The Rayleigh- Ritz method was used in conjunction with Navier solution procedure for determining the deflection,bending stress and shear stress in the case of bending analysis,as well as for determining the buckling loads and natural frequencies in the case of linear eigenvalue problems of buckling and vibration.
It is analysed distortional buckling of cold-formed lipped channel section beams and lipped Z-purlins in terms of a simplified model,and it is calculated distortional buckling loads and local buckling coefficients of lipped channel section beams and lipped Z-purlins in terms of finite element method.
In this paper, it deduces linear flexion load according to energy principle, which the case is thin walled pole-shell, and concludes nonlinear formula on flexion load of case approximately, which use reduced means, then formula is verified by finite element program, analysis consult certify that formula is right.
The natural frequencies and buckling loads of these thin-walled structures are computed.
Using the differential equation of equilibrium and an energy method, the flexural and torsional-flexural buckling loads are evaluated.
Equations to determine the buckling loads are developed considering typical end-conditions.
Buckling loads of linearly tapered columns laterally restrained by multiple elastic springs
This paper discusses the numerical methods that were developed for calculating the buckling loads with the corresponding buckled shapes of linearly tapered columns laterally restrained by multiple elastic springs.
The purpose of this study was to evaluate the effect of screw placement on the stiffness, yield load, and ultimate load of hamstring graft fixation in the tibial tunnel.
Tibial fixation stiffness was greater using concentric screw placement (P >amp;lt; 0.05) although there was no statistical difference in yield load, slippage, or ultimate load.
Analysis of yield load, maximum load and stiffness in the single cycle loading test showed no statistically significant differences for hybrid fixation with a 1?mm undersized screw and aperture fixation with a screw matching the size of the tunnel.
The BioCorkscrew group also displayed greater yield load during load to failure testing (492.2?±?204?N vs.
Elongation after 1,000 loading cycles, ultimate failure load, yield load, stiffness, deformation at the yield point, and mode of failure were recorded.