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前言在采用线性理论计算正交异性FRP圆柱壳轴压屈曲临界载荷时,往往理论值与实测值的偏差较大,一般实测值是理论值的1/3～1/2。因此在实际的工程设计中需要通过某种途径,如在实验的基础上对线性理论公式加以修正,即选择某一修正系数。而实测值低于理论值的原因,一般认为是由于壳体的初始缺陷、初始挠度、壳体几何参数或采用的线性理论等因素造成的。
Foreword When using linear theory to calculate the critical load of axial compression buckling of orthotropic FRP cylindrical shells, the deviation between the theoretical and measured values is often large. The measured value is generally 1/3 ~ 1/2 of the theoretical value. Therefore, in practical engineering design, some way needs to be adopted, such as modifying the linear theoretical formula on the basis of experiments, that is, selecting a certain correction coefficient. The measured value below the theoretical value of the reason is generally considered to be due to the initial shell defects, initial deflection, the shell geometry or the linear theory and other factors caused.