Abstract In order to study the seismic performance of steel tube bundle composite shear wall with different constructions. Based on failure tests three specimens without end, studs and stiffener, a feasible numerical model is established by ABAQUS. The hysteresis curve energy dissipation coefficient, skeleton ductility were further analyses varying axial compression ratio spacing internal diaph...

Incorporating waste byproducts into concrete is an innovative and promising way to minimize the environmental impact of material while maintaining and/or improving concrete’s mechanical characteristics strength. The proper application sawdust as a pozzolan in building industry remains significant challenge. Consequently, this study conducted experimental evaluation fill material. In particular,...

Establishing a restoring force model is fundamental yet critical task for the analysis of structural responses to earthquakes. Such has substantial impact on results. Composite-shear walls with concealed bracings in steel-tube frames (composite-shear walls) offer several advantages, including convenient construction processes, high-bearing capacity, and excellent ductility. In this study, mecha...

Abstract Critical velocities of a two-layer composite tube under uniform internal pressure moving at constant velocity are analytically determined. The formulation is based on Love–Kirchhoff thin shell theory that incorporates the rotary inertia and material anisotropy. consists two perfectly bonded axisymmetric circular cylindrical layers dissimilar materials, which can be orthotropic, transve...

When an elastic object is pressed, we expect it to resist by exerting a restoring force. A reversal of this force corresponds to negative stiffness. If we combine elements with positive and negative stiffness in a composite, it is possible to achieve stiffness greater than ~or less than! that of any of the constituents. This behavior violates established bounds that tacitly assume that each pha...