Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 1818 for “"Beams"”.
-
Shear Behavior of Reinforced Concrete Beams and Prestressed Concrete Beams
"In the last decades, developments in high-strength concrete materials are rapid, but codes of practice still limits the concrete compressive strength in design of concrete structures due to a lack of experimental research data. As an effort to overcome the limitation to the use of high strength …
-
Monte Carlo investigations of radiotherapy beams: studies of conventional, stereotactic and unflattened beams
Monte Carlo modelling is a useful method of investigating the electron and photon transport in radiotherapy linear accelerators. The probability of interactions of the materials stored in the cross-section library is considered to be theoretically accurate. Calculations made by Monte Carlo …
-
The influence of secondary effects on beams on elastic foundations and vibrating beams
… the influence of secondary effects for beams resting on elastic foundations and vibrating beams. Two problems have been presented for beams on elastic foundations and a general comparison has been made for an infinite vibrating beam.
-
Crashworthiness of Side Impact Beams
… out into the crashworthiness of side impact beams. Two specific beams were investigated: a commercially used steel beam and a prospective composite beam made from a glass fibre weave within a polypropylene matrix. The components were simply supported and were subjected to quasi-static and …
-
Analysis of Bunched Electron Beams
Made available in DSpace on 2014-12-04T21:02:45Z (GMT). No. of bitstreams: 1 0013462.pdf: 4814432 bytes, checksum: f2f64885453610d5818900dbdba53349 (MD5) Previous issue date: 1955
-
Nonlinear Response of Cantilever Beams
… nonplanar steady-state responses of cantilever beams to direct and parametric harmonic excitations are investigated using perturbation techniques. Modal interactions between the bending-bending and bending-bending-twisting motions are studied. Using a variational formulation, we obtained the …
-
Fatigue of Concrete Beams and Slabs
Strain gages, attached to all specimens tested, indicated cracking in concrete occurred in a narrow band. Regions of high plastic strain were found in the plane of cracking, while adjacent areas experienced decreases in strain levels with cracking. Strain gages indicated cracking in concrete slabs …
-
Fatigue Resistance of Prestressed Concrete Beams
Made available in DSpace on 2014-12-13T19:31:47Z (GMT). No. of bitstreams: 1 7913440.pdf: 5005051 bytes, checksum: c139856fd175e8209a3abe2501fdef60 (MD5) Previous issue date: 1978
-
Large Flexural Oscillations of Thin Beams
Made available in DSpace on 2014-12-12T00:25:47Z (GMT). No. of bitstreams: 1 7212127.pdf: 1768402 bytes, checksum: dd0b6264d58a0c078757f8e159f8c88b (MD5) Previous issue date: 1971
-
Reaction Dynamics in Crossed Molecular Beams
Made available in DSpace on 2014-12-09T17:35:32Z (GMT). No. of bitstreams: 1 6612310.pdf: 6368082 bytes, checksum: 7724222ed97d7a6c021802b4dcd08de5 (MD5) Previous issue date: 1966
-
Debunching in High Density Electron Beams
Made available in DSpace on 2014-12-04T21:02:45Z (GMT). No. of bitstreams: 1 0011549.pdf: 4459138 bytes, checksum: 3c76a8b9e1cd14a198fd645538c95d99 (MD5) Previous issue date: 1955
-
Behaviour of reinforced concrete deep beams
Twenty five model beams were progressively loaded to failure in order to investigate the influence of the following variables on the behaviour of reinforced concrete deep beams : i) Concrete compressive strength ii) Reinforcement iii) Geometry. The model beams were all of 1500mm span, with a depth …
-
Nonlinear vibrations of long slender beams
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1983.
-
Analytical modeling of hybrid composite beams
The main objective of this study is to develop an analytical model to explain the behavior of a hybrid structure under different loading conditions. The model developed for a simply supported beam on moment capacity, stiffness, and deflection can be generalized to deal with any type of material …
-
Arbitrarily curved and twisted space beams
… are given. These relations are not restricted to beams whose cross-sectional dimensions are very small compared to the radius of curvature. Next, a development of the stress resultants is presented. Effects arising from the initial twist of the beam are obtained which are not reflected in the …
-
Parametric spatial modal analysis of beams
… to use this new data for the analysis of beams. Two approaches are investigated: minimum residual methods and boundary condition methods. The minimum residual approaches include autoregressive methods and non-linear least squares techniques. Significant contributions to sample rate …
-
Stability of Castellated Beams During Erection
The increased depth of castellated beams presents stability problems, specifically during erection. During erection the castellated beam must support the weight of an erector and self-weight until the continuous bracing of the floor deck is in place. The stability of the unbraced member is based on …
Page 1 of 91