scholarly journals Design methodology of piezoelectric energy-harvesting skin using topology optimization

2013 ◽  
Vol 49 (2) ◽  
pp. 281-297 ◽  
Author(s):  
A. Takezawa ◽  
M. Kitamura ◽  
S.L. Vatanabe ◽  
E. C. N. Silva
Keyword(s):  
Topology Optimization ◽  
Energy Harvesting ◽  
Design Methodology ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy

Topology Optimization of Piezoelectric Energy Harvesting Devices Subjected to Stochastic Excitation

2010 ◽  
Author(s):  
Zheqi Lin ◽  
Hae Chang Gea ◽  
Shutian Liu
Keyword(s):  
Topology Optimization ◽  
Energy Harvesting ◽  
Electrical Energy ◽  
Ambient Vibration ◽  
Piezoelectric Energy Harvesting ◽  
The Past ◽  
Piezoelectric Energy ◽  
Random Responses ◽  
Pseudo Excitation ◽  
Energy Harvesting Devices

Converting ambient vibration energy into electrical energy using piezoelectric energy harvester has attracted much interest in the past decades. In this paper, topology optimization is applied to design the optimal layout of the piezoelectric energy harvesting devices. The objective function is defined as to maximize the energy harvesting performance over a range of ambient vibration frequencies. Pseudo excitation method (PEM) is applied to analyze structural stationary random responses. Sensitivity analysis is derived by the adjoint method. Numerical examples are presented to demonstrate the validity of the proposed approach.

Topology Optimization of Piezoelectric Energy Harvesting Skin Using Hybrid Cellular Automata

2013 ◽  
Vol 135 (3) ◽  
Author(s):  
Soobum Lee ◽  
Andrés Tovar
Keyword(s):  
Topology Optimization ◽  
Energy Harvesting ◽  
Cellular Automata ◽  
Optimization Method ◽  
Piezoelectric Energy Harvesting ◽  
High Fidelity ◽  
Element Analysis ◽  
Hybrid Cellular Automata ◽  
Piezoelectric Energy ◽  
Interpolation Functions

An earlier study introduced the concept of piezoelectric energy-harvesting skin (EHS) to harvest energy by attaching thin piezoelectric patches onto a vibrating skin. This paper presents a methodology for the optimum design of EHS with the use of an efficient topology optimization method referred to as the hybrid cellular automaton (HCA) algorithm. The design domain of the piezoelectric material is discretized into cellular automata (CA), and the response of each CA is measured using high-fidelity finite-element analysis of a vibrating structure. The CA properties are parameterized using nonlinear interpolation functions that follow the principles of the SIMP model. The HCA algorithm finds the optimal densities and polarizing directions at each CA that maximize the output power from the EHS. The performance of this approach is demonstrated for the optimal design of EHS in two real-world case studies.

Topology Optimization of Piezoelectric Energy Harvesting Strap Buckle

2009 ◽  
Author(s):  
Bin Zheng ◽  
Hong-Zhong Huang ◽  
Hae Chang Gea
Keyword(s):  
Topology Optimization ◽  
Energy Harvesting ◽  
Electric Energy ◽  
Optimization Method ◽  
Piezoelectric Energy Harvesting ◽  
Wearable Electronics ◽  
Design Constraint ◽  
Piezoelectric Energy ◽  
Material Volume ◽  
Topology Optimization Method

In the past decades, the stagnant growth of battery technology becomes the bottle-neck of new generation of portable and wearable electronics which ask for longer work time and higher power consumption. Energy harvesting device based on the direct piezoelectric effect that converts ambient mechanical energy to usable electric energy is a very attractive energy source for portable and wearable electronics. This paper discusses the design of piezoelectric energy harvesting strap buckle that can generate as much as possible electric energy from the differential forces applying on the buckle. Topology optimization method is employed to improve the efficiency of piezoelectric energy harvesting strap buckle in a limited design space. A stiffness or displacement constraint is introduced to substitute material volume constraint in this problem formulation to avoid useless optimum result with nearly zero material volume. The sensitivities of both objective function and design constraint are derived from the adjoint method. A design example of piezoelectric energy harvesting strap buckle using the proposed topology optimization method is presented and the result is discussed.

Sign in / Sign up

Export Citation Format

Share Document