Nonlinear Analysis of a Simple Pendulum With Large Displacement

2007 ◽  
Author(s):  
Rujian Ma ◽  
Guixi Li ◽  
Dong Zhao
Keyword(s):  
Numerical Simulation ◽  
Nonlinear System ◽  
Nonlinear Analysis ◽  
Frequency Ratio ◽  
Damping Ratio ◽  
Frequency Characteristics ◽  
Large Displacement ◽  
Analysis Method ◽  
Simple Pendulum ◽  
The Relationship

The vibration of simple pendulum with large displacement is a kind of nonlinear system. The relationship between spectra of response and excitation is established by nonlinear analysis method under the assumption of the displacement response being a zero-mean Gaussian process, which is proved to be true by numerical simulation. The numerical computation is used to investigate the amplitude-frequency characteristics of the system. The results show that the value of amplitude-frequency characteristics decreases significantly with the increase of natural frequency and damping ratio near the point of frequency ratio being one, and the changes become less notable when the frequency ratio is greater than two.

Dynamic Analysis of the Vibration System With Nonlinear Springs

2007 ◽  
Author(s):  
Guixi Li ◽  
Rujian Ma ◽  
Jungang Wang
Keyword(s):  
Numerical Simulation ◽  
Dynamic Analysis ◽  
Dynamic Characteristics ◽  
Damping Ratio ◽  
Excitation Intensity ◽  
Vibration System ◽  
Analysis Method ◽  
Frequency Curve ◽  
Nonlinear Springs ◽  
The Relationship

The dynamic characteristics of vibration systems with nonlinear springs is analyzed in the paper. The relationship between spectra of response and excitation intensity is established by nonlinear analysis method under the assumption of the displacement response being a zero-mean Gaussian process, which is proved to be true by numerical simulation. The numerical computation is used to obtain the spectral densities of responses and, furthermore, to investigate the amplitude-frequency characteristics of the system. The results show that the peak of the amplitude-frequency curve goes higher with increase of the gap, yet lowers with the increase of natural frequency and drops significantly with the increase of damping ratio.

Research on Sliding Cable with a Nonlinear Analysis Method for a Cable-Membrane Structure

2011 ◽  
Vol 243-249 ◽  
pp. 263-267
Author(s):  
Kai Liu ◽  
Xin Yi Wang
Keyword(s):  
Nonlinear Analysis ◽  
Computational Methods ◽  
Membrane Structure ◽  
Numerical Models ◽  
Analysis Method ◽  
Membrane Surfaces ◽  
Original Length ◽  
Non Linear ◽  
The Relationship ◽  
Finite Method

Cable sliding in membrane pockets or on membrane surfaces has not yet been considered in analysis of cable-membrane structure software. In this study, a new sliding cable element has been created, using the non-linear finite method and a model of line-elastic and non-linear sliding stiffness. First, this paper outlines existing computational methods for creating sliding cables and questions the accuracy of these current numerical models. Second, it determines the sliding stiffness of sliding cables by examining the relationship between the original length and the end tension of space two-node linear cable elements. Third, the solution arithmetic for cables sliding in membrane pockets or on membrane surfaces is proposed with consideration of correctional linear sliding stiffness. Finally, the method developed herein is validated by one example.

ÖRGÜTLERDE ÖRGÜTSEL BOLLUĞUN GİRİŞİMSEL ORYANTASYON ÜZERİNDEKİ ETKİSİ

2016 ◽  
Vol 4 (3) ◽  
Author(s):  
Nurdan Gürkan ◽  
Ahmet Ferda Çakmak
Keyword(s):  
Corporate Governance ◽  
Data Analysis ◽  
Panel Data ◽  
Strategic Management ◽  
Significant Relationship ◽  
Entrepreneurial Orientation ◽  
Panel Data Analysis ◽  
Organizational Slack ◽  
Analysis Method ◽  
The Relationship

The concept of entrepreneurial orientation, which emerges with the development of strategic management, refers to entrepreneurship orientations of businesses. The businesses need resources in other words organizational slack in order to develop their entrepreneurial trends. The organizational slack consists of three slack type. These slack types are available slack, recoverable slack and potential slack. The purpose of this study is to examine whether organizational slack in the businesses has an effect on entrepreneurial orientation. The relationship between organizational slack and entrepreneurial orientation was investigated through 20 companies that were traded in Borsa Istanbul Corporate Governance Index for 2010-2014 period using panel data analysis method. The results of the study indicate the existence of a statistically significant relationship between and the available slack and the recoverable slack with the entrepreneurial orientation in the businesses. According to findings; there was no statistically significant relationship between potential slack and entrepreneurial orientation.

PENGARUH KUALITAS PRODUK DAN KUALITAS PELAYANAN TERHADAP PENINGKATAN KEPUASAN DAN LOYALITAS PELANGGAN PERUSAHAAN DAERAH AIR MINUM (PDAM) KOTA MAKASSAR

2019 ◽  
Vol 3 (2) ◽  
pp. 228-244 ◽  
Author(s):  
Muhammad Rezha Pahlawan ◽  
Nurlia Nurlia ◽  
Abdul Rahman Laba ◽  
Erlina Pakki ◽  
Hardiyono Hardiyono
Keyword(s):  
Customer Satisfaction ◽  
Service Quality ◽  
Product Quality ◽  
Customer Loyalty ◽  
Indirect Effects ◽  
Analysis Method ◽  
Water Company ◽  
The Relationship ◽  
Intervening Variables ◽  
Customer Satisfaction And Loyalty

This study aims to determine the effect of Product Quality and Service Quality on Increasing Customer Satisfaction and Loyalty in Makassar Municipal Water Company (PDAM) both directly and through intervening variables or indirect effects. This study uses a quantitative approach conducted with the aim to explain the position of the variables studied and the relationship between one variable with another variable. This research will explain the causal relationship between variables through hypothesis testing. In this study, the analysis method used is path analysis using the SmartPLS program. The results of this study found that directly the product quality had a positive and significant effect on customer satisfaction, service quality had a positive and significant effect on customer satisfaction, product quality had a positive and significant effect on customer loyalty, service quality had a positive and not significant effect on customer loyalty, customer satisfaction positive and significant effect on customer loyalty. The indirect effect of this research is product quality has a positive and significant effect on customer loyalty if mediated by customer satisfaction. Service quality also has a positive and significant effect on customer loyalty if mediated by customer satisfaction.

Optimization of Pan Coating Process for Increased Efficiency of Controlled-Release Urea Fertilizer

2021 ◽  
Vol 57 (4) ◽  
pp. 333-342
Author(s):  
Trung Huu Nguyen ◽  
Tran Nguyen Minh An ◽  
Mahboob Alam ◽  
Duc Hoai Tran ◽  
Nghi Tran ◽  
...  
Keyword(s):  
Controlled Release ◽  
Layer Thickness ◽  
Release Time ◽  
Coating Process ◽  
Analysis Method ◽  
Sauter Mean Diameter ◽  
Urea Fertilizer ◽  
The Relationship ◽  
Central Composite ◽  
Controlled Release Urea

The goal of the research is to develop an experimental mathematical model of pan coating process effect on the biodegradable polymer and to determine optimal process parameters. The polymer solution was conducted with phosphated di-starch phosphate, polyvinyl alcohol, and polyacrylic acid and performed as material coating for the controlled-release urea fertilizer. The image analysis method has been used to determine the particle size distribution, Sauter mean diameter of the particle and layer thickness that is novel. The central composite rotatable design has been selected to determine the regression models of the process, which described the relationship between two objective variables as layer thickness, release time with angle of pan, spray flow, and coating time. The statistical analysis results indicate the fitness of model.

Evidential Study of Relationship between Flexible Drift of Fuel Nozzle Performance and Hot-End Failure of X Engine

2014 ◽  
Vol 651-653 ◽  
pp. 724-728
Author(s):  
Yong Gang Xu ◽  
Qiang Wang
Keyword(s):  
Abrupt Change ◽  
Initial Period ◽  
Flow Property ◽  
Analysis Method ◽  
Comparison Analysis ◽  
Fuel Nozzle ◽  
Converging Flow ◽  
The Relationship ◽  
Relative Scarcity ◽  
Engine Start

By means of the fountain-convergence analysis method of FRRU (Flow Resistance-Rigidity Uniformity) index defined by the author, evidential comparison analysis study has been made to the relationship between flexible drift of flow performance of WTD (Weight Type Distributor) valves of fuel nozzles of X engine and hot-end failures of X engine. The results show that during the initial period of engine start, because of the relative scarcity of air in the combustor, a convergence characteristic, due to its converging flow property ofmultiple to one, can lead to such hot-end failures as turbine blade fusion break which is characterized byabrupt change, while a fountain characteristic, due to its diffusing flow property ofone tomultiple, cannot result in any hot-end failures.

Some Relationship between Safety Factor of Earthquake Slope and Related Parameters

2011 ◽  
Vol 422 ◽  
pp. 688-692
Author(s):  
Xiao Hei He ◽  
Geng You Han ◽  
Rui Hua Xiao
Keyword(s):  
Numerical Simulation ◽  
Rock Mechanics ◽  
Safety Factor ◽  
Limit Equilibrium ◽  
Static Method ◽  
Acceleration Coefficient ◽  
The Wenchuan Earthquake ◽  
Stability Of Slope ◽  
The Stability ◽  
The Relationship

Abstract:Since the Wenchuan earthquake happened, the slope stability had been paid much more attention. The safety factor is an important parameter that can be used to evaluate the stability of slope. The pseudo-static method that based on limit equilibrium and the method of numerical simulation can calculate the safety factor accurately, but the velocity that gets the result is slow. If we can establish the relationship between safety factor and some other parameters, then we can calculate the safety factor by using the relationship more quickly. This paper establishes much relationship, such as the relationship between the rock mechanics parameters and the average danymic safety factor, the relationship between the rock mechanics parameters and the ratio of average danymic safety factor to static safety factor, the relationship between the rock mechanics parameters and the average earthquake acceleration coefficient, the relationship between the average earthquake acceleration coefficient and the ratio of average danymic safety factor to static safety factor, and the relationship between the earthquake acceleration coefficient and the ratio of danymic safety factor to static safety factor on the condition of different rock mass.

scholarly journals THE DEVELOPMENT OF THE QUALITY MANAGEMENT SYSTEM IN TERMS OF KNOWLEDGE MANAGEMENT / KOKYBĖS VADYBOS SISTEMŲ TOBULINIMAS ŽINIŲ VADYBOS ASPEKTU

2011 ◽  
Vol 3 (4) ◽  
pp. 113-119
Author(s):  
Romualdas Vitkauskas
Keyword(s):  
Knowledge Management ◽  
Quality Management ◽  
Quality Management System ◽  
Analysis Method ◽  
Continual Improvement ◽  
Correlation Analysis Method ◽  
Product And Process ◽  
Quality Of Products ◽  
The Relationship

The interaction of quality management and knowledge man­agement are analyzed quite widely in scientific literature and discussed with reference to various models integrating these two management theories. However, there are not enough precise tools that could provide a possibility of improving the quality of products and services through knowledge management. To this end, the article examines the already existing models for the interaction between quality management and knowledge management. The results of a survey on Lithuanian industry show what organizational knowledge is the most important while implementing quality management principles aimed at improving quality. The correlation analysis method showed the relationship between quality management principles (process approach, continual improvement, management, facts) and the factors defining the product and process quality (the extent of determining process execution time, process resources, costs of process stages, indicators for products and/or services, the dura­tion of the process, the extent of measuring indicators, the extent of collecting information on indicators, the extent of collecting information about the costs of the process). Santrauka Kokybės vadybos ir žinių vadybos sąveika mokslinėje literatūroje analizuojama gana plačiai, aptariami įvairūs sąveikos modeliai integruojant šias dvi vadybos teorijas. Tačiau nepakankamai nagrinėjamos konkrečios priemonės, kuriomis būtų galima pagerinti produktų ir paslaugų kokybę pasitelkiant žinių vadybą. Tuo tikslu straipsnyje analizuojami jau egzis­tuojantys kokybės vadybos ir žinių vadybos sąveikos modeliai bei pateikiami Lietuvos pramonės įmonių tyrimo rezultatai, parodantys, kokios organizacinės žinios svarbiausios įgyvendinant kokybės vadybos principus, skirtus kokybei gerinti. Taikant koreliacinės analizės metodą nustatyta, kad egzistuoja ryšys tarp kokybės vadybos principų (procesinio požiūrio, nuolatinio gerinimo, valdymo remiantis faktais) įgyvendinimo lygio ir veiksnių, apibūdinančių produktų ir procesų kokybę (procesų įvykdymo laiko nustatymas, procesų išteklių nustatymas, procesų etapų išlaidų nustatymas, produktų ir (ar) paslaugų rodiklių nustatymas, rodiklių matavimas, rodiklių informacijos rinkimas, informacijos apie proceso trukmę nustatymas ir informacijos apie proceso išlaidas rinkimas).

Examining a Model of Human Resource Performance in Tourism Destination After Pandemic

2021 ◽  
Vol 25 (2) ◽  
pp. 175
Author(s):  
Dian Marlina Verawati, Andhatu Achsa, Ivo Novitaningtyas
Keyword(s):  
Organizational Commitment ◽  
Human Resource ◽  
Structural Equation ◽  
Equation Model ◽  
Mediating Effect ◽  
Analysis Method ◽  
Tourism Destination ◽  
Collection Method ◽  
Leadership Motivation ◽  
The Relationship

During the new normal era after pandemic Covid-19, the tourism destination needs to struggle and adapt for recovery. This process requires optimal human resource performance. The objective of this study is to examine the model of human resource performance in tourism destination after pandemic. Leadership, motivation, and organizational commitment are consider as the antecedents of human resource performance. This study implements a quantitative approach. The data collection method used a questionnaire that distributed to 105 employees in Balkondes as respondent. The data analysis method used Structural Equation Model (SEM) with AMOS. The results show that leadership, motivation, and organizational commitment have a positive and significant effect on human resource performance. The results also show that organizational commitment has mediating effect on the relationship between leadership toward human resource performance, and motivation toward human resource performance.

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