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What Are Fiber Reinforced Composites? – And Why Do We Use Them?

Composites are made of two or more dissimilar materials which have different physical and chemical properties. These materials are combined to obtain the most desirable properties from the individual elements. The individual components within the finished composite remain separate and distinct, thus differentiating composites from solid alloys and mixtures. There are several types of composite

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Technical Blogs

What Is y+ In CFD? – And Why Does It Matter?

If you are somewhat familiar with CFD simulations, you will most likely have come across the term y+.  This dimensionless term is one of the most critical aspects of designing a mesh for your CFD simulation, particularly for wall bounded turbulent flows.  This can make or break your CFD solver’s ability to accurately predict the

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Technical Blogs

What Is Creep In Materials? – And How Does It Work?

When material is subjected to constant load over a prolonged period of time, its deformation gradually progresses leading to failure of the material. This phenomenon of material failure is called creep. The creep deformation will be permanent even if the stresses are below yielding point of the material. The effect of creep rapidly increases at

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Technical Blogs

Rigid Bodies In FEA – What Are They And How Should We Use Them?

In a multi-body finite element analysis (FEA) simulation, 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. This assumption simplifies the model of complex mechanical and physical systems, thereby increasing the

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Technical Blogs

What Are Tie Constraints In Abaqus – And How Do They Work?

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

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Technical Blogs

Geometry Cleanup In Abaqus CAE – From A Mess To A Mesh

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

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Technical Blogs

Boundary Conditions in CFD – The Common Types

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. Boundary conditions provide information to the solver on the behavior of the fluid at openings and surfaces in the computational domain (or as the name suggests,

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Technical Blogs

Turbulence Modeling Techniques In CFD – DNS vs LES vs RANS

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,

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