A new method has been developed for accurately and efficiently modeling string-like cable components that change length during an event. String-like components are flexible elements that only support tension loads, not compression nor bending. The method is also applicable to many and various kinds of ropes, tapes, chains and belts. It includes the effects of both variable mass and variable sti...

This study discusses the behavior of ambient-cured circular geopolymer concrete specimens tested under different loading conditions. Twelve were cast and to investigate influence type reinforcement, that is, steel glass fiber-reinforced polymer (GFRP), pitch transverse conditions (concentric axial load, 15 35 mm eccentric four-point bending). The load carrying capacity, confinement efficiency, ...

A justification of heterogeneous membrane models as zero-thickness limits of a cylindral three-dimensional heterogeneous nonlinear hyperelastic body is proposed in the spirit of Le Dret (1995). Specific characterizations of the 2D elastic energy are produced. As a generalization of Bouchitté et al. (2002), the case where external loads induce a density of bending moment that produces a Cosserat...

A numerical study of the elastic-plastic mode-II fracture of adhesive joints is presented in this paper. A traction-separation law was used to simulate the mode-II interfacial fracture of adhesively-bonded end-notched flexure (E.N.F.) specimens loaded in three-point bending, with extensive plastic deformation accompanying failure. The fracture parameters for the traction-separation law were det...

This paper describes an easy-to-implement, proactive control strategy for wind turbines, incorporating constraints on blade loads. The control strategy is aimed for rejecting wind gusts and is based on upwind speed measurements and a new statistical wind gust detection mechanism. The control action comprises simultaneous driveline and collective pitch control with constraints on flapwise bendin...

There has been increased interest recently in feedback methods for reliable , robust, eecient computational methods in mechanics. We will outline the construction of such methods for a class of problems describing bending of plates for certain classes of loads. We emphasize the theoretical performance of this method, such as the selection of basis functions in the dimensional reduction { ensuri...

The authors report clinical studies on lumbar disorders (clinical symptoms, X-ray findings) in athletes in various sports. The sport items were divided into three groups according to the main dynamic load applied to the lumbar region. As a result, over 60% of the athletes suffered from "lumbago", and among them spondylolysis reached the high rate of 27%. Arising from these clinical observations...

Abstract: The present paper concludes via an analytical method to reduced formulae for determining the eigenfrequencies and eigenmodes of multi-span continuous beams with spans of different lengths and bending rigidities in a very easy and efficient way. The rigorous determination of eigenfrequencies and eigenmodes allows us to focus on the derivation of the time function for the forced vibrati...

cost-effective, lightweight, large-scale wind turbine blades. Material costs are continuously changing, and the use of glass fibres (E-, Sand R-glass) and carbon fibre should be explored considering density/cost, specific stiffness and strength. The various fibre angles should also be used to best meet the design requirements. Rather than just a straight blade, various blade geometries should b...