Abstract
Abstract A kinematically non-linear analysis of a flexibly-jointed two-bar frame, subjected to eccentric concentrated loads (near the joint), is presented. The geometry is in general non-uniform in terms of bar length and stiffness. The flexible joint is modelled by a rotational spring connecting one member to the other. The studies include (a) assessment of the effect of a linear rotational spring on the frame behaviour (from a pin connection to a rigid connection) and (b) the behaviour under load of a two-bar frame with flexible joints, which initially are virtually rigid, but as the load increases, the slope of the joint bending moment to relative rotation curve changes (non-linear rotational spring). Furthermore, the effects of load eccentricity and slenderness ratio on the response characteristics are fully assessed for both studies.
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