Modeling and characterization of permendur cantilever beam for energy harvesting

Mojtaba Ghodsi*, Hamidreza Ziaiefar, Morteza Mohammadzaheri, Amur Al-Yahmedi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


This article presents the development of a cantilever harvester made of permendur with tip excitation. In the beginning, the dynamic behavior of the tip-mass beam harvester subjected to a harmonic bending force at the free-end has been studied. Also, the magneto-mechanical model, rotating unbalance equations and Faraday's Law have been combined to present the general model for generated power. Furthermore, damping coefficients have been elaborately measured and considered in the modeling of magnetostrictive harvester and prediction of optimum load to generate the maximum power. Good agreement between analytical and experimental results shows that the model is able to predict the behavior of harvester under the vibration with tip excitation and can find the optimum external load to have maximum power. Experiment results show that the maximum output power is 6.81 μW/cm3 and this power happens when the harvester is connected to a 0.63 Ω external load. Compared to other magnetostrictive harvesters, Permendur shows lower power density. However, its harvested power is enough to energize μW electrical devices at a reasonable cost. The presented results in this paper can be utilized as a design guideline for future investigations to optimize vibration-based magnetostrictive energy harvesters with tip excitation.

Original languageEnglish
Pages (from-to)561-569
Number of pages9
Publication statusPublished - Jun 1 2019


  • Analytical model
  • Cantilevered beam harvester
  • Energy harvesting
  • Magnetostrictive
  • Permendur
  • Rotating unbalance
  • Tip excitation

ASJC Scopus subject areas

  • Mechanical Engineering
  • Pollution
  • Energy Engineering and Power Technology
  • General Energy
  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering
  • Management, Monitoring, Policy and Law
  • Building and Construction
  • Fuel Technology
  • Renewable Energy, Sustainability and the Environment
  • Civil and Structural Engineering
  • Modelling and Simulation


Dive into the research topics of 'Modeling and characterization of permendur cantilever beam for energy harvesting'. Together they form a unique fingerprint.

Cite this