In a multi-body finite element analysis (FEA) simulation with ABAQUS, various components of different shapes, sizes, and materials interact with one another. Some of these components may be idealized as rigid, meaning they are non-deformable under the action of applied forces and moments. Choosing when a component can be treated as rigid is an important
Tie constraints are a powerful and effective tool for connecting different regions in ABAQUS FEA model, ensuring they perform as a single, bonded structure during the simulation. They work by allowing the surfaces to move together as a single entity irrespective of their mesh and material differences. These types of constraints are often used to
One very necessary part of the FEA process is cleaning up geometry so it can be meshed. Many times, we get CAD files that our pre-processor can’t read in properly or needs to be simplified to make a good mesh. In this blog, we will be going over some tricks to help go from a
One of the most important steps in solving fluid flow problems using CFD is selecting and setting the correct boundary conditions that accurately represent what is happening in real-life. Choosing physically appropriate boundary conditions is one of the most important parts of developing a reliable CFD methodology. Boundary conditions provide information to the solver on
In our previous blog, we described the turbulent energy cascade and the turbulent energy spectrum that characterizes a turbulent flow. To summarize, a turbulent flow consists of eddies (swirling regions of fluid) of different sizes. These eddies range from being a comparable size to the characteristic length of the system and being heavily geometry dependent,
One way to significantly reduce the size of an FEA job is to utilize symmetry. But how do we do it, and when can we apply symmetry? We’ll go over all that in this blog, as well as the cases of antisymmetry, asymmetry, and axisymmetry! When Can I Use Symmetry? When using the term symmetry
The popularity of CFD for industrial applications, as well as academic research to accurately predict fluid flow behavior, is ever increasing as technological advances are made in computing technology and speed (e.g., massively parallel supercomputers with GPU acceleration). Within the heart of these CFD simulations, two main methodologies exist: the Navier-Stokes approach and the Lattice
Before we dive deeper into turbulence modelling in CFD, it is crucial to understand the different scales of turbulence and the energy cascade. Let’s look at a brief overview of the energy cascade and the turbulent energy spectrum. The Scales of Turbulence A turbulent flow consists of eddies, which are swirling regions of fluid motion
Fluids are all around us, including the air we breathe, the water we drink, and the blood flowing in our body. Understanding how fluids interact with our surroundings allows us to harness their potential for endless applications in multiple disciplines. For example, reducing the air resistance/drag on cars and airplanes so we can travel faster
Introduction Shock Response Spectrum (SRS) in ABAQUS is used to calculate the peak response of a physical system subjected to shock loads in the frequency domain. This is a very useful, inexpensive tool that provides qualitative comparisons between preliminary designs. It is often essential in the fields of engineering, material science, and electronics where rapid
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