Correlation between vibration energy propagation characteristics and coupling method of electric guitar

2016 ◽  
Vol 2016 (0) ◽  
pp. 341
Author(s):  
Yuta SUZUKI ◽  
Naoki ITOH ◽  
Toru YAMAZAKI ◽  
Hiroki NAKAMURA ◽  
Toshimitsu TANAKA ◽  
...  
Keyword(s):  
Coupling Method ◽  
Vibration Energy ◽  
Propagation Characteristics ◽  
Energy Propagation ◽  
Electric Guitar

scholarly journals Study on Intelligent Compaction-Equipment Logistics Scheduling and Propagation Characteristics of Vibration Wave in Nonlinear Systems with Multistability Based on Field Test

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Yixuan Han ◽  
Changwei Yang ◽  
Degou Cai ◽  
Hongye Yan ◽  
Hailing Zeng
Keyword(s):  
Nonlinear Systems ◽  
Vibration Energy ◽  
Filling Material ◽  
Construction Technology ◽  
Propagation Characteristics ◽  
Peak Acceleration ◽  
Energy Propagation ◽  
Intelligent Compaction ◽  
Vibration Wave ◽  
Construction Efficiency

The equipment scheduling and propagation characteristics of vibration wave from vibratory roller ⟶ filling material nonlinear systems with multistability are the core problems of subgrade intelligent construction technology, and the logistics scheduling of the equipment is directly related to the construction efficiency. Aiming at the shortages, one typical subgrade located at the Gu’an station of Beijing-Xiong’an city railway is selected to research and finish the field tests; some findings are shown as follows: first, some valuable suggestions about the logistics scheduling of intelligent equipment are proposed, which can break the barriers between the organizations and improve construction efficiency; second, when the vibration wave propagates from the vibratory roller ⟶ surface of filling material ⟶ different buried depths of filling material, the peak acceleration of vibration wave gradually decreases and is hyperbolic distribution approximately. At the same time, the sensitive of attenuation is shown as follows: Z<X ≈ Y, and the critical depth of vibration energy propagation is about 1.0 m. At the same time, the peak acceleration of vibration wave at the interface of different filling material layers exists in steps and is “side clock” distribution approximately with the increase in buried depth. Third, in the propagation process, with the increase in buried depth, the amplitude of fundamental, primary, secondary, until fifth harmonics decreases exponentially (R2>0.9), and the concrete functional relationship among different amplitudes of harmonics can be summarized as y = Ae−BX; fourth, the vibration energy is mainly concentrated near 10–30 Hz in the vibratory roller, but when the vibration wave propagates from vibratory roller⟶filling material, the vibration energy gradually decreases with the increase in depth, and the marginal spectrum gradually changes from one peak to two peaks, that is, 30–50 Hz and 50–100 Hz; fifth, the vibration energy in the vibrational wheel is distributed averagely in the compaction process, and the effective compaction time is two seconds, which will be helpful for revealing the propagation characteristics of vibration wave, optimizing the compaction quality control models and providing some support for the development of intelligent compaction theory of railway subgrade.

Vibration energy propagation analysis of shamisen by experiment statistical energy analysis

2017 ◽  
Vol 2017 (0) ◽  
pp. 403
Author(s):  
Yuta SUZUKI ◽  
Masaya MATSUNAGA ◽  
Hiroki NAKAMURA ◽  
Yoshiaki ITOH ◽  
Toshimitsu TANAKA ◽  
...  
Keyword(s):  
Energy Analysis ◽  
Vibration Energy ◽  
Statistical Energy Analysis ◽  
Energy Propagation ◽  
Propagation Analysis

The Active Control of Vibration and Power Flow in the Crossing-Shaped Plate Structure

2013 ◽  
Author(s):  
Zhao Bo Chen ◽  
Jia Xing Li ◽  
Ying Hou Jiao
Keyword(s):  
Active Control ◽  
Power Flow ◽  
Piezoelectric Actuators ◽  
Lms Algorithm ◽  
Vibration Energy ◽  
Least Mean Square ◽  
Frequency Range ◽  
Energy Propagation ◽  
Control Moment ◽  
Flow Propagation

The power flow active control and vibration energy propagation of crossing-shaped plate with simply support boundary conditions using piezoelectric patch as actuators are studied. The combination of modal method and traveling wave method is employed to obtain the accurate analytical solution. The feedforward filtered-X least mean square (LMS) algorithm is used to obtain the optimal control moment for minimizing the power flow propagation in the plate structures. The results have shown that the vibration energy and power flow can be well controlled by the piezoelectric actuators. The different locations of piezoelectric actuators can introduce obvious fluctuation on the control results in the lower frequency range, and the fluctuation becomes more obvious in the higher frequency range.

Simply supported FPEDs connected by springs for broadband energy harvesting

2020 ◽  
Vol 64 (1-4) ◽  
pp. 201-210
Author(s):  
Yoshikazu Tanaka ◽  
Satoru Odake ◽  
Jun Miyake ◽  
Hidemi Mutsuda ◽  
Atanas A. Popov ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Evaluation Method ◽  
Energy Harvester ◽  
Vibrational Energy ◽  
Functional Materials ◽  
Vibration Energy ◽  
Theoretical Evaluation ◽  
Vibration Energy Harvester ◽  
Polyvinylidene Difluoride ◽  
Simply Supported

Energy harvesting methods that use functional materials have attracted interest because they can take advantage of an abundant but underutilized energy source. Most vibration energy harvester designs operate most effectively around their resonant frequency. However, in practice, the frequency band for ambient vibrational energy is typically broad. The development of technologies for broadband energy harvesting is therefore desirable. The authors previously proposed an energy harvester, called a flexible piezoelectric device (FPED), that consists of a piezoelectric film (polyvinylidene difluoride) and a soft material, such as silicon rubber or polyethylene terephthalate. The authors also proposed a system based on FPEDs for broadband energy harvesting. The system consisted of cantilevered FPEDs, with each FPED connected via a spring. Simply supported FPEDs also have potential for broadband energy harvesting, and here, a theoretical evaluation method is proposed for such a system. Experiments are conducted to validate the derived model.

Wave Propagation Characteristics on a Pipe-Type Cable in Particular Reference to the Proximity Effect

2013 ◽  
Vol 133 (12) ◽  
pp. 954-960 ◽  
Author(s):  
Akihiro Ametani ◽  
Kazuki Kawamura ◽  
Asha Shendge ◽  
Naoto Nagaoka ◽  
Yoshihiro Baba
Keyword(s):  
Wave Propagation ◽  
Proximity Effect ◽  
Propagation Characteristics

Hybrid Vibration Energy Harvester based on Stochastic Resonance

2018 ◽  
Vol 138 (5) ◽  
pp. 185-190
Author(s):  
Meng Su ◽  
Dai Kobayashi ◽  
Nobuyuki Takama ◽  
Beomjoon Kim
Keyword(s):  
Stochastic Resonance ◽  
Energy Harvester ◽  
Vibration Energy ◽  
Vibration Energy Harvester
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