Structural design and dynamic analysis of robotic fish with piezoelectric fiber composite

2012 ◽  
Author(s):  
Wenjing Zhao ◽  
Aiguo Ming ◽  
Makoto Shimojo ◽  
Jun Shintake
Keyword(s):  
Dynamic Analysis ◽  
Structural Design ◽  
Fiber Composite ◽  
Robotic Fish ◽  
Piezoelectric Fiber Composite ◽  
Piezoelectric Fiber

Fluid-Structure Interaction Analysis of a Soft Robotic Fish Using Piezoelectric Fiber Composite

2014 ◽  
Vol 26 (5) ◽  
pp. 638-648 ◽  
Author(s):  
Wenjing Zhao ◽  
◽  
Aiguo Ming ◽  
Makoto Shimojo ◽  
Yohei Inoue ◽  
...  
Keyword(s):  
Fiber Composite ◽  
Fluid Structure Interaction ◽  
Robotic Fish ◽  
Hydrodynamic Performance ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Analysis Scheme ◽  
Piezoelectric Fiber Composite ◽  
Surrounding Fluid ◽  
Piezoelectric Fiber

<div class=""abs_img""><img src=""[disp_template_path]/JRM/abst-image/00260005/13.jpg"" width=""300"" />Model of soft robotic fish</div> Designing a high-performance soft robotic fish requires considering the interaction between the flexible robot structure and surrounding fluid. This paper introduces fluid-structure interaction (FSI) analysis used to enhance the hydrodynamic performance of soft robotic fish using piezoelectric fiber composite (PFC) as the propulsion actuator. The basic FSI analysis scheme for soft robotic fish is presented, then the numerical model of the actuator, robot structure, and surrounding fluid are described based on the FSI analysis scheme. The FSI analysis of the soft robotic fish is performed through these numerical models. To evaluate the effectiveness of FSI analysis, coupling simulation and experimental results are compared. We found that the calculated results of propulsive force and deformation displacement were similar to those for experiments. These results suggest that FSI analysis is useful and is applicable to evaluating propulsion characteristics of the soft robotic fish to improve performance. </span>

Modeling of Strain Energy Harvesting in Pneumatic Tires Using Piezoelectric Transducer

2014 ◽  
Vol 42 (1) ◽  
pp. 16-34 ◽  
Author(s):  
Ali E. Kubba ◽  
Mohammad Behroozi ◽  
Oluremi A. Olatunbosun ◽  
Carl Anthony ◽  
Kyle Jiang
Keyword(s):  
Energy Harvesting ◽  
Strain Energy ◽  
Fiber Composite ◽  
Experimental Tests ◽  
Evaluation Study ◽  
Monitoring Systems ◽  
Monitoring Device ◽  
Optimum Location ◽  
Piezoelectric Fiber Composite ◽  
Piezoelectric Fiber

ABSTRACT This paper presents an evaluation study of the feasibility of harvesting energy from rolling tire deformation and using it to supply a tire monitoring device installed within the tire cavity. The developed technique is simulated by using a flexible piezoelectric fiber composite transducer (PFC) adhered onto the tire inner liner acting as the energy harvesting element for tire monitoring systems. The PFC element generates electric charge when strain is applied to it. Tire cyclic deformation, particularly at the contact patch surface due to rolling conditions, can be exploited to harvest energy. Finite element simulations, using Abaqus package, were employed to estimate the available strain energy within the tire structure in order to select the optimum location for the PFC element. Experimental tests were carried out by using an evaluation kit for the energy harvesting element installed within the tire cavity to examine the PFC performance under controlled speed and loading conditions.

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