For a MDOF system, which one is needed to calculate its vibration frequencies? A: the mass matrix [M] B: the damping matrix [C] C: the stiffness matrix [K] D: the vibration modes
For a MDOF system, which one is needed to calculate its vibration frequencies? A: the mass matrix [M] B: the damping matrix [C] C: the stiffness matrix [K] D: the vibration modes
MDOF体系水平地震作用的计算方法有 A: 振型分解法 B: 振型分解反应谱法 C: 时程分析法 D: 底部剪力法
MDOF体系水平地震作用的计算方法有 A: 振型分解法 B: 振型分解反应谱法 C: 时程分析法 D: 底部剪力法
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