Generalized SDOF System can be treated as SDOF Many different,more complex systems can be studied as SDOF systems,either exactly or under some simplifying assumption. Case 1:Assemblage of rigid bodies The analysis provides exact results for an assemblage of rigid bodies supported such that it can deflect in only one shape Case 2:System with distributed mass and stiffness. Only approximate results for systems with distributed m and k Depends on the assumed deflected shape 闺 土本程李悦  Generalized SDOF • System can be treated as SDOF • Many different, more complex systems can be studied as SDOF systems, either exactly or under some simplifying assumption.  Case 1: Assemblage of rigid bodies • The analysis provides exact results for an assemblage of rigid bodies supported such that it can deflect in only one shape  Case 2: System with distributed mass and stiffness. • Only approximate results for systems with distributed m and k • Depends on the assumed deflected shape