This chapter describes four systems that introduce new pedagogy, address inequities in the classroom and show improved learning with reduced cost. The first system supports inquiry and casebased learning, moving students towards more active learning, engagement, and hypothesis construction. The next system describes mathematics and geometry tutors that positively influence a student’s confidenc...

in this paper, eringen’s nonlocal elasticity and timoshenko beam theories are implemented to analyze the bending vibration for non-uniform nano-beams.  the governing equations and the boundary conditions are derived using hamilton’s principle. a generalized differential quadrature method (gdqm) is utilized for solving the governing equations of non-uniform timoshenko nano-beam for pinned-pinned...

Background: In this paper, the influence of Ramberg-Osgood exponent on ultimate behaviour H-shaped (or I-shaped) aluminium beams subjected to non-uniform bending moment is investigated. Methods: particular, results a wide parametric analysis recently carried out by authors are herein exploited point material properties. The flange slenderness, flange-to-web slenderness ratio, and non-dimensiona...

This paper aims to investigate the buckling and post-buckling analyses of composite cellular beams. For this, numerical model is calibrated by experimental tests via analysis. A parametric study developed, considering six cross sections. each section, opening diameter web post length are varied. Regarding for symmetrical sections, it was concluded that end an important parameter in strength bea...

Tests of deep concrete beams with internal fiber-reinforced polymer (FRP) reinforcement have shown that such members can exhibit lower shear strength than members with conventional steel reinforcement. To model this effect, the current paper proposes an approach based on a two-parameter kinematic theory (2PKT) for conventional deep beams. The 2PKT is built on a kinematic model with two degrees ...

Constrained shape discovery and optimisation are difficult engineering problems. Shape discovery deals with evolving randomly generated solutions into useful intermediate solutions. These intermediate solutions are then optimised to suite their environment. In this paper a Genetic Algorithm (GA) is applied to the problem of finding the optimum cross section of a beam, subject to various loading...

this paper presents a finite element analysis and its related experimental test of corrugated steel web beams subjected to fatigue loading. a particular focus in this study was set on the fatigue failure arising from the web-to-flange welded joint of the corrugated steel web beam. a detailed three-dimensional finite element model which explicitly includes the geometry of the web-to-flange welds...

The aim of this work was to verify the behavior hybrid hardwood glue-laminated beams and possibility replacing Norway spruce (Picea abies) construction elements, especially in roof ceiling structures. samples were six lamellae homogeneous beech (Fagus sylvatica) six-lamellae beech-poplar sylvatica–Poplar spp.) beams; each beam had a cross-section 60 × 120 mm glued with polyurethane adhesive. lo...

This paper presents an analysis of the performance different existing formulations to quantify FRP contribution shear strength RC elements strengthened in by externally bonded sheets. A large database 555 tests has been assembled distinguishing between shape section, existence internal transverse reinforcement and configurations. In general, predictions are more conservative for beams without r...

The kinematics of thin-walled closed cross section beams is studied by comparing the behavior of a closed section with an open section which differs from the former by a ”cut” on one side.