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Guo W.,Hebei Institute of Architecture and Civil Engineering | Meng Y.,MCC Capital Engineering and Research Incorporation Ltd
Applied Mechanics and Materials | Year: 2012

The test on was rammed soil-cement pile composite foundation was done,On the basis of the test. Numerical simulation was analyzed to rammed soil-cement piles.The conclusions were draw from the main frequency,level acceleration, vertical acceleration and influence factors.Theory basis was provided for the study on rammed soil-cement pile composite foundation in the future. © (2012) Trans Tech Publications, Switzerland.

Sun W.,Northeastern University China | Qi F.,MCC Capital Engineering and Research Incorporation Ltd
Jisuan Lixue Xuebao/Chinese Journal of Computational Mechanics | Year: 2013

Mechanical parameters of viscoelastic damping materials will change with frequency, namely have frequency-dependent property, thus the traditional dynamics modeling and analysis methods are not satisfied with the requirement of optimization design of coating structure. On the basis of introducing the frequency-dependence property of visco-elastic damping materials, an efficient numerical method which is named as eigenvector increment method (EIM) is presented for analyzing the nature characteristics of coating composite structure in the paper. The theory of EIM is derived and relative solving flow chart is put forwards. The flow chart includes calculating the nature characteristics of undamped system, solving the complex eigenvector increment used Fox and Kapoor or Nelson method, acquiring the complex eigenvalues adapted Rayleigh quotient method. At last, a titanium thin plate coated visco-elastic damping layer is taken as study object, the nature characteristics are solved by EIM. The correctness of proposed method is proved, by comparing the results with the classical modal strain energy(MSE) method.

Liu D.,MCC Capital Engineering and Research Incorporation Ltd
ICSPS 2010 - Proceedings of the 2010 2nd International Conference on Signal Processing Systems | Year: 2010

This paper focus on marking process simulation and product identification of Plate Marking Machine, which are the two basic process of product life trace. The system construction, working principle and marking process are introduced, and the virtual simulation can run step by step and be saved as bitmap file or stream file. A new Vector arithmetic is introduced in character recognition with standard recognizing library instead of special library which needs a lot of training process. In vector arithmetic new x-y axis are built with least-squares method which estimates the measurable step units. The simulation and character recognition give a better resolution of marking machine for BaoSteel especially in product life trace, which has good actual performance. © 2010 IEEE.

Jiang N.,Tianjin University | Huang L.,MCC Capital Engineering and Research Incorporation Ltd
Advanced Materials Research | Year: 2013

This paper studied the impact of differential settlement of foundation on the inner force of architectural structure by applying back-analysis method. By taking the three-dimensional coactions system of upper structure-piled raft foundation-foundation with different pile length and different raft thickness as the research object, its differential settlement law of foundation under the effect of load was studied, which was combined with the practical measured data to fit the quadratic settlement surface equation of the foundation. The analysis demonstrated that the differential settlement of foundation will change the inner force of upper structure significantly, thus enabling most of construction components to produce great additional axial force, additional shearing force and additional bending moment, especially changing the additional inner force of corner post more evidently. © (2013) Trans Tech Publications, Switzerland.

Wang D.,MCC Capital Engineering and Research Incorporation Ltd
Applied Mechanics and Materials | Year: 2012

In this paper, the study object is a vibrating screen driven by two motors. A new analytical method is proposed to study the dynamic feature of the screen. With introduction of two small variable parameters to average angular velocity of two exciters and their phase difference, the parameters of the model were dimensionless processed, and then the synchronization condition and stability condition of the vibrating screen were deduced. Computer simulation results based on synchronization condition and stability condition show that the vibrating screen realizes speed synchronization and phase synchronization, the system is in a good self-synchronous state. © (2012) Trans Tech Publications, Switzerland.

Liu D.,MCC Capital Engineering and Research Incorporation Ltd
2010 International Conference on Machine Learning and Cybernetics, ICMLC 2010 | Year: 2010

Based on coupling and low damp ratio of the marking process, this paper presents a new approach for modeling system by dividing the whole process into several periodic dynamic processes, in which the new methods decouple the pressure system and position servo system and raise the damp ratio of pressure system and lower the inner-influence of paint guns. A theoretic analyses and digital simulation about the system of marking process are made at different paint pressure and different servo speed using Matlab. The simulate results give a better group of system parameters for marking machine in BaoSteel, which has good actual performance and the methods for improving the marking characteristic are given. © 2010 IEEE.

Liu B.,MCC Capital Engineering and Research Incorporation Ltd
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2013

This paper presents a general control iteration algorithm for a class of chaotic systems. The algorithm contains two iterations, which are performance index function iteration and the corresponding control iteration. In order to prove theoretically, two theorems are proposed, which demonstrates the iteration algorithm is convergent. At last, an example is given to show the effectiveness of the proposed algorithm. © 2013 SPIE.

Han P.,MCC Capital Engineering and Research Incorporation Ltd | Chen N.,MCC Capital Engineering and Research Incorporation Ltd | Wang H.,MCC Capital Engineering and Research Incorporation Ltd | Jiang D.,MCC Capital Engineering and Research Incorporation Ltd
Proceedings of the 10th International Conference on Steel Rolling | Year: 2010

This paper describes a novel technique and principle ( uniform section height and centerless grinding) of integrated grinding method on a backup roll in a rolling condition. The integrated no-gap and uniform section height, which is H, grinding method ol backup roll is based on the uniform section height and centerless grinding principle. This theory uses the baseboard of backup roll as assembling datum level and then assembles the whole backup roll, which needs to be grinded, on the basis level of grinding shape. Additionally, near rolling condition grinding point of backup roll contacts with the connecting point of middle roll. Two group pressure rolls is set on both side ol each bearing roll along the width individually for clamping the bearing roll to guarantee stable movement ol bearing roll surface, to avoid bearing clearance and to avoid gaps between each elements in order to ensure the grinding is under no-gap condition. This algorithm, which is a real no-gap integrated grinding method, not only eliminates the gaps between each element in the bearing but also avoids the gaps between bearing roll with supporting-block, eccentricity block and baseboard to make the heights of external annulus cross-sections of each bearing roll are equal to H.

Wu Z.,Northeastern University China | Tang Z.,Northeastern University China | Li H.,Northeastern University China | Zhang H.,MCC Capital Engineering and Research Incorporation Ltd
Jinshu Xuebao/Acta Metallurgica Sinica | Year: 2012

The microstructure and mechanical properties of Fe-18Mn low carbon high manganese TRIP/TWIP steels during tensile tests in the range of initial strain rate of 1.67×10 -4-10 3 s -1 at room temperature were studied. The inverse effect of strain rate on strength of steel was produced, the strength and ductility of steels decreased with increasing strain rate in the range of quasi-static tensile strain rate of 1.67×10 -4-1.67×10 -1 s -1. While inverse effect of strain rate on ductility of steels was produced in the range of dynamic tensile strain rate of 10 1-10 3 s -1, the strength and ductility of materials increased significantly with increasing strain rate. The tensile strength of high manganese TRIP/TWIP steels was 957 MPa and their elongation was 55.8%. These results indicated that Fe-18Mn steel had excellent mechanical properties and good fracture resistance. The higher the strain rates applied, the less martensite, the more directions of deformation twins. The microstructure evolution of the specimen was analyzed by SEM, TEM and XRD, martensitic transformation and deformation twins were produced during the tensile deformation, and adiabatic temperature rise effect made the matrix softening during the high-speed deformation. © Right.

Wang D.,MCC Capital Engineering and Research Incorporation Ltd | Zhao Q.,Metallurgical Mine Company of Hebei Province | Zhao C.,Northeastern University China | Wen B.,Northeastern University China
Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis | Year: 2010

This paper presents a new analytical method to study the dynamic coupling feature of a vibrating system driven by two motors with the same rotation direction. By introducing two variable parameters into the average angular velocity of the two exciters and their phase difference, a concept of torque of frequency capture is put forward after dimensionlessly processing parameters of the system and an equation of frequency capture of the system is deduced. The problem of synchronization is converted into that of existence and stability of zero solution to the equation of frequency capture. The computer simulation results show that the system can realize stable self-synchronous operation state when the parameters of the system meet the demands of frequency capture and that of stable self-synchronous operation. The simulation results verify the correctness of the theoretical analysis.

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