法向应变
In this paper, an improved shell theory is employed to analyze the free vibrations of a spherically isotropic spherical shell submerged in a compressible fluid medium. The effects of shear deformation, rotary inertia and transverse normal strain are included.
采用六模态的中厚壳理论研究了可压缩流体中球面各向同性球壳的自由振动,即在分析中考虑了剪切变形,旋转惯量和横向正应变的影响。
the maximum normal strain of the column of underground structure is big in the middle but is small at both ends.
地下结构柱、桩最大正应变呈中间大、两头小分布;
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