scholarly journals EXPERIMENTAL STUDY ON PERFORMANCE DESIGN METHOD FOR LINKED FLUID INERTIA MASS DAMPER

2017 ◽  
Vol 82 (737) ◽  
pp. 991-1001
Author(s):  
Kazuki WATAI ◽  
Satsuya SODA
Keyword(s):  
Experimental Study ◽  
Design Method ◽  
Fluid Inertia ◽  
Mass Damper

An experimental study on the design method of a real-sized Mobile Bridge for a moving vehicle

2014 ◽  
Author(s):  
Y. Chikahiro ◽  
I. Ario ◽  
M. Nakazawa ◽  
S. Ono ◽  
J. Holnicki-Szulc ◽  
...  
Keyword(s):  
Experimental Study ◽  
Design Method ◽  
Moving Vehicle

Experimental Study on Quadruped Wheel Robot for Wheat Precision Seeding

2016 ◽  
Vol 693 ◽  
pp. 1651-1657 ◽  
Author(s):  
Hai Bo Lin ◽  
Chui Jie Yi ◽  
Zun Min Liu
Keyword(s):  
Experimental Study ◽  
Field Test ◽  
Design Method ◽  
Operating Conditions ◽  
High Yield ◽  
Orthogonal Rotation ◽  
Agricultural Machine ◽  
Main Factors ◽  
Multiple Effort

The wheat precision seeding technology provided an advanced agricultural protection for the high yield of wheat. But the lack of an effective agricultural machine made this technology difficult to apply widely. In this paper a quadruped wheel robot to achieve the wheat precision seeding technology was designed. And experimental study was taken under different operating conditions. Because of multiple effort factors, a quadratic orthogonal rotation combination design method was applied in the experiments, and identifying the main factors by analysis. Then the field test was carried out according to the main factors. The experiment results showed that the qualified rates of seeding exceed 93% in different sowing speed. That reached the agronomic requirements of wheat precision seeding.

scholarly journals METODE MENGAJAR DAN MOTIVASI TERHADAP HASIL BELAJAR KETERAMPILAN SERVIS FLATTENIS LAPANGAN(STUDI EKSPERIMEN PADA MAHASISWA FIK UNM MAKASSAR)

2020 ◽  
Vol 12 (1) ◽  
pp. 21
Author(s):  
Hasbunallah AS ◽  
Ahmad Rum Bismar
Keyword(s):  
Experimental Study ◽  
Learning Outcomes ◽  
Teaching Methods ◽  
Design Method ◽  
Learning Motivation ◽  
High Learning ◽  
Significance Level ◽  
Analysis Technique ◽  
Lower Effect ◽  
Academic Year

The aim of this experimental study was todetermine the effect of all teaching methods, part, mixed and motivation result learning toward of flat service skill courts tennis. Learning motivation is divided into two parts, namely high andlow.This research was conducted at Faculty of Sport ScienceState University of Macassar,the academic year 2014/2015. Experimental using factorial design method 2x3. The sample consisted of 60 students were divided into 6 groups, each consisting of 10 students. Data analysis technique is a two-way analysis of variance (ANOVA) followed by Tukey's test at a significance level of α= 0.05. The results of this study indicate that ( (1) overall teaching methods higher effect of the part teacing methods on learning outcomes flat tennis service skills (2) overall teaching methods lower effect of the part teacing methods on learning outcomes flat tennis service skills, (3) overall teaching methods lower effect of the part teacing methods on learning outcomes flat tennis service skills,(4) there is interaction between the overall teaching methods, part teaching methods and combined teaching methods and learning motivation outcomes flat tennis service skills,(5) overall teaching methods higher effect of the part teacing methods on learning outcomes flat tennis service skillsusing a high learning motivation, (6) overall teaching methods lower effect of the part teacing methods on learning outcomes flat tennis service skillsusing a high learning motivation, (7) part teaching methods lower effect of the combined teacing methods on learning outcomes flat tennis service skillsusing a high learning motivation, (8) overall teaching methods higher effect of the part teacing methods on learning outcomes flat tennis service skillsusing a low learning motivation, (9) overall teaching methods lower effect of the part teacing methods on learning outcomes flat tennis service skillsusing a low learning motivation, (10) part teaching methods lower effect of the combined teacing methods on learning outcomes flat tennis service skillsusing a low learning motivation.

Analytical analysis for the design of nonlinear tuned mass damper

2020 ◽  
Vol 26 (9-10) ◽  
pp. 646-658
Author(s):  
Lu-yu Li ◽  
Tianjiao Zhang
Keyword(s):  
Passive Control ◽  
Design Method ◽  
Tuned Mass Damper ◽  
Control Device ◽  
Control Performance ◽  
Tuned Mass Dampers ◽  
Mass Damper ◽  
Practical Engineering ◽  
Optimum Formula ◽  
Nonlinear Tuned Mass Damper

A tuned mass damper is a passive control device that has been widely used in aerospace, mechanical, and civil engineering as well as many other fields. Tuned mass dampers have been studied and improved over the course of many years. In practical engineering applications, a tuned mass damper inevitably produces some nonlinear characteristics due to the large displacement and the use of the limiting devices, but this nonlinearity is often neglected. The simulation results in this study confirm that neglecting the nonlinearity in the design process can produce adverse effects on the control performance. This paper takes into account the nonlinearity of the tuned mass damper produced in the process of vibration and deduces an optimum formula for the frequency of a tuned mass damper by the complexification averaging method and multiscale method. Based on this formula, a modified design method for the frequency of a tuned mass damper is presented. The numerical results show that the nonlinear tuned mass damper after modification is better than a linear tuned mass damper in terms of control performance.

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