In the paper the buckling of simply supported plates under combined bending, shear and patch loading is studied in this paper with ANSYS, such a stress state occurs in girder supporting over-head crane.
Analytical and experimental studies on the behavior of RC I-beams under combined bending, shear and torsion were conducted by Luccioni et al. (1991, 1996), and a calculation method of ultimate load based on the skew bending theory (Elfgren et al. 1974) was proposed, where the skew bending theory was modified by taking warping torque into account.
This means that the proposed method can accurately predict the ultimate capacities of the U-shaped thin-walled RC beams under combined actions of bending, shear and torsion.
Research into the mechanical response of open thin-walled RC members under combined actions of bending, shear and torsion is quite rare.
The current paper focuses on the investigation of the interaction behaviour of longitudinally unstiffened steel I-girders under the combination of bending, shear and patch loading.
Therefore our research work focuses on the interaction behaviour of longitudinally unstiffened and stiffened steel girders under the combination of bending, shear and patch loading.
According to the theory (Vlasov 1961), under combined actions of bending, shear and torsion, the distributions of internal forces along the beam span, i.e. circulatory torque Tc, warping torque Tω, warping moment Mω, shear force V and bending moment Mb, and the distributions of corresponding stresses around the cross-section are shown in Fig. 3a and b, respectively.
Thus, the mechanical response of the U-shaped thin-walled RC beams under the combined action of bending, shear and torsion should be studied to lay the foundation for the development of a rational design provision.
The softened truss model is also the theoretical model used to simulate the behavior of closed section concrete members under shear (planar softened truss model) (Vecchio and Collins 1981 , 1986 1988; Pang and Hsu 1995; Tadepalli et al. 2015; Liang et al. 2016) as well as under the combined actions of bending, shear and torsion (Rahal and Collins 2003; Rahal 2007; Greene and Belarbi 2009a, b).
