Synopsis Long-term static load tests were carried out on simply supported and continuous reinforced concrete beams at the N.S.W. Institute of Technology, Sydney, Australia. The instantaneous and time-dependent beam deflections were recorded, together with the time-varying strain distributions at selected cross-sections and the redistribution of bending moments due to creep and shrinkage. In this paper, the measured beam deflections are compared with values predicted by British and American design code methods and by finite element methods. The creep and shrinkage properties used in the predictions were obtained from test specimens and were also calculated in accordance with CP 110:1972, AS 1481–1978, ACI 209:1971 and the CEB–FIP 1978 Model Code. For the samples of concretes examined, the applicability of these predictive methods is discussed.

New version with SI features a more thorough treatment of elasticity and plasticity, many new problems, and several new topics, including energy methods; the use of computers for structural mechanics problems; hydrostatic forces; the use of indicia! notation; newer materials; and additional remarks on fatigue.Experimental Stress Analysis, by J. W. Dally and W. F. Riley, 2nd edition, McGraw-Hill, NY, 1978. 576 pp., $26.00 (tentative). ISBN 015204-7. Solutions Manual (015205-7) Emphasizes theory and covers principal methods: brittle coating, strain gages, photoelasticity, moire. Second edition reflects changes of past decade, non-flammable coatings, ceramic based brittle coatings developments in instrumentation and data processing for strain gaging, and expanded sections on methods. Covers the interests of industry design organizations, special research establishments, academic institutions and manufacturers. CorrosionThe journal provides articles on the latest Soviet advances in research, design and construction of new types of energy machinery, as well as up-to-the-minute progress reports of ongoing projects. Major subject headings are: boiler installations and energy units (for both fossil fuel and nuclear power plant applications); gas turbines; steam turbines; hydro turbines; diesel engines; compressors and pumps; heat exchangers' automation and control systems; and materials and production technology. Finite element methods have progressed from the research departments to the design department. Originally, finite element methods were centered about structural analysis, but have since migrated and expanded to geomechanics, fluid dynamics, heat transfer, and fluid flow problems. Yesteryear, simple problems with simple boundary conditions were the order of the day. Today, the more complicated problems tend to become routine design problems. However, research still continues in determining better finite element formulations in the above disciplines. Theoretical Foundations of NonlinearA symposium was held in Australia which dealt with a number of the above subjects. The conference proceedings were published as a single volume, entitled "Finite Element Methods in Engineering." This volume is divided into six main categories which contain papers dealing with the many applications of the finite element technique. These sections are summarized as follows:Part I: Beam Theory. The five papers report on convergence of finite elements in structural analysis, reduction of numerical errors in finite element solutions, and extension of solutions to more general boundary conditions utilizing unconstrained quadratic functionals. The latter merits further study, since it shows how to couple dissimilar types of finite elements; i.e., linear and quadratic isoparametric types. The section concludes with a basic function in finite elements (patch method and orthogonal collocation), and considers uniform convergence of variational finite elements, including the Ritz method.Part II: Linear Structural Mechanics. This is the longe...

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Synopsis This paper presents a simplified method for the analysis of reinforced concrete frames subjected to sustained service loads. The finite element model used takes into account the non-linearities due to cracking and the time-dependent effects due to creep and shrinkage. It is based on methods widely used by designers at present to analyse short-term linear behaviour. The method is suitable for implementation on microcomputers for applications in the design of medium-rise reinforced concrete frames. Predictions of the behaviour of laboratory-tested frames are shown to be in good agreement with measured values.

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