Abstract The automotive industry's globalization and the widespread adoption of cars as primary transportation modes have spurred significant advancements in tire manufacturing. Consequently, a surplus used tires has accumulated recent years. Concurrently, there been shift towards evaluating life cycles developing robust recycling recovery programs. potential for repurposing valuable resource become critical consideration. In response to environmental concerns stemming from disposal,...

This experimental research investigates the effects of different nano-alumina (NA) percentages partially replaced with ground granulated blast slag (GGBS) and fly ash (FA) using a variety tests, including compressive flexural strengths, flowability, dry density, microstructural analysis (scanning electron microscope, energy dispersive spectrometer, thermogravimetry analysis), water absorption, sorptivity at ages 28 days. All mixture results were also contrasted those obtained from control...

This paper presents a direct method for controlling nodal displacements, internal bar forces, and simultaneously both displacements of prestressable pin-jointed assembly under load. The is aimed at static shape control geometrically sensitive structures through length actuations in selected bars. discusses identification the most effective bars actuation so that desired can be obtained, without incurring violation minimal number actuators minimum those actuators. also used adjustment forces...

Abstract This paper describes a method to control the nodal displacement of prestressable truss structures within desired domains. At same time, stress in all members is unleashed take any value between allowable tensile and critical buckling stress. The shape stresses are controlled by actuating most active members. technique considers members’ initial crookedness, residual stresses, slenderness ratio (S). Furthermore, premeditated so that with an S 200 300 can carry only tension before...

Abstract This review article presents prior studies on controlling shape and stress in flexible structures. The study offers a comprehensive survey of literature concerning the adjustment regulation shape, stress, or both structures emphasizes such control’s importance. control systems is classified into three primary classes: nodal movement control, axial force two classes concurrently. Each class thoroughly assessed, showcasing diverse methods anticipated by various scholars. Furthermore,...

Shape adjustment and stress control can be considered as one of the effective parameters in prestressed cable structures since such are widely constructed nowadays due to their characteristics. The assembly errors applied loads hugely affect cables’ nodal positions delicacy. former could disturb shape, which affects appearance function structure. In contrast, latter may increase some cables above upper limit or induce slack others. Accordingly, a technique has been proposed that combined...

Abstract Traditional shape and stress control of structures use many actuators require enormous time to find reasonable solutions that need designers input specific target displacement stress. This study employs a linear technique static pin-jointed assemblies as theoretical advancement prior works provides comparative analysis against previously established works. The evaluates the proposed method using MATLAB optimum set actuators, SAP2000 verify actuation results obtained through applying...

Fiber-reinforced concrete (FRC) is a type of with added fibers that has become an interesting material for researchers to study its properties and behavior in variety scenarios. Fibers are long, thin, needlelike particles mixed into typical cement paste, mortar, or matrix. Researchers conducted various review studies on the use fiber mixes evaluate changes properties. However, they had certain limitations because only looked at one fiber, how influenced restricted number Others have decided...

A direct and relatively simple method for controlling nodal displacements and/or internal bar forces has been developed prestressable structural assemblies including complex elements ("macro-elements", e.g., the pantographic element), involving Matrix Condensation, in which matrices being built up from of elementary elements. The is aimed at static shape control geometrically sensitive structures. paper discusses identification most effective bars actuation, without incurring violation...

Cable arch stayed bridges are one type of tensile structures, and there increasingly such structures constructed.Their performance relies on how they designed.This can suffer big deflections under load, in this situation the displacements may need to be reduced.Sometimes, it necessary control internal force a specific cable so remains within desired limit.More study done develop techniques that available for adjustments.This paper deals with theoretical experimental adjusting two physical...

The wooden frame constructions are now popular in many developed countries of the world. Many these locations where such buildings constructed exposed to seismic and other shocks which generated by human activities. This paper discusses effect size location openings walls under dynamic loadings. Natural frequencies frames with without have been determined. Three 14 m high different widths, including 3, 6, 12 m, considered. Dynamic analysis has made using finite element method structural...

Spherical domes are picturesque structures built in developed countries to attract tourists.Due horizontal and vertical overloading, the structures' attractive shapes may be disturbed, some members' stress exceed elastic level.In this paper, shape of a deformed double-layer spherical numerical model due simultaneous lateral loadings controlled, meanwhile, number actuators alter length active members is minimized.The nodal displacements outer structure nullified.In addition, was monitored...

This paper investigates the reduction of bending moment in critical members by adding some extra optimum location.Instead enlarging size to resist moment, eight additional are added location reduce members.The total weight proposed structure with is less than that original resists induced moment.Moreover, bars significantly reduces nodal displacements.This effect placing on vertically and/or horizontally loaded egg-shaped single-layer frames.An designed based maximum moment; such frames,...

This work proposes an improved numerical methodology based on the flexibility method to study geometric nonlinearity of space cable structures. The proposed approach makes use Pade approximation enhance performance computation. transformation arrangement is particularly successful in quickly speeding up convergence and obtaining solution when working with complex structures that demonstrate geometrically nonlinear properties. In contrast previous approaches, suggested directly solves problem...