论文部分内容阅读
本文用脉冲函数处理四边简支四块组合型双曲抛物面扁扭壳脊线处的曲率不连续性,根据线性稳定理论导出了与单块四边简支双曲抛物面扁扭壳具有相同形式的临界荷载计算公式,并给出了有关参数的图表。研究表明,这种壳体可能有两种失稳模态,即关于两个对称轴对称或反对称失稳。反对称失稳时,其临界荷载与单壳相同。
In this paper, the curvature discontinuity at the ridge line of a simple quadrilateral parallel quadric torsion shell with four simple supported branches is dealt with by a pulse function. According to the linear stability theory, the critical form with the same form is defined as a quadric simple-supported hyperbolic parabolic flat and twisted shell. Load calculation formulas, and gives a chart of related parameters. Studies have shown that this kind of shell may have two kinds of instability modes, namely symmetrical or anti-symmetrical instability with respect to two symmetrical axes. When the antisymmetrical instability occurs, the critical load is the same as the single shell.