A study was conducted for the flexural retrofit of an old apartment house composed a reinforced concrete (RC) shear wall structure. For wall, vertical performed to both ends targeting slender improve performance. The materials were steel plate, epoxy, and non-shrink grout, they connected existing using post-installed chemical anchors. at broken retrofitted as much necessary maintain wall’s leng...

In the present study, plate impact pressure±shear friction experiments are conducted to provide insight into timeresolved dry sliding characteristics of metal on metal at normal pressures of approximately 1.5 GPa, slip speeds up to 60 m/s and interfacial temperatures as high as 8008C. The plate impact friction experiments represent a signi®cant improvement over conventional dynamic friction exp...

geometric and material nonlinear behavior of slender webs in i-column girders having stocky flanges under the action of combined lateral and axial loads is investigated. interaction curves corresponding to the application of compressive and shear loads at buckling and ultimate stages for both web plates and column sections are plotted. in addition, the effects of flange and web slenderness rati...

The initiation and propagation of a crack and an adiabatic shear band in three-dimensional finite coupled thermomechanical deformations of a homogeneous and isotropic thermoelastoviscoplastic rectangular 4340 steel plate containing a centrally located through-the-thickness elliptic void and deformed in simple tension are analyzed numerically by using thefinite element computer codeDYNA3D. Initi...

Steel plate shear walls (SPSWs) have advantages such as high elastic stiffness, stable hysteresis behavior, energy absorption capacity, and decent ductility. However, one of the main drawbacks SPSWs is their buckling under lateral loading. To address this issue, a simple practical solution in form using trapezoidal moment connection (PMC) narrow gap between infill columns presented. The PMC wil...

BACKGROUND A primary chondromyxoid fibroma (CMF) arising from sternum is quite uncommon tumor in thoracic surgery. Removal of giant sternal tumors requires extensive resection of the anterior chest wall, and results in deformity and paradoxical movement. CASE PRESENTATION A 40-year-old female presented a progressively enlarging mass of her anterior chest wall. Computed tomography revealed an ...

In this work two approaches against milk fouling in plate heat exchangers were investigated: (i) the temporary increase of the shear forces acting on the surface by superimposing an oscillating flow on the steady flow and thus increasing the mechanical flow forces and (ii) the modification of the energetic surface properties to reduce the adhesive strength between deposit and heat transfer surf...

We describe a simple method for estimating turbulent boundary layer wall friction using the fit of measured velocity data to a boundary layer model profile that extends the logarithmic profile all the way to the wall. Two models for the boundary layer profile are examined, the power-series interpolation scheme of Spalding and the Musker profile which is based on the eddy viscosity concept. The ...