Exact and approximate methods, energy methods principle of virtual work, introduction to computational structural mechanics.

精确解法及近似解法, 能量法,虚功法.结构计算力学绪论.

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Then, the principle of virtual work is used to derivate the equilibrium condition of CM.

在以上基础上, 应用虚功原理,推导出柔性机械稳态的条件.

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In the end, the average pressure of bulging is given by the principle of virtual work.

最后运用虚功原理给出了胀形平均液压的解析解.

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