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Wang X.,Harbin Institute of Technology | Wang X.,703 Research of Institute | Wang Y.,Heilongjiang Institute of Technology | Zhao X.,Harbin Institute of Technology | And 2 more authors.
Journal of Computational and Theoretical Nanoscience | Year: 2016

Fracture toughness is a key parameter of brittle films, while stress-strain relation is important to metallic films. Especially, when test piece size is very small, such as micro structure, thin brittle films material, or some material that is difficult to process. The traditional method of uniaxial tension or compression test is difficult or unable to measure stress-strain relation, other feasible methods for measuring this type material should be sought. In this study, the definition of different representative strain is compared using real contact area and the method to estimate equivalent stress-strain (ESS) relation of metallic materials is improved, and validated by finite element analysis using different common metals. A method for experimentally estimating ESS curves from one indentation test is presented and extended to determine ESS relation of thin brittle films using nano indentation. Copyright © 2016 American Scientific Publishers All rights reserved.


Wang Y.,Heilongjiang Institute of Technology | Wang X.,Harbin Institute of Technology | Wang X.,703 Research of Institute
Key Engineering Materials | Year: 2014

With the development of computer technology, communication technology, electronic technology and automatic control technology, computer control technology widespread application, has been widely used in iron and steel, petroleum, chemical, electric power, building materials, machinery manufacturing, automotive, textile, transportation and other industries. Controlled by computer, we can realize the control of high reliability, process visualization, remote monitoring, data storage and processing. The simulation of PID control algorithm, and focuses on the study and analysis of the digital PID control algorithm, the marine gear lube oil temperature control system model, the three parameters of digital PID: proportional coefficient, integral constant, differential constant on the control system performance was also analyzed. © (2014) Trans Tech Publications, Switzerland.


Zhao X.,Harbin Institute of Technology | Wang X.,703 Research of Institute | Wang Y.,Heilongjiang Institute of Technology
Key Engineering Materials | Year: 2014

In the paper, for high-power marine overflow valve of low pressure big traffic problems, the design of the inside leaking mouth leaks in parallel structure ,that is suitable for the different oil and water flow, using additional flow beam, guiding type low pressure large flow overflow valve was developed and the experimental study, obtained the dynamic and static parameters of the valve. Invented the inside leaking and leaked mouth parallel connection structure, inside leaking and leaked mouth parallel connection is established the mathematical model of the overflow valve. Results show that compared with the traditional straight moving type overflow valve, the type overflow valve through a larger flow, has better dynamic and static performance and cavitation resistance.


Zhao X.,Harbin Institute of Technology | Wang X.,703 Research of Institute | Wang Y.,Heilongjiang Institute of Technology
Key Engineering Materials | Year: 2014

This paper mainly consider the friction plate finite element modeling frictional contact conditions between the slices of components, friction plate assembly of the strength and stiffness of the. Through modal analysis of force and its distribution in different layers of friction plate assembly friction plate, a friction plate component analysis layers, friction plate by the effect of preload on the friction plate assembly strength, and in this state analysis of the friction plate stiffness. On the contact state under different friction plate layers, different pre tightening force under stress, stiffness were compared, the effect of contact on the stiffness and friction plate component strength.


Wang Y.,Heilongjiang Institute of Technology | Wang X.,Harbin Institute of Technology | Wang X.,703 Research of Institute
Key Engineering Materials | Year: 2014

Signal of PLC controller by PID operation after the output of numerical simulation between 0~1, and solid state relay can receive only signal, digital or switched on or off. Only connected the two, temperature control system can be realized. The experimental approach is to learn from PWM pulse width modulation technology, the numerical analog PID controller output into the heating time in a cycle, namely, solid state relay on time. By this method, the indirect control heating rod of equivalent power, the power output of the heating rod according to the control signal of controller output, so as to realize marine gear oil temperature PID regulation. This paper designs the control system used in the experiment. The temperature control experiment system; design of the electrical schematic diagram of the temperature control system, including two parts electrical schematic diagram of control circuit and main circuit of temperature control system design process. At the same time, the experimental scheme is designed. Analysis of the mechanism of temperature balance control object, and focus on the temperature within the experimental results are analyzed. © (2014) Trans Tech Publications, Switzerland.


Zhao X.,Harbin Institute of Technology | Wang X.,Harbin Institute of Technology | Wang X.,703 Research of Institute | Wang Y.,Heilongjiang Institute of Technology
Key Engineering Materials | Year: 2014

In the study of the dynamic characteristics of the system, should pay attention to the influence on the dynamic performance of the system mode change. Mode change is closely related with mutation phenomena of mode localization process, in the natural frequency with the change of parameters, with a large curvature are quickly turned to separate the two natural frequency curve in the close position. Mode change will lead to the drastic changes in the natural frequency and modal energy, the variation of system parameters is also the location of the influence degree mutation position. Based on the modal characteristics of unique two stage power branch double wide helical planetary composite transmission system, studied the mode change phenomena, reveal the modal system changes. © (2014) Trans Tech Publications, Switzerland.


Zhao X.,Harbin Institute of Technology | Wang X.,Harbin Institute of Technology | Wang X.,703 Research of Institute | Wang Y.,Heilongjiang Institute of Technology
Key Engineering Materials | Year: 2014

In this paper, dynamic model of two stage power branch double wide helical gear planetary drive system based on complex, in-depth study of the natural vibration characteristic. Starting from the first star and second planetary gear around the sun wheel non equidistant arrangement in the respective gear train, calculating modal analysis of characteristics of the system, so as to understand the mechanism of the system vibration, to provide theoretical guidance for the design of underwater device two power branch double wide helical planetary composite transmission system. At the same time to improve the dynamic characteristics of the device structure of underwater engineering significance. © (2014) Trans Tech Publications, Switzerland.


Wang X.,Harbin Institute of Technology | Wang X.,703 Research of Institute | Wang Y.,Heilongjiang Institute of Technology | Zhao X.,Harbin Institute of Technology | Li X.,Hangzhou Bearing Test and Research Center
Journal of Mechanical Science and Technology | Year: 2015

Gear backlash and time-varying nonlinear meshing stiffness are the key design attributes of modern warship planetary gear transmission. The transmission prominent concern is teeth surface friction dynamics affect behavior and way. Therefore, the change of direction in meshing process, teeth surface friction will generate a larger oscillation, excitation response and energy consumption ways to affect dynamic characteristics of planetary gear transmission, which makes response range, dynamic behaviors more complex. Gear model and multi scale equations for transmission are established, analyzing incentive role teeth surface friction when considering dynamic and static load on influence law of gear resonance frequency response. © 2015, The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg.


Yang J.C.,Harbin Institute of Technology | Yao Z.H.,Harbin Institute of Technology | Wang X.G.,703 Research of Institute
Applied Mechanics and Materials | Year: 2014

A new optimum design process is established by mathematical model in this paper based on the theory of material mechanics and electricity. According to optimization,the conductive ring device is designed. Based on virtual modeling under abaqus, the simulation validation of experimental design is carried out.contact resistance is calculated under contact states. A series of data measured in simulation shows that this final optimum design of conductive ring has a better performance than the experimental design in physical properties. © (2014) Trans Tech Publications, Switzerland.


Wang Y.,Heilongjiang Institute of Technology | Wang X.,703 Research of Institute
Key Engineering Materials | Year: 2014

Based on the embedded flexible clutch mechanism as the breakthrough point, using ADAMS dynamic analysis software and ANSYS simulation analysis software, established the analysis model, the peak impact force between the different conditions of brake wheel and brake claw was obtained, the brake wheel and the brake pawl two allowable angular speed difference. At the same time to brake wheel and brake claw structure impact resistance ability as optimization objective, the different structural forms of brake wheel and brake claw structure peak impact in different conditions and the brake wheel and brake claw two permissible angular speed difference is analyzed and calculated.

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