加筋板的大挠度塑性动力响应研究

对加筋板的大挠度塑性动力响应进行了理论研究,应用单轴对称截面的线性化轴力-弯矩交互作用曲线和相关联的塑性流动法则推出了梁达到塑性弦状态所应满足的挠度条件.此外,详细地分析了梁在不同载荷情况下可能的运动模式.最后应用本文理论和有限元软件ANSYS、ABAQUS/Explicit对四边固支单向加筋板结构进行了求解.

Large deformation dynamic plastic response of stiffened plates

The large deformation dynamic plastic response of stiffened plates is theoretically investigated in this paper using a singly symmetric beam model. The deflection condition that a plastic string must satisfy is obtained by the linearized bending moment-axial force capacity interaction curve for singly symmetric sections and associated plastic flow rule. Moreover, the possible motion mechanisms of the beam under different load intensity are analysed in detail. Finally the dynamic plastic response of a one-way stiffened plate with four fully clamped edges is calculated by the theory of this paper and the FEM sofeware ANSYS and ABAQUS/Explicit.