The classical truss model (or strut-and-tie model) for shear failure of reinforced concrete beams is modified to describe fracture phenomena during failure. The failure is assumed to be caused by propagation of a compression fracture across the concrete strut during the portion of the loading history in which the maximum load is reached. The compression fracture may consist of a band of splitti...

In recent years, the optimization of truss structures has been considered due to their several applications and their simple structure and rapid analysis. DNA computing algorithm is a non-gradient-based method derived from numerical modeling of DNA-based computing performance by new computers with DNA memory known as molecular computers. DNA computing algorithm works based on collective intelli...

One of the primary objectives truss structure design optimization is to minimize total weight by determining optimal sizes members while ensuring structural stability and integrity against external loads. Trusses consist pin joints connected straight members, analogous vertices edges in a mathematical graph. This characteristic motivates idea representing as graph edges. In this study, Graph Ne...

in this paper, matlab code for a recently developed meta-heuristic methodology, the vibrating particles system (vps) algorithm, is presented. the vps is a population-based algorithm which simulates a free vibration of single degree of freedom systems with viscous damping. the particles gradually approach to their equilibrium positions that are achieved from current population and historically b...

To study the fatigue performance of a composite girder with corrugated steel web (CSW) and tube (ST) truss, based on an engineering object, test finite element (FE) analysis were carried out. The failure mode sensitivities hot spot stress to geometric parameters above studied. position maximum crack discussed determined. Furthermore, life evaluation method was discussed. It found that linear ex...

A rotational joint is introduced for use in shape morphing or deployable space truss structures. The joint is a chain mechanism comprising up to six pivoted linkages that provide a compact mechanism for the connection of up to six structures at a node. The total number of degrees of freedom for a constrained joint mechanism with six links is found. A closed chain model is then used to determine...

Design optimization of a class of plane trusses called the N-shaped truss (NST) is addressed. The parametric model of NST presented is intended for real-world application, avoiding simplifications of the design details that compromise the applicability. The model, which includes 27 discrete variables concerning topology, configuration and sizing of the truss, presents a challenging optimization...

Seismic evaluations of many existing deck-truss bridges have revealed the vulnerability of their substructure and members of their superstructure. An innovative retrofit strategy developed by the authors includes replacement of the existing non-ductile end and lower-end bracing with ductile panels by incorporating energy dissipating devices to act as fuses, which can yield and dissipate energy ...

Abstract. Purpose. The work’s aim is to check the stability loss hypothesis with snap-through effect of ribbed-annular dome's upper tier on a full-scale model by experimental tests, and confirming nonlinear tier's work under external load. Methodology. ribbed-ring dome circumscribe in plan as circle diameter 18 m rise ratio span - 1/4, which consisted 8 ribs had 6 tiers height, was taken an dom...

This paper presents solution technique of geometric programming with fuzzy parameters to solve structural model. Here we are considered all fuzzy parameters as a generalized fuzzy number i.e. generalized triangular fuzzy number and generalized trapezoidal fuzzy number. Here material density of the bar, permissible stress of each bar and applied load are fuzzy numbers. We use geometric programmi...