FINITE ELEMENT ANALYSIS

Do you have a problem involving part failure? Is your current design

robust enough to survive its application? Are you trying to optimize a

part’s shape to reduce costs? Finite Element Analysis (FEA) helps solve

these problems. With FEA you can:

Optimize new designs

Calculate stress to predict part failures

Conduct a modal analysis to make sure your part won’t fail due to

frequency resonance problems

Predict elastic instability

Sample Analysis: We verified the design of the new field joint of the

external solid rocket booster for the Space Shuttle after the Challenger

disaster. A structural analysis of Mortin Thiokol’s new field joint design

resulted in a three dimensional model of the ring assembly around the

whole rocket that showed the joint met the designed requirements.

COMPUTATIONAL FLUID DYNAMICS

Computational Fluid Dynamics (CFD) provides a way to

predict how liquids and gases flow in a given situation.

Applications include:

Flow over and under a car body

Flow around an airplane wing

Flow through internal combustion and jet engines

With more advanced CFD programs, you can do combustion analysis and

chemical reactions including electrochemistry.

The illustration is an example of the optimization of flow between the

outer ring and the interior of a helical heat exchanger. The purpose of the

analysis is to maximize the heat transfer from the gas space to the cold water space by determining the best

split of flow between the two volumes.

Original Revised

An Engineering Consulting Company

Computer Aided Engineering Analysis Finite Element Analysis

Computational Fluid Dynamics Mesh Generation Software Development

Wayne R. Oaks PE Principal and Founder of Acorn Engineering, Wayne has a BS and MS in Mechanical Engineering from The Ohio State University and over 30 years ’ experience in engineering analysis in the simulation industry including CFD, FEM and mesh generation.

Software Proficiencies: ANSYS Mechanical, Fluent, CD-adapco, STAR-CCM+, SolidWorks, Maple

“My passion is creating algorithms, programs, systems or machines. Along with this passion comes an intense curiosity and ability to problem solve to make things work. I have spent most of my career as a Mechanical Engineer and Analyst designing, writing and using software for engineering application including FEA, CFD and mesh generation. This along with high level mathematics skills and a deep understanding of Finite Element Method Theory enable me to solve real world practical problems using analytic tools such as the Finite Element Method and Computation Fluid Dynamics.”

Contact us to discuss your engineering analysis, simulation or software needs at: solutions@acornengineering.me; 1.631.513.0198

MESH GENERATION

CUSTOM ENGINEERING SOFTWARE DEVELOPMENT

Acorn Engineering provides customized programming functionality for your specific needs.

Sample Program: Specialized Finite Element program for

use in a Shear Skin Force Platform.

The Force Platform measures the displacements of the shear

skin as a person walks over it. The FEA program converts

those displacements into a pressure distribution under the

foot. This measuring device is being designed for use on

diabetic patients to predict foot ulcer formation before they

can cause serious foot problems.

Mesh generation is the tool needed for both FEA and CFD analyses to

make the geometric models that CFD and FEA need to calculate

results. Mesh Generation programs divide the volume in question into

lots of smaller volumes called elements (FEA) or cells (CFD).

Acorn Engineering provides mesh generation services or designs

specific mesh generation procedures.

Sample Project: Using trimmed mesher, part of CD-adapco’s Computational

Fluid Dynamics suite Star-CD, hexahedral cells are trimmed at surface

intersections allowing real-world problems to be meshed quickly and easily.