集中质量模型是群桩基础抗震计算中广泛采用的简化计算模型。
In this paper, lumped mass models with various complexities are compared.
在集中质量模型的基础上，运用传递矩阵法对辗环机的主轴进行数学建模。
Based on the model of concentrated parameters, mathematical model for the spindle of a bearing rolling machine is set up with transfer-matrix method.
轴系扭振频率和响应计算采用连续质量模型，次同步谐振特性分析采用集中质量模型。
The continuous model is adopted in the torsional vibration frequency and resonance of shaft system, the lumped parameter equivalent applied in the sub-synchronous resonance.
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