This study analyses the cost structure of the several processes associated with the shipbuilding industry. The analysed productive processes are: the cutting preparation procedures; the several steel plate cutting processes; the processes of hull plates and stiffeners forming; the associated transport and assembling of plates and profiles; and finally the welding processes. The paper includes 2...

at present, the tubular structural systems are mainly used in tall buildings to withstand earthquake loads. although it is possible to analyse the structure by finite element methods using standard three dimensional programs, the system is generally time-consuming and expensive in the primary design work. in this paper, for the analysis of framed-tube systems, a simple method was studied and de...

a comparison between design codes i.e. aci and aisc-lrfd in evaluation of flexural strength of concrete filled steel tubular columns (cfts) is examined. for this purpose an analytical study on the response of cfts under axial-flexural loading is carried using three-dimensional finite elements with elasto-plastic model for concrete with cracking and crushing capability and elastoplastic kinemati...

We study theoretically the propagation of elastic waves in two-dimensional composite media composed of a square array of hollow steel cylinders embedded in water using the finite-difference time-domain method. These composite media constitute a class of acoustic band gap materials with narrow pass bands in their transmission stop bands. The frequency at which the pass band occurs is tunable by ...

This paper studies the applicability of strain-limit criterion in Eurocode 3 to defining limit load for a K-type truss joint, which connects two tubular braces plate chord. The joint is used novel Finnish slim-floor system with integrated load-bearing members High-Strength Steel (HSS). Finite-Element Model (FEM) validated by experimental results scaled-down, isolated specimens made S420 and S70...

To explore the different influence of traveling wave effect on isolated and non-isolated arch bridge, multi-span bridges models are established respectively, three measured seismic waves were selected, under eight kinds apparent velocities multi-point consistent excitations, structural responses two models, including internal force response, rib velocity, pier’s bridge deck acceleration, shear ...

Metal-ceramic coaxial cable Fabry-Pérot interferometric (MCCC-FPI) sensors have been developed using a stainless steel tube and a stainless steel wire as the outer and inner conductors, respectively; a tubular α-alumina insulator; and a pair of air gaps created in the insulator along the cable to serve as weak reflectors for the transmitting microwave (MW) signal. The MCCC-FPI sensors have been...