Non-linear Behavior of Curved Sandwich Panels

Carl Christian Berggreen, P. Jolma, J. P. Karjalainen, S. Segercrantz, J. R. Vinson (Editor), Y. D. S. Rajapakse (Editor), L. A. Carlsson (Editor)

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


In this paper the non-linear behavior of curved sandwich panels is investigated both numerically and experimentally. Focus is on various aspects of finite element modeling and calculation procedures. A simply supported, singly curved, CFRP/PVC sandwich panel is analyzed under uniform pressure load and results are compared to test data. A novel test arrangement utilizing a water filled cushion to create the uniform pressure load on curved panel specimen is used to obtain the experimental data. The panel is modeled with three different commercial finite element codes. Two implicit and one explicit code are used with various element types, modeling approaches and material models. The results show that the theoretical and experimental methods generally show fair agreement in panel non-linear behavior before collapse. It is also shown that special attention to detail has to be taken, because the predicted failure load can be strongly dependent on the modeling procedure, material model and boundary conditions.
Original languageEnglish
Title of host publicationProceedings of 6th International Conference on Sandwich Structures
Place of PublicationBoca Raton
PublisherCRC Press
Publication date2003
Publication statusPublished - 2003
Event6th International Conference on Sandwich Structures - Ft.Lauderdale, FL, United States
Duration: 31 Mar 20032 Apr 2003
Conference number: 6


Conference6th International Conference on Sandwich Structures
Country/TerritoryUnited States
CityFt.Lauderdale, FL


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