Steel structures are becoming more common in engineering construction as steel possesses excellent ductility, but members often vulnerable to buckling, especially under seismic or cyclic loading. Hollow structural sections (HSS) buckle locally loading due their thin walls and the need for rehabilitation strengthening is increasing. In present study, circular hollow section (CHS) have been stren...

A microscopic framework for developing phenomenological constitutive models was recently developed for granular materials. The plastic strains are computed from relative sliding and rolling of particles, and the resulting microscopic theory is called the sliding-rolling theory. Within this framework, a phenomenological constitutive model was then developed to describe the anisotropic stress-str...

In this study, non-linear behavior of diagonally stiffened steel plate shear walls as a seismic resisting system has been investigated, and theoretical formulas for estimating shear strength capacity of the system have been proposed. Several validated analytical finite element models of steel shear walls with various stiffener dimensions are generated to verify and compare the analytical and th...

We present a new mechanism--discovered using molecular dynamics simulations--that leads to complete healing of nanocracks. This mechanism relies on the generation of crystal defects known as disclinations by migrating grain boundaries. Crack healing by disclinations does not require any compressive loads applied normal to the crack faces and even occurs under monotonic tensile loading. By closi...

Magnetorheological (MR) gel, an analog of MR fluid, is a novel kind magnetic-responsive material. In this article, the influence quasi-statically monotonic loading and periodically cyclic on normal stress behavior gel (MRG) systemically investigated. Firstly, carbonyl iron powder (CIP) soft polymer were adopted for fabrication MRG. Then, variations with shear strain tested under different excit...

Abstract This article presents the study of pull-out method and behavior cementitious matrix under loading. Using finite element analysis to investigate interfacial debonding performance allows us grasp experiment’s estimated values. The mechanical bonding is determined using a Scanning Electron Microscopy SEM image. slippage during load varies depending on grade whether recycled steel strand h...