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Erratum: The simulation analysis of lifting type tractor’s ride comfort based on ADAMS/view 勘误表：基于ADAMS/view的举升式拖拉机平顺性仿真分析
Mathematical Models in Engineering Pub Date : 2018-12-31 DOI: 10.21595/mme.2018.20277
Jubin Qiao, H. Yan, Zhiyong Wang
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引用次数: 0
Circular-linear model of the force of dry friction 干摩擦力的圆-线性模型
Mathematical Models in Engineering Pub Date : 2018-12-31 DOI: 10.21595/MME.2018.20503
K. Ragulskis, A. Bubulis, R. Maskeliunas, P. Paškevičius, L. Ragulskis
{"title":"Circular-linear model of the force of dry friction","authors":"K. Ragulskis, A. Bubulis, R. Maskeliunas, P. Paškevičius, L. Ragulskis","doi":"10.21595/MME.2018.20503","DOIUrl":"https://doi.org/10.21595/MME.2018.20503","url":null,"abstract":"In the numerical methods taking into account the force of dry friction numerical approximation is used when performing calculations. Circular-linear approximation for the local transition region is recommended. Results of numerical calculations are presented. The advantages of using this proposed representation are seen from the obtained results presented in this paper.","PeriodicalId":32958,"journal":{"name":"Mathematical Models in Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46551602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Dynamic modeling and simulation of three-member robot manipulator 三机构机械手的动力学建模与仿真
Mathematical Models in Engineering Pub Date : 2018-12-31 DOI: 10.21595/MME.2018.20319
Hristijan Mickoski, Ivan Mickoski, Marjan Djidrov
{"title":"Dynamic modeling and simulation of three-member robot manipulator","authors":"Hristijan Mickoski, Ivan Mickoski, Marjan Djidrov","doi":"10.21595/MME.2018.20319","DOIUrl":"https://doi.org/10.21595/MME.2018.20319","url":null,"abstract":"Dynamic model analysis of manipulator as mechanical structure is presented for further purpose in actuator selection and process for establishing control strategy. Control problems involves determination of control forces and moments applied in manipulator joints that will ensure movements along a certain defined trajectory. Trajectory design is the basis for the manipulator control process. This problem is quite complex because the manipulator is a connected system in which the movement of a member affects the movement of other. Therefore, in following is presented a method for forces and moments determination in kinematic joints of a three-member manipulator analytically and also by using simulation dynamical model in the Matlab/Simulink program package. The friction forces in the kinematics joints are not taken into account.","PeriodicalId":32958,"journal":{"name":"Mathematical Models in Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42453927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
An algorithm based on the convergent cross mapping method for the detection of causality in uni-directionally connected chaotic systems 一种基于收敛交叉映射方法的单向连接混沌系统因果关系检测算法
Mathematical Models in Engineering Pub Date : 2018-09-30 DOI: 10.21595/MME.2018.19989
K. Pukenas
{"title":"An algorithm based on the convergent cross mapping method for the detection of causality in uni-directionally connected chaotic systems","authors":"K. Pukenas","doi":"10.21595/MME.2018.19989","DOIUrl":"https://doi.org/10.21595/MME.2018.19989","url":null,"abstract":"In this paper, we present some improvements to the convergent cross mapping (CCM) algorithm for detecting causality in uni-directionally connected chaotic systems. The basic concept of the CCM algorithm is that the causal influence of system X on system Y appears as mapping of the neighbouring states in the reconstructed d-dimensional manifold, My, to the neighbouring states in the reconstructed d-dimensional manifold, Mx, and this effect is evaluated using the correlation coefficient between the estimated and observed values of Mx. We proposed a composite indicator of causality as the ratio between the correlation coefficient and the Shannon entropy of the distribution of the residuals between the estimated and observed values of Mx. Application of the proposed approach to four master-slave Rossler and Lorenz systems and real-world data showed that the new algorithm allowed a slight increase in capability to reveal the presence and direction of couplings.","PeriodicalId":32958,"journal":{"name":"Mathematical Models in Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46235458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Investigation of elliptical approximation in the model of the force of dry friction 干摩擦力模型中椭圆近似的研究
Mathematical Models in Engineering Pub Date : 2018-09-30 DOI: 10.21595/MME.2018.20001
K. Ragulskis, A. Bubulis, P. Paškevičius, A. Pauliukas, L. Ragulskis
{"title":"Investigation of elliptical approximation in the model of the force of dry friction","authors":"K. Ragulskis, A. Bubulis, P. Paškevičius, A. Pauliukas, L. Ragulskis","doi":"10.21595/MME.2018.20001","DOIUrl":"https://doi.org/10.21595/MME.2018.20001","url":null,"abstract":"In the numerical procedures involving the force of dry friction some type of numerical approximation for this investigated phenomenon is used in the process of calculations. Elliptic approximations for the local transition region are proposed, and numerical results are presented in this paper. The smoothness and continuity of this approximation is demonstrated by several computational experiments.","PeriodicalId":32958,"journal":{"name":"Mathematical Models in Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46215139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Analytical solution for modal analysis of Euler-Bernoulli and Timoshenko beam with an arbitrary varying cross-section 任意变截面Euler-Bernoulli和Timoshenko梁模态分析的解析解
Mathematical Models in Engineering Pub Date : 2018-09-30 DOI: 10.21595/MME.2018.20116
F. Sohani, H. Eipakchi
{"title":"Analytical solution for modal analysis of Euler-Bernoulli and Timoshenko beam with an arbitrary varying cross-section","authors":"F. Sohani, H. Eipakchi","doi":"10.21595/MME.2018.20116","DOIUrl":"https://doi.org/10.21595/MME.2018.20116","url":null,"abstract":"In this article, the free vibrations of Euler-Bernoulli and Timoshenko beams with arbitrary varying cross-section are investigated analytically using the perturbation technique. The governing equations are linear differential equations with variable coefficients and the Wentzel, Kramers, Brillouin approximation is adopted for solving these eigenvalue equations and determining the natural frequencies and mode shapes. This method relates the solution of equations with the solving of some successive algebraic equations. A parametric study is performed and the effects of different profiles and different combinations of boundary conditions on the natural frequencies are investigated. To confirm the reliability of the present method, the analytical results are checked with those obtained from the finite elements method and other literatures which are found to be in a good agreement. The calculations show that the presented procedure is very effective to find the modal characteristics of the varying cross-sections beams.","PeriodicalId":32958,"journal":{"name":"Mathematical Models in Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44801481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
The simulation analysis of lifting type tractor’s ride comfort based on ADAMS/view 基于ADAMS/view的举升式拖拉机平顺性仿真分析
Mathematical Models in Engineering Pub Date : 2018-09-30 DOI: 10.21595/MME.2018.19949
Jubin Qiao, Haijing Yan, Zhiyong Wang
{"title":"The simulation analysis of lifting type tractor’s ride comfort based on ADAMS/view","authors":"Jubin Qiao, Haijing Yan, Zhiyong Wang","doi":"10.21595/MME.2018.19949","DOIUrl":"https://doi.org/10.21595/MME.2018.19949","url":null,"abstract":"Heavy tractors always work in full load, shock loading and vibration environment. The working environment is harsh, besides the vibration of the cab can easily cause driver fatigue and affect the driving comfort and safety. In this paper, taking a type of lifting tractor as a research object, the vehicle simulation model and the road model was established by ADAMS/VIEW software to simulate the vehicle's ride comfort, the weighted RMS acceleration of the cab floor in random input and the maximum vertical acceleration of the cab seat in pulse input was calculated. The calculation results and the ride comfort evaluation standard were compared and analyzed, which laid the theoretical foundation for the design and optimization of tractor’s cab.","PeriodicalId":32958,"journal":{"name":"Mathematical Models in Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46652911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of air disc brake in mining electric locomotive 空气盘式制动器在矿用电力机车上的应用
Mathematical Models in Engineering Pub Date : 2018-09-30 DOI: 10.21595/MME.2018.19975
Zhaosong Li, B. Liang, Jilei Xu
{"title":"Application of air disc brake in mining electric locomotive","authors":"Zhaosong Li, B. Liang, Jilei Xu","doi":"10.21595/MME.2018.19975","DOIUrl":"https://doi.org/10.21595/MME.2018.19975","url":null,"abstract":"In order to shorten the braking distance of mining electric locomotive and improve the safety of underground transportation effectively. The existing handwheel-brake shoe brake device is analyzed. In view of its shortcomings, an air disc brake device and a tread sweeper are put forward. Through calculation verification and simulation analysis, it is found that the device can shorten the braking distance of mining electric locomotive effectively and it can meet the requirements of The Specification of Narrow Tramroad Gauge Electric Locomotive for Mine. It has a certain degree of application value and practical significance.","PeriodicalId":32958,"journal":{"name":"Mathematical Models in Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43163908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The optimal control of semi-active suspension based on improved particle swarm optimization 基于改进粒子群优化的半主动悬架优化控制
Mathematical Models in Engineering Pub Date : 2018-09-30 DOI: 10.21595/MME.2018.20041
Haijing Yan, Jubin Qiao, Sen Zhang, Ting Zhao, Zhongchang Wang
{"title":"The optimal control of semi-active suspension based on improved particle swarm optimization","authors":"Haijing Yan, Jubin Qiao, Sen Zhang, Ting Zhao, Zhongchang Wang","doi":"10.21595/MME.2018.20041","DOIUrl":"https://doi.org/10.21595/MME.2018.20041","url":null,"abstract":"For the lack of artificial experience in weighted matrix Q and R in LQR optimal control algorithm of suspension, this paper proposed an optimal control strategy based on improved particle swarm optimization for semi-active suspension system. The paper mainly established a quarter vehicle semi-active suspension system model in MatLab, and wrote the S-function of the optimal controller. In addition, this article optimized weighted coefficient matrix Q of the state variable and the weighted coefficient matrix R of the control variable in the linear quadratic regulator (LQR) [1] by utilizing the improved particle swarm optimization. The simulation results showed that the semi-active suspension system which based on the improved particle swarm optimization (IPSO) had better ride comfort and smoothness.","PeriodicalId":32958,"journal":{"name":"Mathematical Models in Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41645105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Non-linear vibration analysis of oleo pneumatic landing gear at touchdown impact 油气起落架在着陆冲击下的非线性振动分析
Mathematical Models in Engineering Pub Date : 2018-06-30 DOI: 10.21595/MME.2018.19895
S. Sivakumar, M. Syedhaleem
{"title":"Non-linear vibration analysis of oleo pneumatic landing gear at touchdown impact","authors":"S. Sivakumar, M. Syedhaleem","doi":"10.21595/MME.2018.19895","DOIUrl":"https://doi.org/10.21595/MME.2018.19895","url":null,"abstract":"In this paper, nonlinear vibration analysis of a typical aircraft oleo pneumatic landing gear has been done. Mathematical model of the main landing gear is developed, and dynamic equations have been written incorporating the effect of lift force, friction force to study the landing gear behaviour at touchdown condition. The nonlinear effect of stiffness, damping coefficient properties are considered in the analysis. The displacement, velocity, acceleration values are obtained on different landing velocities by numerical simulations using MATLAB/Simulink. Using the same parameters of the aircraft, landing gear and tire, the dynamic analysis was also done in ABAQUS. The results obtained by the nonlinear vibration analysis using the developed model in MATLAB/Simulink have close agreement with the results obtained from ABAQUS. On the basis of the presented model, dynamic simulations of landing for large transport aircraft were performed for different sink velocities. The developed model is also helpful to fine tune the stiffness and damping properties of landing gear in the design stage itself to reduce the replacement / repair cost and increase the life of landing gear assembly.","PeriodicalId":32958,"journal":{"name":"Mathematical Models in Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44907274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
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