Comsol modelling for Energy Harvester (Unimorph)

In summary, Comsol modelling is a software tool that uses finite element analysis to simulate physical phenomena and optimize designs. It is highly accurate for predicting the behavior of Energy Harvesters, but the results depend on the input data and assumptions made. Key parameters to consider when using Comsol for Energy Harvester modelling include material properties, geometric dimensions, boundary conditions, and loading conditions. It can be used for various types of Energy Harvesters and can help optimize the design by simulating different variations and identifying the optimal design for improved performance and efficiency.
  • #1
Kajan thana
151
18
TL;DR Summary
Hello,
I am trying to model an energy harvester, a cantilever beam with some PZT material. After applying the geometry and BCs, I am trying to get a mechanical Power Out Vs Frequency chart to obtain the mechanical power at the natural frequency. I am stuck on the global variable part, not sure what formula to use. I have attached photos of the modelling and a similar chart I am trying to obtain.
1648830943688.png
1648830979464.png
1648831001164.png
 
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  • #2
package com.example.demo.service;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import com.example.demo.model.Employee;import com.example.demo.repository.EmployeeRepository;@Servicepublic class EmployeeService { @Autowired private EmployeeRepository employeeRepository; public List<Employee> getEmployees(){ return (List<Employee>) employeeRepository.findAll(); } public void addEmployee(Employee e) { employeeRepository.save(e); } public void deleteEmployee(int id) { employeeRepository.deleteById(id); } public Employee getEmployeeById(int id) { return employeeRepository.findById(id).get(); } public void updateEmployee(Employee e) { employeeRepository.save(e); }}
 

1. What is Comsol modelling and how is it used for energy harvesting?

Comsol modelling is a software program that allows scientists and engineers to simulate and analyze physical systems using mathematical models. It is commonly used for designing and optimizing energy harvesting devices, such as unimorph energy harvesters. Comsol modelling can help predict the behavior and performance of these devices under different conditions, allowing for more efficient and effective designs.

2. What is a unimorph energy harvester and how does it work?

A unimorph energy harvester is a type of piezoelectric energy harvesting device that converts mechanical energy into electrical energy. It consists of a single piezoelectric layer sandwiched between two electrodes. When the device is subjected to mechanical stress, the piezoelectric material generates an electric charge, which is then collected by the electrodes and converted into usable energy.

3. What are the key parameters that need to be considered when modelling a unimorph energy harvester?

The key parameters for modelling a unimorph energy harvester include the material properties of the piezoelectric layer, the geometry and dimensions of the device, the type and magnitude of the applied mechanical stress, and the electrical load connected to the device. Other factors such as temperature and environmental conditions may also need to be taken into account.

4. Can Comsol modelling be used to optimize the performance of a unimorph energy harvester?

Yes, Comsol modelling can be used to optimize the performance of a unimorph energy harvester by allowing for the exploration of various design parameters and configurations. By simulating different scenarios, scientists and engineers can determine the most efficient and effective design for a specific application.

5. Are there any limitations or challenges when using Comsol modelling for energy harvesting?

While Comsol modelling is a powerful tool for energy harvesting design, there are some limitations and challenges to consider. The accuracy of the simulation results is highly dependent on the accuracy of the input parameters and assumptions made in the model. Additionally, the complexity of the model and the computational time required may also pose challenges. It is important to carefully validate and verify the results of the simulation before applying them to a real-world device.

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