夹层曲板在均匀轴向压缩下的稳定性

Stability of Sandwich Curved Plate Subjected to Uniform Axial Compression

目的研究四边简支具有不等厚度表层的３层夹层曲板在均匀轴向压缩下的稳定性问题，方法采用广义变分原理和布勃诺夫－伽辽金法．结果与结论得到夹层曲板稳定性的临界载荷公式．只要夹层曲板的几何尺寸及各层材料的弹性模量、泊松比已知，即可方便地计算出其临界载荷．

Aim To investigate bucking behavior of a simply supported sandwich curved plate subjected to uniformly distributed axial compression, whose surface layers may have unequal thickness and different materials. Methods Generalized variation principle and Bubnov -Galerkin method were used. Results and Conclusion Critical load for sandwich curved plate was derived . For any sandwich curved plate , if its geometric dimensions, Young's modulus and Poisson's ratio of every layer are known , the critical load may be obtained.