能障法研究点铆固钢衬壳局部热屈曲问题

Analysis of thermal buckling of point stud steel liner shell with energy barrir method

研究了钢衬壳局部热屈曲的特点、屈曲后的模态、稳定性以及屈曲前和屈曲后的能量变化与温度的关系 ,得到钢衬壳在局部屈曲模态下存在最小能量模态 ,并根据结构稳定的充要条件判别该模态为钢衬壳局部屈曲后的稳定模态 ;提出了求解钢衬壳局部热屈曲温度的能障法 。

This papar analyzed the characteristic of local thermal buckling,the post buckling behavior,the stability and the relation of energy changing of pre buckling and post buckling with temperature of steel liner shell,the minimum energy buckling mode was found and its stability was proved with principle of structure stability;The Energy Barrier method was put forward to obtain the temperature of local thermal buckling of steel liner shell,the relations of Energy Barrier with temperature in different temperature was obtained.