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基于FEM的水轮发电机上机架的结构改进

Water Power(2013)

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Abstract
针对某电站水轮发电机上机架出现的裂纹情况,采用有限单元法,运用I-Deas分析软件,建立了上机架的有限元模型,通过分析得知原结构的最大等效应力值出现部位与裂纹产生位置完全吻合;结合上机架在现场的实际布局,对其结构进行多个方案的优化对比分析,最终决定对高应力区进行局部优化,结果表明,上机架的最大应力值在强度安全范围之内,改进方案可行。
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Key words
upper bracket,finite element method,strength,improvement,hydrogenerator
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