generalized mass

Compared with the former 2-D flutter calculation based on rigid section model, generalized mass and generalized mass moment of inertia are introduced to take the variation of deck cross section along the span into consideration.

与原来基于刚性节段型的二维颤振计算相比，引入了广义质量和广义惯性矩来考虑主梁断面沿跨度的变化；

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depiction of generalized mass by spatial operator algebra

广义质量的空间算子代数描述

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Since the fuel weight of very large FPSO in shallow water accounts for nearly 80 percent of total displacement, it is very important how to correctly simulate the fuel mass distribution for calculating natural frequency, generalized mass and modes.

浅水超大型FPSO满载时原油重量将近占载重量的80%，因此如何正确模拟原油重量分布对干结构的固有频率、广义质量和振型的计算非常重要。

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