2026-09-19T22:29:12Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/21472 2023-07-10 col_2142_5131 col_2142_14787 com_2142_5130 com_2142_9630 com_2142_234

Miller, Robert E. Aggour, Hanni 2011-05-07T13:09:36Z 2011-05-07T13:09:36Z 10000-01-01 1994 A new cubic finite element model which can be used for the analysis of thin or moderately thick laminated composite circular cylindrical shells is developed. This model accounts for transverse shear deformation and rotary inertia effects. Unlike conventional shell elements, this new element allows separate rotational degrees of freedom for each layer (hence giving more flexibility than models based on classical lamination theory) but does not require translational degrees of freedom beyond those necessary for a single layer. Continuity of displacements between layers is assumed but not continuity of the traction vectors. In problems where different layers may have to be modeled separately, this element offers an efficient alternative to three-dimensional (solid) elements where many elements would have to be used in the model in order to keep the aspect ratio within acceptable range, or to two-dimensional laminated elements in which in-plane degrees of freedom are not condensed out. The new element shows no evidence of shear locking, at least for radius to thickness ratios up to 200. Hence, reduced/selective numerical integration schemes may not be needed. Numerical results predicted by the new model compare well with results from elasticity, classical lamination theory, and constant shear-angle theory solutions of some sample problems. Made available in DSpace on 2011-05-07T13:09:36Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9416334.pdf: 5231731 bytes, checksum: 0bc704df6c009acd7e939f4cd5878197 (MD5) Previous issue date: 1994 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:51:01Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:23:22-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission ETDs are only available to UIUC Users without author permission U of I Only AAI9416334 (UMI)AAI9416334 http://hdl.handle.net/2142/21472 eng Copyright 1994 Aggour, Hanni Applied Mechanics An axisymmetric cubic finite element for laminated anisotropic cylindrical shells text Mechanical Science and Engineering Theoretical and Applied Mechanics University of Illinois at Urbana-Champaign Dissertation Ph.D.