Application of ADINA to Modeling of Fluid-Structure Interaction in Buried Liquid-Conveying Pipeline

Finite element modeling of buried liquid-conveying pipeline for the calculation of fluid structure interaction is the key to analyze the damage of long distance buried liquid-conveying pipeline. Because the influence of site, fault movement, and earthquake, etc. it is necessary to calculate fluid-structure interaction (FSI) in finite element analysis under pipe-soil interaction. Finite element model of buried liquid-conveying pipeline for the calculation of fluid structure interaction is constructed through combination of ADINA-parasolid and ADINA-native modeling methods, and the direct computing method of two-way fluid-structure coupling is introduced. Pipe-soil friction is defined in solid model, special flow assumption and fluid structure interface condition are defined in fluid model. Damage of buried liquid-conveying pipeline is investigated through computing of fluid-structure coupling. Results are analyzed, and some advice is proposed.