A new method is presented for identifying the local stiffness of a structure from vibration test data. The method is based on a projection of the experimentally measured flexibility matrix onto the strain energy distribution in local elements or regional superelements. Using both a presumed connectivity and a presumed strain energy distribution pattern, the method forms a well-determined linear...

The purpose of this study is to establish a design method for the splitting strength glued laminated timber beam with two round holes. In paper, proposed by formulating ratio maximum tensile stress perpendicular grain acting around hole as distance between holes decreases, using finite element analysis. Then, three-point bending tests were conducted on wood holes, and experimental calculated va...

A new XAFS beamline NW10A using bending magnet radiation from 6.5 GeV PF-AR has been constructed. NW10A consists of a Si(311) double crystal monochromator and a Pt-coated bent cylindrical focusing mirror and provides focused X-ray beam between 8 and 42 keV. The obtained flux through a 1mm square slit is 1×10 ph/s at 20 keV and 7×10 ph/s at 30keV, which are 20 and 200 times more intense than obt...

A simple flat three-node triangular shell element for linear and nonlinear analysis is presented. The element stiffness matrix with 6 degrees-of-freedom per node is obtained by su~~rn~os~ its bending and membrane stiffness matrices. An updated Lagrangian formulation is used for large displacement analysis. The appl~ation of the element to the analysis of various linear and no&ear problems is de...

this article is concerned with the static analysis of structural cables used in railway overheads. structural analysis computer program named ansys is used for analysis. two effects are considered in the analysis. first one is the bending behavior effect of cables. beam188 in addition to link10 and link180 is used to see the difference in case of additional bending effect. besides, link10 and l...

Using present knowledge of the cell's optical and growth mechanisms, a theoretical bending speed of about 5 degrees min.(-1) is calculated for unilateral irradiation by a single beam of normally incident visible light; this figure is of the magnitude found experimentally. Between beams of light opposed at 180 degrees , the resultant bending speed is given by the difference-to-sum ratio of the l...

In this study, the effects of heat treatment of aluminum alloy on the tube bending process were investigated in the rotary draw bending process. As two experimental and numerical simulation methods were used to determine the wall-thinning, ovality, and spring back for extruded, annealed, and aged AA6063 aluminum alloy tubes in different bending angles and bend radii. Numerical simulations were ...

The optimisation of the design method for verification slender steel beam-columns is still a current issue not only from scientific point view, but also practice. Therefore, main objective this paper comparison suitability established approaches, according to European standards and aluminium structures, on basis numerical simulations. Thus, finite element model was validated experimental analys...

This paper analyzes the effects of structures and loads on the static bending and free vibration problems of bilayer beams. Based on static mechanical equilibrium and energy equilibrium, the static and dynamic governing equations of bilayer beam are established. It is found that the value of the thickness ratio has a significant effect on the static and dynamic responses of the beam, and the st...

This study investigates an analytical beam model to improve the analyses of welded thin plates with welding-induced curved distortions. The addresses rigidity a butt-welded joint and its effect on plate bending structural stress by including rotational spring at end. stiffness, ka, is replaced fixity factor, ?a. validity based assumption small displacement moderate rotation mid-plane plate. Usi...