M. Toyabur Rahman

7 Questions 12 Answers 0 Followers

Questions related from M. Toyabur Rahman

How to calculate the energy conversion efficiency of the wind-based Triboelectric nanogenerator?

We are developing a rotating triboelectric and piezoelectric based hybridized nanogenerator for wind energy harvesting. How to calculate the energy conversion efficiency of each form of generator?

17 November 2018 4,512 1 View

How to make piezoelectric nano-composite (KNN=BTO)?

Actually, I tried to make KNN-xBTO nanoparticle by solid state reaction technique by firing the precursors at high temperature (1200°C )over 2 h at heating rate of 5 °C (also 10°C) min-1 inside...

17 July 2018 6,413 6 View

Could anyone please explain how mathematically model this(attached picture) clamped -clamped beam?

*How we can mathematically model this beam ? * calculating the resonant frequency of the beam?? *what will be the DOF of this beam??? If anyone give any reference for doing or understanding the...

13 January 2018 2,328 3 View

Can anyone recommend a high voltage Equipments for poling of piezoelectric materials? What will be the experimental setup for poling ??

I'm looking for instruments which can supply High voltage DC for poling piezoelectric material i.e. piezoceramic, piezoelectric polymer, piezoelectric composite etc. However, I don't have much...

14 December 2017 6,149 5 View

3D piezoelectric energy harvester modeling, but couldn't complete ! Does anyone has any idea in harvester modeling?

I'm new comsol user. I tried to simulate 3D piezoelectric energy harvester, but couldn't complete successfully :( . I faced some difficulties and couldn't solve ! Does Anyone has any idea about...

30 September 2016 474 3 View

Can anyone help me by shearing any 3D model of piezoelectric energy harvester by using Comsol multi-physics@?

I'm beginner at comsol modeling. I tried 3D modeling of PZT vibration energy harvester by comsol , But I couldn't make it. I attached a file which i tried on.

14 July 2016 8,625 3 View

I tried this 2D energy harvester model in 3D model but couldn't make it. can anyone tell me what will be the differences in 2D vs 3D modeling?

tried 3D energy harvester modeling in comsol.

07 July 2016 1,530 3 View