Finite Element Method Mesh Study for Efficient Modeling of Piezoelectric Material
Technical rept. Nov 2010-Nov 2011
ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ ARMAMENTS TECHNOLOGY DIV
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The purpose of this study is to evaluate modeling of piezoceramic materials with maximum efficiency that is high fidelity with shortest computer run time. To do this, the modeler varied the number of element layers and element types in each part to find the most efficient combination that would produce accurate bending in an activated piezoelectric material with less than 1 displacement error. A cantilever beam model, based on an example in the ABAQUS manual, was developed. The number of element layers varied from one to 10 per part. Low order, high order, and shell and brick elements with various hourglass controls were employed. Results show that the best combination of high accuracy and short run time was a model with a single layer of high order bricks for the piezoelectric layers and a single layer of low order bricks with enhanced hourglass control for the beam layer.
- Numerical Mathematics
- Electricity and Magnetism