2026-09-20T15:06:59Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/20461 2023-07-10 col_2142_5131 col_2142_14770 com_2142_5130 com_2142_3518 com_2142_234

Schnobrich, William C. Xu, Chunjian 2011-05-07T12:39:54Z 2011-05-07T12:39:54Z 10000-01-01 1991 The finite element method is a very powerful computational technique for computer solution of complex problems. Its formulation can include both geometrical and material nonlinearities at the element level. Unfortunately, the validity of the nonlinear finite element analysis is often limited by the inadequate understanding and modelling of material behavior. In many cases the degree of sophistication of the global structural analysis techniques is far superior to that of the material models being used. This situation is especially true with reinforced concrete structures. As a composite material, reinforced concrete exhibits a highly nonlinear behavior, especially after cracking. Besides material nonlinearities of the constituent materials of steel and concrete, which dominate the pre-cracking response, aggregate interlock, dowel action and bond slip come into the picture of the post-cracking response. In the present study, a constitutive model for reinforced concrete under cyclic loading is formulated. Concrete is modelled as an incrementally orthotropic material while the stress-strain relationship for steel includes yielding, strain hardening and a Bauschinger effect. The adopted multi-crack model, with which a crack law is associated, takes into account the behavior of each crack interface. Based on relevant experimental observations, one particular constitutive law for cracks is developed. To verify the proposed constitutive model, a number of experimental specimens under either monotonic or cyclic loading are analyzed with the analytical results compared with the corresponding test data. Made available in DSpace on 2011-05-07T12:39:54Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9136770.pdf: 5767014 bytes, checksum: 80d585df4e61dffaa33785fc90759b58 (MD5) Previous issue date: 1991 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:44:03Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:19:20-05:00 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 AAI9136770 (UMI)AAI9136770 http://hdl.handle.net/2142/20461 eng Copyright 1991 Xu, Chunjian Engineering, Civil Analytical model for reinforced concrete under cyclic loading text Dissertation Ph.D. Civil and Environmental Engineering Civil Engineering University of Illinois at Urbana-Champaign