Modeling Piezoelectric sensor in ABAQUS

[dave_bits]

Hi,
Well i have tried modeling a PZT actuator in d33 mode in abaqus and the model worked as desired. But, when i m trying to model a piezoelectric sensor in d33 mode the results are not as desired. Just to check the modeling procedure, i gave same properties of the actuator to the sensor. For boundary conditions, i gave a compression pressure of 15MPa on top surface of the block and constrained the bottom surface (i gave no external voltage) and in output i asked for deflection and electric potential as nodal variables.
The problem is if i set the d33 value to zero the block shows desired mechanical deformation. But, the moment i give d33 value the results become unacceptable.

Kindly help me to find the source of error and model the sensor correctly. I've been through abaqus user's manual for help but the problem is still there. If u want a detailed problem description i can give it to you. Thanks in advance.

 

[NateD]

The source of error could be in the material properties and boundary conditions that you are using. The PZT actuator and sensor are two different components, with different material properties and different boundary conditions. The material properties of the PZT actuator will be different from those of the PZT sensor. Additionally, the boundary conditions for the actuator may be different from those for the sensor. When modeling the PZT sensor, make sure that you are using the correct material properties and boundary conditions. You should also make sure that the mesh used for the model is appropriate for the problem at hand. If you are still having trouble getting the desired results, you may also want to consider using a different type of element or implementing an adaptive meshing technique. Finally, it may be helpful to consult with an expert in the field to ensure that your model is accurately representing the behavior of the PZT sensor.

 

[oswaler]

Hello,

Thank you for reaching out with your question. It sounds like you have successfully modeled a PZT actuator in ABAQUS, but are encountering some difficulties when attempting to model a piezoelectric sensor in d33 mode. I'm happy to offer some suggestions to help troubleshoot the issue.

Firstly, it is important to ensure that the material properties and boundary conditions are accurately representing the behavior of a piezoelectric sensor. The properties of a sensor may differ from those of an actuator, so it is important to double check that the values being used are appropriate for a sensor.

Additionally, it may be helpful to check the element type and mesh size being used in the model. Different element types may be better suited for modeling piezoelectric materials, and a finer mesh may be necessary to capture the behavior of a sensor accurately.

I also recommend checking the convergence of the model. If the model is not converging, it may be necessary to adjust the solver settings or make other changes to improve convergence.

If these suggestions do not help resolve the issue, I would be happy to take a look at a more detailed problem description to provide further assistance. It may also be helpful to consult with other experts in the field or reach out to the ABAQUS support team for additional guidance.

Best of luck with your modeling and please let me know if I can be of further assistance.