螺栓连接的有限元分析

螺栓连接的有限元分析A combination of simple fabrication techniques and speedy site erection have made bolted
endplates one of the most popular methods of connecting members in structural steelwork
frames. Although simple in their use bolted endplates are extremely complex in their analysis
and behaviour. In 1995 the Steel Construction Institute (SCI) and the British Constructional
Steelwork Association (BCSA) jointly published a design guide for moment resisting
connections [1]. The Green Book design method offers increased connection capacity using
a combination of theoretical overstress in the beam compression zone and plastic bolt force
distribution. This paper reports on a PhD research program at the University of Teesside
which uses a combination of full scale testing and materially non-linear three dimensional
finite element analyses (FEA) in order to investigate extended end plate beam-to-column
connections. The FEA analyses, incorporating MYSTRO and LUSAS software [2], use
enhanced strain solid and contact gap elements to model the connection behaviour