... 半群理论：semigroup theory 板壳理论：plate and shell theory 板壳非线性力学：Nonlinear Mechanics of Plate and Shell ...
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There are three approaches in numerical simulation of plate and shell structures: plate and shell theory approach, degenerated continuum approach, direct three-dimensional(3D) continuum approach.
对于板壳问题，共有三种数值模拟方案：线性或非线性的板壳理论、退化连续体方案和直接三维连续体方案。
The theory of controlling the noise radiated by plate and shell according to frequency districts is stated. A damping design method in terms of the value of noise reduction is advanced.
本文阐述了板壳结构噪声的分区控制理论，提出了以降噪量作为设计指标的阻尼设计方法；
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