Piezo simulation

Algor has added voltage-dependent piezoelectrics to the list of material models available with Algor’s linear static stress analysis package.

Algor has added voltage-dependent piezoelectrics to the list of material models available with Algor’s linear static stress analysis package.

The new material model takes advantage of Algor’s multiphysics capabilities by providing engineers with the ability to analyse a piezoelectric material without previously knowing the voltage.

‘Algor is answering engineers’ calls for more material models in order to cover a wider range of mechanical analysis types,’ said Michael Bussler, president of Pittsburgh-based Algor. ‘The piezoelectric material model is linked closely to our electrostatic analysis package, thereby creating another multiphysics application.’

Piezoelectric materials deform when subjected to voltage, or, conversely, produce a voltage through deformation. Some examples of piezoelectric materials are the buzzers inside pagers and cell phones and the quartz inside a watch, which keeps time with its vibrations.

Algor now provides engineers with two piezoelectric material models: a general model for engineers and designers performing analysis with routine constants that are readily available and a more detailed model for those interested in complex material behavior. Algor software helps the engineer to identify the more specific constants needed to elicit more detailed results.

If the engineer needs to determine the voltage for the linear static stress analysis, the integration with Algor’s electrostatic analysis software can solve the problem. An engineer can transfer a CAD solid model or define the geometry in Superdraw III, perform an electrostatic analysis on the part to determine voltage distribution and automatically apply the results to a linear stress model.

Choosing the piezoelectric material model to represent the material behavior of the part, an engineer can then perform a linear static stress analysis to determine displacements and resultant stresses from the applied voltage.

The piezoelectric material model is newly included with Algor’s entire software product line that works with Windows NT/95/98/2000. Algor customers with current technical support and maintenance agreements can request a complete software update, including the piezoelectric material model through Algor’s Web site (www.algor.com) or an Algor account representative.