This paper presents a series of tests on cold-formed stainless steel bolted connections. The test specimens were fabricated from three different types of stainless steel, including austenitic stainless steel EN1.4301 (AISI 304) and EN1.4571 (AISI 316Ti having small amount of titanium) as well as lean duplex stainless steel EN1.4162 (AISI S32101). The material properties of the three types of st...

Research on the steel structures with confining of axial expansion in fixed beams has been quite intensive in the past decade. It is well established that the thermal behaviour has a key influence on steel structural behaviours. This paper describes mechanical behaviour of beams with bolted slant end-plate connection with nonsymmetric gravity load, subjected to temperature increase. Furthermore...

Let G be a Lie groupwith Lie algebra g. On the trivial principal G-bundle over g there is a natural connection whose curvature is the Lie bracket of g. The exponential map of G is given by parallel transport of this connection. If G is the diffeomorphism group of a manifold M , the curvature of the natural connection is the Lie bracket of vectorfields on M . In the case that G = SO(3) the motio...

Nanoparticles of a borate nonlinear optical material, K3B6O10Br (KBB), have been fabricated and demonstrated excellent catalytic activity in UV-induced dechlorination of chlorophenols, which are typical persistent organic pollutants. The obtained dechlorination efficiency is 2 orders of magnitude higher than that of a commercial P25 TiO2 catalyst under UV (λ > 254 nm) light irradiation. The non...

With growth the construction technologies, Cold-Formed Steel, CFS, sections are widely used in ordinary steel buildings because of some advantages such as light weight, ease of installation, decrease in cost, and increase in speed of operation. Using the bolted connections for CFS joist is one of the best details for steel structures. The main objective of this study is to conduct an experiment...

Bolted connections are widely used in parallel plates and flanged joints to axially lock using the preload generated by tightening torque constrain radial movements of flanges surface friction between mating surfaces. The depends on micro-asperities surfaces; under influence vibrations other external loads, these asperities tend deform over time, resulting failure connection. Bondura expanding ...

We introduce a differential operator invariant under the symplectic group Sp(2n, C). A connection with a Rankin Cohen bracket for Siegel modular forms of genus n is sketched.

The significant features of the GFRP angle make it one modern construction members for present lattice-type Transmission Line Towers (TLT) made out mild steel. structural with gusset plate connections net-crushing strength are investigated in this study, an emphasis on to transmission line towers. Forty-two specimens single-lap, butt joints bolted considered study. and edge distance have differ...