典型加筋壁板纯剪切工况有限元模拟

FE-SIMULATION FOR CLASSICAL STIFFENED PANEL UNDER PURE SHEAR LOAD

针对典型加筋壁板纯剪切试验夹具,利用Abaqus软件对该纯剪切工况进行模拟,验证夹具设计的合理性。采用一维、二维和三维单元相结合的方式,显著提高计算效率。从壁板承受面内剪力角度分析加筋壁板的整体受力情况。计算结果表明,整体模型von Mises应力呈现中心对称性,壁板芯边界上距加载端较远区域应力分布均匀,满足纯剪切条件;壁板向加筋条的载荷传递效率较低;夹头螺栓附近应力呈现较好的对称分布。

Fixture design for classical stiffened panel under pure shear load was conducted. The panel assembled with fixtures under uniaxial tension was simulated by Abaqus software to achieve pure shear situation. Trying to improve computational efficiency, the FE （finite element）-model was analyzed comprehensively by 3 D elements combined with 1 D and 2D elements. The stress distribution of the whole model was analyzed by applying shear load in the plane of panel. The results showed that the distribution of the von Mises stress was centrosymmetrical in the whole model. Along the boundary line of stiffened rectangular panel core, the level of several kind of stresses little long away from the loading end was adjacent, respectively. The phenomenon was in accord with pure shear situation. The efficiency of load delivery from panel to reinforcing rib was achieved but low. The distribution of stress in region of loading bolts presented good symmetrical characteristic.