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2. MDOF Modal Response - se.unl.edu

Dynamic Loads Modal Response Richard L Wood, 2018 Page 1 of 15 2. MDOF Systems: Modal Response Lesson Objectives: 1) Quantitatively compute the Response (displacement and element forces) of a damped MDOF system using classical Modal analysis under external forces and base excitation. 2) Define spatially distributed and time independent external loads. 3) Define and compute Modal participation and Modal contribution factors. 4) Quantitatively compute the MDOF Response under forced vibration using a truncated Modal analysis . Background Reading: 1) Read _____. Displacement and Element Forces via Modal analysis : 1) For a given MDOF structure with an external dynamic force of _____, the dynamic Response can be determined by one of the following equations: 2) The displacement Response for an SDOF can be adopted to find the solution for the Modal coordinate _____.

MDOF system using classical modal analysis under external forces and base excitation. 2) Define spatially distributed and time independent external loads. 3) Define and compute modal participation and modal contribution factors.

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