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Ampare1987

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[求助] Abaqus说明书生死单元英文版说明书的一句话的翻译已有1人参与

今天在看Abaqus说明书生死单元部分是看到了一段话：
Upon reactivation an element can have a significantly different volume or mass, so the mass matrix is reformed for the element. Any local orientations applicable to the element are redefined on the new configuration. For shell and membrane elements, however, the thickness of the reactivated elements is the thickness as specified at the start of the analysis by the element’s section definition, a nodal thickness definition (“Nodal thicknesses,” Section 2.1.3), or an import definition (“Transferring results between Abaqus analyses: overview,” Section 9.2.1).
我没有读过英文版的线性代数，不太清楚矩阵运算的表达，我想问一下第一句的the mass matrix is reformed for the element. 中的reform的确切意思。
谢谢大家。

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