Parametric studies on relationships between flutter derivatives of slender bridge (I)

Relationships between. utter derivatives of slender bridge are investigated based on our previously proposed semi-analytical flutter derivatives of flexible structure. The intrinsic relations are validated with test data of. utter derivatives of two bridges. Changes in. utter derivatives with the aerodynamic center, rotation speed, and angle variation are also studied by using a parametric method. The results show correctness of the proposed expressions of. utter derivatives given by authors in Ref. [1], and indicate that certain relations exist between these derivatives. It is also shown that semi-analytical. utter derivatives are applicable to bridges with a streamlined cross-section.