Fluid-Structure Interaction Analysis without the Fluid in FEA models
- presented at AP South RUM May 12, 2022
Fluid-Structure Interaction (FSI) routinely occurs during the operation of subterranean equipment in the oil and gas industry. Analysis of these downhole tools needs to account for this interaction. The interaction between a fluid and a structure can be strong or weak. For many weak interactions, the fluid effects can be represented by equivalent loads, such as a hydrostatic pressure, and a regular finite element analysis (FEA) is sufficient. For other cases of weak interactions, the effects of the fluids on the structure can be determined a priori and then used as an input for structure analysis, or vice versa. For strongly coupled FSI, a fully coupled FSI analysis is required, which is substantially much more complicated than the simplifications available with a weakly coupled FSI. Understanding the opportunities for using a weakly coupled FSI can result in great time savings. There are some scenarios where the fluid and its effects can be modeled fully within FEA models in Abaqus. In this presentation, our work (Ref 1-3 as examples) on FSI analysis without fluids in the FEA models is reviewed. It is shown to be efficient and accurate for selected types of applications.
References
- Zhong, A. Gano, J (2008), Dynamic Response in a pipe string during drop-catch, ABAQUS Users’ Conference 2008, May 22-25, 2008, Newport, RI
- Zhong, A. (2016), Evaluation of Effects of Trapped Fluid on Downhole Tool Deformation, Science in the Age of Experience, May 22-26, 2016, Boston, MA, USA.
- Zhong, A., Kohn G., Moreno C. (2018), A High-Fidelity Model for Hydraulic Set of Expandable Liner Hangers, Simulia Global User Conference, June 2018.
RUM2022 Abaqus SIMULIA-Champion
