Virtual work principle for solid body expressed in Lagrangian coordinate system is solved by dynamic finite element method.

采用动力有限元求解拉氏坐标下固体的虚功原理。

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A transient heat-transfer mathematic model was established using a Lagrangian coordinate system in twin-roll aluminum trip casting and rolling process.

采用拉格朗日随体坐标建立了铝双辊铸轧过程瞬态传热数学模型。

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