Finite Element models continue to grow in size and analyzing a large number of components in an assembly is becoming easy. Multiple CPU machines are common-place and, with the ability to mesh and solve in parallel, the actual work that the computer performs is continually scaling up. Yet, one of the main bottlenecks in the simulation process…
Understanding how structural parts interact and transfer load through mechanically fastened joints has long been a critical aspect of design. Even with the development of integrally machined parts, additive manufacturing, friction stir welding, and adhesive joining to name a few, many assemblies large or small still require some form of good old fashioned nuts and bolts….
An FEA consulting customer recently asked if CAE Associates could perform a structural analysis of the response of human bone that has undergone a transplant procedure. Before giving a definitive answer, we quickly went through the usual finite element analysis checklist: ● CAD model exists? Check. ● Loading defined? Check. ● Aren’t we finite element analysis experts who can handle anything? Check. Things…
Submodeling is an important technique in finite element analyses that allows us to get a more accurate answer in a local region of a larger model. Often computational and time limitations prevent us from using as fine a mesh as is required to adequately assess the results in all local regions of a large complex model. A submodel is an independent,…
As engineers, we’re constantly faced with technical problems that require us to push the limits of what was previously thought to be possible. The continued development of simulation tools like FEA and CFD has played a key role in aiding us to advance new technologies and bridge the gap between scientific knowledge and practical solutions. A natural…
A common question our FEA and CFD analysis customers ask us is “What hardware should I buy?” Purchasing a new high-performance computing (HPC) capable machine can be an intimidating process and lead to paralysis by three letter acronym. CPU, GPU, SAS, SSD, AVX – who came up with these names? The good news is that choosing the right HPC hardware for FEA…
Studying the interaction between fluids and structures is becoming increasingly important in today’s design world. The reasons for this are simple. How can you fully understand what’s happening in a fluid when its boundaries are subject to change? How reliable is your structural design when you don’t really know what that fluid providing the load…
Below I will give you the FEA workflow with short descriptions what to do in each step. FEA Workflow 1: Geometry This is the part that is the most obvious. Whatever you will do, it is best to implement geometry “somehow” into the system. Imagine we want to design a cantilever that looks like this:…
If you have ever tried to model the structural behavior of an elastomer using finite element analysis as part of your FEA consulting projects, you may have experienced the painful process of trying to obtain a converged solution. Elastomers are materials such as natural and synthetic rubbers that can undergo large elastic deformations of 100-700%, typically have highly…
Whatever we design life will verify it at the end… but I would rather know if my design has a fighting chance before any major collapse occurs! This is why FEA results verification is a very important thing.Here are the 5 steps of FEA results verification 1. Check the shape of deformations I think that shape…