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检索条件"机构=Key Laboratory of Advanced Forging Forming Technology"

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Investigation on the Microstructures and Tensile Properties of TA15 Titanium Alloy Thick-Wall Parts Formed by Laser Rapid forming Process

Investigation on the Microstructures and Tensile Properties ...

引用

2012 International Conference on Advances in Materials Science and Engineering(AMSE 2012)

作者： Mingzhe Xi Key Laboratory of Advanced Forging & Stamping Technology and Science (Yanshan University) Ministry of Education of China

TA15 titanium alloy thick-wall parts have been deposited by Laser rapid forming(LRF) *** this paper, a new overlap method between two adjacent laser tracks has been used to deposit the thick-wall titanium *** showed that the LRFed thick-wall titanium part was good in shape by using the new overlap *** microstructure of the LRFed titanium alloy primarily consists of columnar prior-beta grain, which is perpendicular to the substrate resulting from directionally *** also could be observed that the size of alpha phase increased with increasing laser power and decreasing scanning *** properties of LRFed titanium was slightly lower than that of the wrought annealed TA15 titanium alloy, after the heat-treatment of 940℃/1h/AC, the heat-treated titanium alloy showed good tensile properties which were equivalent to that of the wrought annealed TA15 titanium alloy.

关键词： Laser rapid forming TA15 titanium alloy Microstructure Tensile properties

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Simulation on the Transient Thermal Stress Field of the Wall-Shaped Part Deposited by Laser Direct Metal Powder Deposition

Simulation on the Transient Thermal Stress Field of the Wall...

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2012 International Conference on Biomaterial and Bioengineering(ICBB 2012)

作者： Mingzhe Xi Key Laboratory of Advanced Forging & Stamping Technology and Science(Yanshan University) Ministry of Education of China

A thermo-kinetic model for the transient thermal stress field of the wall-shaped part produced using laser direct powder deposition process is developed. In case of numerical modeling, the capabilities of ANSYS parametric design language and the the ‘birth and death' element technique were employed. The distribution of the thermal stress of the wall-shaped part at different time was calculated by the model. Results show that during process, the X-direction thermal stress within top layer of the wall-shape part and that within the interior deposited layers of the wall-shape part was tensile stress and compressive stress, respectively. The deformation of the wall-shaped part and base plate was also calculated.

关键词： Finite element analysis Transient thermal stress field Laser direct powder deposition 316L stainless steel powder

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Combining gait research of the quadruped/biped reconfigurable walking chair with parallel leg mechanism

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4th International Conference on Social Robotics, ICSR 2012

作者： Hu, Xing Wang, Hongbo Sang, Lingfeng Gu, Qifang Yuan, Lin School of Mechanical and Electrical Engineering Xi'an University of Architecture and Technology Xi'an Shanxi 710055 China Ministry of Education Key Laboratory of Advanced Forging Technology and Science Hebei Province Key Laboratory of Parallel Robot and Mechatronics Systems Yanshan University Qinhuangdao Hebei 066004 China Department of Computer Wuxi City College of Vocational Technology Wuxi 214063 China

ISBN: (纸本)9783642341021

The quadruped/biped reconfigurable walking robot with parallel leg mechanism can realize not only the quadruped walking, but also the biped walking. The converting process from the quadruped to the biped includes locking the vertical revolute pair hinged with the upper platform and combining the corresponding lower platforms. Based on the previous study, the combining schemes of walking chair are researched in this paper, and then the correctness of the combining schemes is analyzed by using the position workspace of the swing leg and the body mechanism in different states which are obtained by the MATLAB software and anti-solution search method. Compared with the stability margin and the adjustment coordination of the body in the different combining schemes, the optimal combining gaits of walking chair are selected, which lays the theoretical foundation for the quadruped/biped converting control of walking chair. © 2012 Springer-Verlag.

关键词： MATLAB

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Structural Design and Simulation Optimization of New Type Telescoping Heavy Hydraulic Trailer Steering System

Structural Design and Simulation Optimization of New Type Te...

引用

The 16th International Conference on Fluid Dynamic and Mechanical & Electrical Control Engineering(FDMECE2012)

作者： Rui Guo Jingyi Zhao Yongchang Wang Decai Han Hebei Province key laboratory of heavy machinery fluid power transmission and control Ministry of education key laboratory of Advanced forging technology and science Environmental Management College of China

ISBN: (纸本)9783037855164

The length variability of telescoping heavy hydraulic trailer wills casue friction and sliding,increasing drag torque and power consumption of steering,moreover,and reducing the security and reliability of steering,so the new type follow-up steering system is designed and studied. In order to reduce the turning radius and tire wear,the adjustable steering wheel structure and double front axle mechanism are *** this basis,the theoretical analysis of the steering system is carried out,and the mathematical model is *** minimum error of actual and ideal angle is regarded as the optimization goal of pure rolling condition,and the simulation optimization and experimental research is *** results show that:the steering structural optimization is feasible, the performance is optimal on the condition that the actual and ideal angle valves of inside and outside wheels of each axis are approximately equal in turning process,and can reflect the advantage of new follow-up steering system in lowering power consumption,improving product life cycle and other areas.

关键词： telescoping heavy hydraulic trailer follow-up steering system steering error simulation optimization

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Study on the safety design of main arm mechanism in slag pot carrier

Study on the safety design of main arm mechanism in slag pot...

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The 16th International Conference on Fluid Dynamic and Mechanical & Electrical Control Engineering(FDMECE2012)

作者： Rui Guo Jingyi Zhao Decai Han Yongchang Wang Hebei Province key laboratory of heavy machinery fluid power transmission and control Ministry of education key laboratory of Advanced forging technology and science Environmental Management College of China

ISBN: (纸本)9783037855164

According to the new kind of the upper arm mechanism of the slag pot carrier,optimization design,simulation and experimental research are carried out,in which the combination of conventional design,three dimensional virtual design and experimental study are *** motion law of multi-segment arc slide way of main arm is given by means of researching the motion process of slag ladle in the main arm slide *** functional relationship among the internal parameters of the arm mechanism,and between load force and arm movement is revealed by studying kinematics of mechanism and dynamics law of the upper arm *** finite element analysis of the upper arm mechanism is carried out to get the weak links of structure strength,and then the improvement solution is *** experiments,the method correctness of optimization and design of upper arm mechanism is testified by the coincidence of the trial results and experimentation results.

关键词： slag pot carrier mechanism design Virtual technology Simulation and Optimization Experimental study

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The research on organ printing technology & equipment

The research on organ printing technology & equipment

引用

International Conference on advanced technology of Design and Manufacture (ATDM 2011)

作者： Wang Xianglei Shan Zhongde Liu Feng State Key Laboratory of Advanced Forming Technology & Equipment Advanced Manufacture Technology Center China Academy of Machinery Science & Technology Beijing 100083 China

Organ printing technology and equipment is integrated innovation of mechanical, control, materials, biological field, which is key development of advanced forming technology in the future. This paper introduce the forming technology of organ printing principle and the performance of the forming device, including motor system, material injection system, cooling system and ultraviolet disinfection components, it provides sterile and clean forming environment for printing experiment. The realization of the organ printing forming technology not only widened the area of manufacturing, but also puts forward new biology and manufacturing technology problem, it can be developed into comprehensive course of biological medicine, advanced manufacturing, tissue engineering, promote the development of biomedicine, integrate biological medicine and advanced manufacturing technology.

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Based on the knowledge base of die castion mold material selection and auxiliary design expert systerm

Based on the knowledge base of die castion mold material sel...

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International Conference on advanced technology of Design and Manufacture (ATDM 2011)

作者： Zheng Huichao Chu Zuoming Chen Dong Jin Kang Wang Xiaohui State Key Laboratory of Advanced Forming Technology and Equipment Advanced Manufacture Technology Center China Academy of Machinery Science & Technology Beijing 100083 China

Based on database technology and designing method of modular, adopting production rules to express knowledge, a model of intelligent system was created to realize high-quality, low cost, and short cycle. Use Visual Basic6.0 as a development tool and use Access2007 database technology to develop the system. Practice shows that The system can provide a reasonable design guidelines for the die casting mold designing.

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3D weaving forming technology and equipment for composites

3D weaving forming technology and equipment for composites

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International Conference on advanced technology of Design and Manufacture (ATDM 2011)

作者： Shan Zhongde Liu Feng Qiao Juanjuan Qin Shaoyan State Key Laboratory of Advanced Forming Technology and Equipment Advanced Manufacture Technology Center China Academy of Machinery Science & Technology Beijing 100083 China

Composites have been used in industry because of the advantage of lightweight and high strength. It has raised attention for its excellent performance which are widely researched in various countries in the world, such as USA and Germany, and applied in fields such as automobiles and aviation. Based on the study of international and domestic forming technology for composites, this paper gives an analysis on the features of the current typical 3D weaving forming technology, indicating the direction of the development of the 3D weaving forming technology for composites in the future.

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Study on choice of guide sleeve material based on 3D hybrid woven forming of composites

Study on choice of guide sleeve material based on 3D hybrid ...

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International Conference on advanced technology of Design and Manufacture (ATDM 2011)

作者： Qiao Juanjuan Shan Zhongde Liu Feng Chen Haibo Wu Xiaochuan Du Weixiao State Key Laboratory of Advanced Forming Technology and Equipment Advanced Manufacture Technology Center China Academy of Machinery Science & Technology Beijing 100083 China

The guide sleeve is the connection between layers during the 3D hybrid woven of large and complex component based on digital guiding master plate. Proper choice of guide sleeve materials is essential to the whole performance of composites, for both the guide sleeve and the fiber coiled on it for plane shaping are reinforcing materials. Thus not only the properties of guide sleeve should be deliberated, but also their interfacial bonding properties between resins and guide sleeve should be taken into consideration while choosing the material. After testing the interface tensile strength by universal testing machine, we use the scanning electron micro-scope (SEM) to analyze the joint surface morphology of composites before and after tensile test. And the result shows that carbon fiber-vinyl composite has excellent invasive between resins and high bonding strength. Meanwhile, because of its high specific strength, compared with aluminum alloy and stainless steel, carbon fiber-vinyl composite material is the perfect selection for guide sleeve.

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The application of sand-mold milling technology in the rapid manufacturing of automotive parts

The application of sand-mold milling technology in the rapid...

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International Conference on advanced technology of Design and Manufacture (ATDM 2011)

作者： Liu Feng Shan Zhongde Hou Mingpeng Xu Xianyi State Key Laboratory of Advanced Forming Technology and Equipment Advanced Manufacture Technology Center China Academy of Machinery Science & Technology Beijing 100083 China

As market competition becomes more intense, the development trend of manufacture is multi-variety, small batch, individuation and minor-cycle more and more obviously. Traditional casting technology with mold manufacturing cannot adapt to the active demand of short delivery date, higher precision, low cost in developing the parts of automobile engine, cover panels pattern etc. Rapid Prototyping technology and NC machining technology begin to be applied to rapid manufacturing of mold. A new rapid manufacturing technology and equipment called Sand-mold Milling was development by China Academy of Machinery Science and technology, which was successfully used to realize the trial metalwork of automobile-engine parts.

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