Design and analysis of piezoelectric stack module by using numerical finite element models

Roosdi, Roohakimi (2022) Design and analysis of piezoelectric stack module by using numerical finite element models. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Piezoelectric is device that can be either actuator or generator. When electricity is supplied, the molecules of the piezo expand or contract, making it ideal for use as an actuator. When external pressures, such as tensional and compressive forces are applied, the random molecule charge is organized and the potential difference arises, causing the charge to transfer. Voltage is created as a result of this circumstance. Stacking the piezoelectric plate is able to manipulate the energy output by considering several parameters. The theory found that piezoelectric material volume will influence the output power. The volume can be controlled by regulating the surface area or the thickness of the piezoelectric materials. The objective of this project is to design and analyse the piezoelectric stack module with various design methods in order to achieve optimum performance. To achieve this objective, 20 pieces of piezo plate have been used to study the stacking method with a cumulative force of 290kg. The challenge is to stack the commercial piezo that has top surface wiring and to make sure the force is fully through each piezo plate. Stack style is one of the major parameters that affects the force distribution toward the peizo plate. Quality Functional Deployment, the QFD method has been used in design the product. This method consists of House of Quality, HoQ that demonstrates how customer criteria are linked to the techniques and strategies of achieving those goals. Benchmarking has also been used as a reverse engineering tool to derive client requirements from other products for comparison. To proceed with the analysis, a combination of products was selected. The analysis consists of the reaction of the stack arrangement method to the resulting voltage and the structure that holds the stack. Different stacks produce different voltages. As a result, the series stack is the most optimal stack design since it produces the highest voltage output, is the simplest to construct, and is designed to be connected to a series circuit to supply maximum total voltage.

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