A non-linear finite element program to simulate the behaviour of
infilled frames and plane stress reinforced concrete members under
the action of monotonic and cyclic loading has been developed. Steel
is modelled as a strain hardening plastic material, and in the
concrete model cracking, yielding and crushing are considered. The
separation, sliding, and opening and closing of initial gaps at the
interfaces between the frame and the infill panels are accounted for
by adjusting the properties of interface elements.
The non-linear equations of equilibrium are solved using an
incremental-iterative technique performed under load or displacement
control. The iterative techniques use the standard and modified
Newton-Raphson method or the secant Newton method. An automatic load
incrementation scheme, line searches, and restart facilities are
included.
The capabilities of the program have been examined and
demonstrated by analysing five reinforced concrete panels, a deep
beam, a shear wall, and eight infilled frames. The accuracy of the
analytical results was assessed by comparing them with the
experimental results and those obtained analytically by other workers
and shown to be good.
A study of the effects of some material and numerical parameters
on the results of analyses of reinforced concrete deep beam has been
carried out.
Two techniques have been proposed and used to overcome numerical
problems associated with local strain concentrations which occur with
the displacement control, when path dependent incremental iterative
procedures are used for inelastic materials. The displacement
control provided with these modifications has been shown to be more
efficient than the load control. / Iraqi Government
| Identifer | oai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/3573 |
| Date | January 1989 |
| Creators | Naji, Jamal Hadi |
| Contributors | May, I.M. |
| Publisher | University of Bradford, Department of Civil Engineering |
| Source Sets | Bradford Scholars |
| Language | English |
| Detected Language | English |
| Type | Thesis, doctoral, PhD |
| Rights | <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-nc-nd/3.0/88x31.png" /></a><br />The University of Bradford theses are licenced under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/">Creative Commons Licence</a>. |
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