This paper addresses the lack of attention paid by scientific community to optimization timber structures, specifically in context large-span agro-industrial constructions. The study focuses on a three-dimensional roof composed GL32h glulam regular double-tapered beams and purlins. Firstly, MATLAB was employed develop calculation software then run proposed model based genetic algorithms, order ...

This study presents an efficient beam formulation for static and vibration analysis of 2D non-prismatic beams with the kinematic assumptions Timoshenko theory. Beams having complex configurations can be straightforwardly constructed by using B-spline basis functions, which are used descriptions axis sectional height. feature enables free-form strong curvatures to performed conveniently accurate...

In this study, the slope deflection method was presented for structures made of small-scaled axially functionally graded beams with a variable cross section within scope nonlocal elasticity theory. The small-scale effect between individual atoms cannot be neglected when are small in size. Therefore, theory is used throughout. stiffness coefficients and fixed-end moments calculated using initial...

In nonlinear Thomson scattering, the main emission line and its harmonics form a band-like structure due to laser pulse shape induced ponderomotive broadening. We propose use tapered undulators mimic scattering measure intensity-dependent electron mass shift experimentally. also numerically show that effect is observable for realistic beams like in DESY or SKIF.

This study echoes the rising demand for bio-based material in concrete composite structures race to accelerate carbon neutrality construction. Noticing that most previous studies are focused on straight timber or engineered bamboo-to-concrete beams, this developed curved-and-tapered mechanically laminated bamboo-concrete (LBC) T-beams. Six layers of 26 mm thick bamboo panels were glue together ...

The present paper investigates the transverse vibration of a non-uniform axially functionally graded Timoshenko beam with cross-sectional and material properties varying in length direction. Chebyshev collocation method is used to spatially discretize governing partial differential equations motion into time-dependent ordinary terms differentiation matrices. An algebraic eigenvalue equation mat...