A Trilinear Model for M - θ Curves of Semi-Rigid End-Plate Connections

Abstract

The moment behavior of beam-column connections should be considered in advanced steel space frame analysis. A trilinear model and calculation method were presented. Based on the comparison with the FEM results, it has been proved that the M-θ relationship of semi-rigid end-plate connections can be accurately estimated by this simplified calculation method and satisfy the requirement of structural design. This calculation method is simple and ease of use, it benefits application of this kind of joint in actual structure engineering and provides the basis and reference for design of the semi-rigid connection.

Mechanism of grain refinement and coarsening in undercooled Ni–Fe alloy

“…Both nickel and iron based alloys are importantengineering alloys [12].W ith the developmento fu ndercooled solidification technology, the microstructural evolution of undercooled Fe -Nia lloys has been investigated by Zambon et al [13], Liu et al [14] and Chen et al [15]. However, the above results mainly focused on the enrichmentzoneof Fe.…”