Author
Skrinar, Matjaž
Topics
beam columns |
transverse cracks |
stability problems |
buckling load |
computational model |
finite element method
source: Proceedings of the 16th international workshop on computational mechanics of materials : IWCMM-16 : Lublin, Poland, 25-26 September 2006 (Vol. 43, iss. 1, July 2008, str. 190-198)
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Skrinar, Matjaž | 10847 |
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