scholarly journals Hydrogel Ionic Diodes toward Harvesting Ultralow‐Frequency Mechanical Energy (Adv. Mater. 36/2021)

2021 ◽  
Vol 33 (36) ◽  
pp. 2170278
Author(s):  
Yong Zhang ◽  
Chang Kyu Jeong ◽  
Jianjun Wang ◽  
Xin Chen ◽  
Kyoung Hwan Choi ◽  
...  
Keyword(s):  
Mechanical Energy ◽  
Ultralow Frequency

Hydrogel Ionic Diodes toward Harvesting Ultralow‐Frequency Mechanical Energy

2021 ◽  
pp. 2103056
Author(s):  
Yong Zhang ◽  
Chang Kyu Jeong ◽  
Jianjun Wang ◽  
Xin Chen ◽  
Kyoung Hwan Choi ◽  
...  
Keyword(s):  
Mechanical Energy ◽  
Ultralow Frequency

A pendulum-plucked rotor for efficient exploitation of ultralow-frequency mechanical energy

2021 ◽  
Author(s):  
Kangqi Fan ◽  
Chenyu Wang ◽  
Chenggen Chen ◽  
Yan Zhang ◽  
Peihong Wang ◽  
...  
Keyword(s):  
Mechanical Energy ◽  
Ultralow Frequency

An eccentric mass-based rotational energy harvester for capturing ultralow-frequency mechanical energy

2021 ◽  
Vol 241 ◽  
pp. 114301
Author(s):  
Kangqi Fan ◽  
Jiayu Hao ◽  
Chenyu Wang ◽  
Chao Zhang ◽  
Weidong Wang ◽  
...  
Keyword(s):  
Energy Harvester ◽  
Mechanical Energy ◽  
Rotational Energy ◽  
Ultralow Frequency

Harvesting ultralow frequency (< 1 Hz) mechanical energy using triboelectric nanogenerator

Nano Energy ◽  
2019 ◽  
Vol 65 ◽  
pp. 104011 ◽  
Author(s):  
Chaoran Liu ◽  
Nan Zhang ◽  
Jiaqian Li ◽  
Linxi Dong ◽  
Tao Wang ◽  
...  
Keyword(s):  
Mechanical Energy ◽  
Triboelectric Nanogenerator ◽  
Ultralow Frequency

Reduction of structural vibrations with the piezoelectric stacks ring

2020 ◽  
Vol 64 (1-4) ◽  
pp. 729-736
Author(s):  
Jincheng He ◽  
Xing Tan ◽  
Wang Tao ◽  
Xinhai Wu ◽  
Huan He ◽  
...  
Keyword(s):  
Vibration Control ◽  
Mechanical Energy ◽  
Electrical Energy ◽  
Structural Vibrations ◽  
Rotor Systems ◽  
Fea Model ◽  
Piezoelectric Stacks ◽  
Shunt Damping ◽  
Reduction Effect ◽  
Euler Bernoulli Beam

It is known that piezoelectric material shunted with external circuits can convert mechanical energy to electrical energy, which is so called piezoelectric shunt damping technology. In this paper, a piezoelectric stacks ring (PSR) is designed for vibration control of beams and rotor systems. A relative simple electromechanical model of an Euler Bernoulli beam supported by two piezoelectric stacks shunted with resonant RL circuits is established. The equation of motion of such simplified system has been derived using Hamilton’s principle. A more realistic FEA model is developed. The numerical analysis is carried out using COMSOL® and the simulation results show a significant reduction of vibration amplitude at the specific natural frequencies. Using finite element method, the influence of circuit parameters on lateral vibration control is discussed. A preliminary experiment of a prototype PSR verifies the PSR’s vibration reduction effect.

CLINICAL AND NEUROLOGICAL FEATURES OF TRAUMATIC BRAIN DISEASE DURING THE STAGES OF REHABILITATION

2020 ◽  
Vol 3 (1) ◽  
pp. 51-53
Author(s):  
Rano Azizova ◽  
◽  
Umida Shamsiyeva ◽  
Mirzohid Turabbayev ◽  
Begzod Jorayev ◽  
...  
Keyword(s):  
Mechanical Energy ◽  
Pathological Process ◽  
Brain Disease ◽  
Clinical Forms ◽  
Neurological Features ◽  
Mechanisms Of Development ◽  
The Brain

Traumatic brain disease (TBHD) is a pathological process triggered by the damaging effect of mechanical energy on the brain and is characterized — with a variety of clinical forms — by the unity of etiology, pathogenetic and sanogenetic mechanisms of development and outcomes.

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