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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Structural Engineering and Mechanics
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Volume 10, Issue 6 - Dec 2000
Volume 10, Issue 5 - Nov 2000
Volume 10, Issue 4 - Oct 2000
Volume 10, Issue 3 - Sep 2000
Volume 10, Issue 2 - Aug 2000
Volume 10, Issue 1 - Jul 2000
Volume 9, Issue 6 - Jun 2000
Volume 9, Issue 5 - May 2000
Volume 9, Issue 4 - Apr 2000
Volume 9, Issue 3 - Mar 2000
Volume 9, Issue 2 - Feb 2000
Volume 9, Issue 1 - Jan 2000
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Derivation of formulas for perturbation analysis with modes of close eigenvalues
Liu, X.L. ;
Structural Engineering and Mechanics, volume 10, issue 5, 2000, Pages 427~440
DOI : 10.12989/sem.2000.10.5.427
The formulas for the perturbation analysis with modes of close eigenvalues are derived in this paper. Emphasis is made on the consistency of the straightforward perturbation process, given the complete terms of perturbations in the zeroth-order, which is a form of Rayleigh quotient, and in the higher-orders. By dividing the perturbation of eigenvector into two parts, the first-order perturbation with respect to the modes of close eigenvalues is moved into the zeroth-order perturbation. The normality condition is employed to compute the higher-order perturbations of eigenvector. The algorithm can be condensed to a single mode with a distinct eigenvalue, and this can accelerate the convergence of the perturbation analysis. The example confirms that the perturbation approximation obtained from the suggested procedure is in a good accuracy on the eigenvalues, eigenvectors, and normality.
Thick laminated circular plates on elastic foundation subjected to a concentrated load
Sheng, Hongyu ;
Structural Engineering and Mechanics, volume 10, issue 5, 2000, Pages 441~449
DOI : 10.12989/sem.2000.10.5.441
In this study, the state equation for axisymmetric bending of laminated transversely isotropic circular plates on elastic foundation is established on the basis of three-dimensional elasticity. By using the expansions of Bessel functions, an analytical solution of the problem is presented. As a result, all the fundamental equations of three-dimensional elasticity can be satisfied exactly and all the independent elastic constants can be fully taken into account. Furthermore, the continuity conditions at the interfaces of plies can also be satisfied.
Use of the differential quadrature method for the buckling analysis of cylindrical shell panels
Redekop, D. ; Makhoul, E. ;
Structural Engineering and Mechanics, volume 10, issue 5, 2000, Pages 451~462
DOI : 10.12989/sem.2000.10.5.451
Buckling loads are determined for thin isotropic circular cylindrical shell panels subject to radial pressure using the new differential quadrature method. The Budiansky stability theory serves as the basis of the analysis. For this problem involving four boundary lines a two-dimensional approach is used, and a detailed convergence study is carried out to determine the appropriate analysis parameters for the method. Numerical results are determined for a total of twelve cylindrical shell panel cases for a number of different boundary support conditions. The results are compared with analytical and finite element method results. Conclusions are drawn about the technical significance of the results and the solution process.
A computer program for the analysis of reinforced concrete frames with cracked beam elements
Tanrikulu, A. Kamil ; Dundar, Cengiz ; Cagatay, Ismail H. ;
Structural Engineering and Mechanics, volume 10, issue 5, 2000, Pages 463~478
DOI : 10.12989/sem.2000.10.5.463
An iterative procedure for the analysis of reinforced concrete frames with beams in cracked state is presented. ACI and CEB model equations are used for the effective moment of inertia of the cracked members. In the analysis, shear deformations are taken into account and reduced shear stiffness is considered by using effective shear modulus models available in the literature. Based on the aforementioned procedure, a computer program has been developed. The results of the computer program have been compared with the experimental results available in the literature and found to be in good agreement. Finally, a parametric study is carried out on a two story reinforced concrete frame.
Effects of shear deformation on the effective length of tapered columns with I-section for steel portal frames
Li, Guo-Qiang ; Li, Jin-Jun ;
Structural Engineering and Mechanics, volume 10, issue 5, 2000, Pages 479~489
DOI : 10.12989/sem.2000.10.5.479
Based on the stiffness equation of the tapered beam element involving the effects of axial force and shear deformation, numerical investigations are carried out on elastic instability for web-linearly tapered columns with I-section of steel portal frames. Effects of shear deformation on the effective length of the tapered columns with I-section are studied. An efficient approach for determining the effective length of the tapered portal frame columns considering effects of shear deformation is proposed.
Inelastic behavior of standard and retrofitted rectangular hollow sectioned struts -I: Analytical model
Boutros, Medhat K. ;
Structural Engineering and Mechanics, volume 10, issue 5, 2000, Pages 491~504
DOI : 10.12989/sem.2000.10.5.491
This paper is a presentation of a physical model for the elastic-partly plastic behavior of rectangular hollow section pinned struts subjected to static cyclic axial loading and the evaluation of the compressive strength of retrofitted damaged struts. Retrofitting is achieved by welding stiffening plates along the webs of damaged struts. The shape of the elastic and permanent deformations of the strut axis satisfy the conditions at the ends and midspan. Continuous functions of the geometric variables of stress distributions in the yielded zone are evaluated by interpolation between three points along each partly plastic zone. Permanent deformations of the partly plastic region are computed and used to update the shape of the unloaded strut. The necessity of considering geometric nonlinearity is discussed. The sensitivity of the results to the location of interpolation points, the shape of the permanent deformation and material hysteretic properties is investigated.
Inelastic behavior of standard and retrofitted rectangular hollow sectioned struts -II: Experimental study
Boutros, Medhat ; McCulloch, James ; Scott, Damian ;
Structural Engineering and Mechanics, volume 10, issue 5, 2000, Pages 505~516
DOI : 10.12989/sem.2000.10.5.505
This paper is a presentation of an experimental study about the elastic-partly plastic behavior of rectangular hollow steel pinned struts subjected to static cyclic axial loading and the evaluation of the compressive strength of retrofitted crooked struts. Retrofitting is achieved by welding stiffening plates along the webs of damaged struts. The material follows a quasi-kinematic hardening hysteresis path as observed from coupon tests. Test results are compared to those of an analytical model showing a good agreement for both standard and retrofitted struts. The comparison of different stiffener plate dimensions shows that more efficient strengthening is achieved by using long thin stiffeners rather than short thick ones.