Product Overview:

This tutorial delves into the Fluid-Structure Interaction (FSI) simulation of blood and vascular structures using Abaqus, highlighting the co-simulation process. Hemodynamic factors—such as pressure, flow rate, and shear stress—are critical contributors to vascular diseases, including atherosclerosis and aneurysms. Recent advancements in medical imaging techniques, like magnetic resonance imaging (MRI) and computed tomography (CT), have provided detailed anatomical insights into the vascular system. Leveraging computational fluid dynamics (CFD), blood flow simulations enable precise quantification of hemodynamic parameters with high spatial and temporal resolution. While early studies often utilized idealized geometric models, recent research predominantly focuses on image-based, subject-specific models. In this analysis, three-dimensional parts representing blood and the vessel are utilized.

To simulate blood flow, Abaqus CFD is employed, applying flow steps along with inlet and outlet boundary conditions. Boundaries are defined for the vessel component within the standard module. It is crucial to maintain consistent mesh quality between the CFD and standard analyses, as a high-quality mesh significantly influences the accuracy of the results. Post-simulation, we are able to derive stress and displacement values for the vessel from the CFD analysis, as well as pressure and velocity metrics from the effects exerted by the blood flow.