用加权残值法解缺陷稀加肋旋转壳大变形问题

SOLUTION OF LARGE DEFORMITIES WITH IMPERFECTION SPARSE RIB SHELL BY METHOD OF WEIGHT RESIDUES

用加权残值法解缺陷稀加肋旋转壳的小应变、大转动、大位移问题．本文把肋作为曲梁来处理，推出了肋几何非线性应变阵及肋截面惯性主轴为任意方向时的内力方程．用简便而相对精确的方法解决复杂的大变形壳肋组合结构是本文的特点．

When nylon 610 is heated at different heating rates ( β ), it is shown that the thermal degradation process of nylon 610 is one step reaction in N 2 and two steps in air by means of the TG DTG DTA investigation. The degradation temperatures rises linearly with the increasing of β. The degradation degree and the degradation mechanism of nylon 610 has been discussed according to the heating effect of the reaction.