Analysis on Dynamic Response and its Optimized Design of Penstock and Expansion Joint Structure in Hydropower Station
During electricity generation in the power station, the dynamic pulsating loads bring about vibration on penstock and expansion joint structure and lead to fatigue damage. This essay is mainly about doing research on flow-induced vibration response of power station expansion joint structure, putting the flow pulsating pressure load of expansion joint tested into numerical model to calculate, and making evaluations about its engineering safety. With regard to the problems existing in this engineering project, we bring forward the corresponding design proposal of optimization. The results of calculation indicate that the optimization program has a significant effect on controlling the decreasing amplitude of the max displacement and stress, which makes sure of the safety of generating system.
Guangfan Li, Yong Huang and Chaohe Chen
H. Gu and G. H. Yan, "Analysis on Dynamic Response and its Optimized Design of Penstock and Expansion Joint Structure in Hydropower Station", Advanced Materials Research, Vols. 250-253, pp. 2892-2896, 2011