Structural Performance Evaluation for Vibration-based Energy Harvester utilized in Railway Vehicle

Ki-Weon Kang,Ji-Won Jin,J Detand,D Ruxu

doi:10.1051/matecconf/201816702003

Abstract

This study aims to assess the structural performance and structural integrity of vibration energy harvester (VEH). For this, the structural performance test were conducted to identify the natural frequency and structural response against frequency. And then, static structural analysis was performed using finite element analysis to investigate the failure critical locations (FCLs). Finally, we conducted the frequency response analysis in frequency domain to obtain the structural response with frequency and investigate the structural integrity of VEH. Using the above results, we assessed the structural performance and structural integrity of two types of VEHs.

Highlights

The vibration-based energy harvester (VEH) [1,2,3] uses vibrations generated from various structures or components, and in particular, maximizes the power generation using the resonance between the excitation frequency of the vibration load, which comes from structures or components, and the natural frequency of the VEH itself, thereby enhancing the efficiency of power production [4]
We investigated the structural performance and integrity for two types of VEHs (Type I and Type II)
STS 410, and the thickness was 0.65 mm. This VEH was designed to have a natural frequency of fn,1 Hz with the displacement limit of 4mm

Summary

Introduction

The vibration-based energy harvester (VEH) [1,2,3] uses vibrations generated from various structures or components, and in particular, maximizes the power generation using the resonance between the excitation frequency of the vibration load, which comes from structures or components, and the natural frequency of the VEH itself, thereby enhancing the efficiency of power production [4]. The VEH is very likely to be damaged structurally. It is, essential to assess the evaluation of the structural performance and integrity. We assessed the structural performance and integrity of the VEH as shown, which is utilized in high speed railway vehicle [5]. We conducted a static structural analysis to identify the natural frequency and failure critical location (FCL). We conducted a frequency response analysis to identify the stress at the FCL against the frequency

Results and Discussion

Static performance test

Static analysis

Frequency response analysis