All academic degrees obtained and education Ph.D., March 1995~September 1998 Harbin Institute of Technology, Harbin, China Materials processing engineering, Materials Science and Technology Dissertation: Hydrodynamic deep drawing process and numerical simulation of its forming M.Sc., September 1992~February 1995 Inner Mongolia Polytechnic Institute Solid mechanics Thesis: The most economical cavity numbers and optimization of the runner system in plastic injection B.Sc., September 1988~July 1992 Harbin Institute of Technology, Harbin, China Metal forming (materials engineering), Materials Science and Technology Thesis: Optimization of furnace structure based on charcoal burning theory in metal forming Experience of scientific research: December 2004~Now Professor School of Mechanical Engineering and Automation Beijing University of Aeronautics and Astronautics Beijing, China
November 2001~November 2004 Assistant Professor and Associate Professor Department of Production Aalborg University, Denmark June 2001~Octorber 2001 Associate Professor School of Materials and Engineering Harbin Institute of Technology, Harbin, China October 1998~ May 2001 Lecturer, post-doctoral researcher School of Applied Mechanics Harbin Institute of Technology, Harbin, China March 1995~September 1998 Ph.D. candidate, teaching assistant School of Materials and Technology Harbin Institute of Technology, Harbin, China March 1994~February 1995 Postgraduate student, research assistant Changchun Sammitr Die Ltd., Co., Changchun, China Mainly research on plastics mold and process CAD/CAM/CAE and the characteristic of plastics and one program based on the IDEAS software was developed. March 1993~February 1994 Postgraduate student, research assistant Changchun Sammitr Die Ltd., Co., Changchun, China Mainly research on stamping and forging die CAD/CAM and the technology of CIMS, and one software for CAD/CAM of stamping and forging die was developed. February 1992~July 1992 Undergraduate student Harbin Institute of Technology, Harbin, China Mainly research on high-efficiency, energy-saving and smokeless forging furnace and the burning features of coal. Research Fields: My research mainly focuses on the advanced forming technologies and can be divided into the followed fields: 1. Hydroforming including the tube hydroforming and sheet hydroforming, Warm/hot hydrforming Main research contents: Process optimization faced to the production line; Numerical simulation of the forming process; Process experiment; Equipment research for the key parameters breakthrough; Dynamic simulation for the whole system; Fracture criteria and forming limitation; The part quality control research; The high pressure technologies research; Materials properties research and inverse modeling, and many good results have been obtained and the cooperated industries think highly of these research results. Basic experimental units in Beihang University: l Tube hydroforming machine: the maximum internal pressure is 250MPa, and the side pushing force is 1200kN; l Sheet hydroforming machine: 8000kN/150MPa, double action press; l Hot/warm media forming machine: 1000oC, 100MPa for the internal pressure. l Uni-axial test machine. l Hydraulic bulging test machine. l Universal sheet forming test machine. 2. Forming of hard-formability materials including titanium alloys, high-temperature alloys, aluminum alloys and magnesium alloys. Main research contents: Optimization of process parameters; Inverse modeling of the materials property parameters; Numerical simulation by using the innovative unified constitutive equations; Basic experimental research for the key process parameters by using the sensitive analysis and orthogonal experimental design, the internal structure controlling research, knowledge base and intelligent system, the effect of the temperature variation on the final results and many good results have obtained and the cooperated industries think highly of these research results. The temperature variation system during isothermal forging has been finished firstly at this team and some good results such as the internal structure variation, crystal grain variation, friction variation and the contacting boundary condition can be investigated in details. One unified forming rules can be concluded for the sheet hot forming and forging, which will be the frontier of the hot forming research. Basic experimental units in Beihang University: l Uni-axial test machine at elevated temperature: the maximum temperature can reach 1000oC; l Universal test machine at elevated temperature: the maximum temperature can reach 900oC, the workpiece’s dimension can reach Φ100×100mm and many sensors and monitors have been used. l Double-direction tension testing machine: the maximum temperature can reach 1000oC in the furnace and the maximum workpiece can reachΦ600×200mm, main cylinder is 6300kN and the blank holding force is 2500kN, and many sensors and monitors have been used. l Experimental unit for the friction coefficient; 3. High temperature-pressure forming technology (HTPF) including Isostatic pressing technologies Main research contents: The forming mechanism of the forged part and casted parts by using the HIP; Process optimization for the temperature, pressure and the pre-forming passes; Densification kinetics simulation based on the proposed constitutive equation; Modelling technology in the numerical simulation; Friction behavior and contacting theory during forming process. HTPF of high efficiency exchanger with long tunnel; Quality prediction and controlling research for the large-scale casted part and the P/M parts; Expert system for the large-scale HIP/CIP machine; Defect diagnose system and intelligent system. Basic experimental units in Beihang University: l HIP machine: 2000oC, 200MPa; l CIP machine: 900MPa for the internal pressure; l Ultrahigh pressure research platform: 1000MPa for the hydraulic system and 300MPa for the pneumatic system; l Chemical constitution analysis machine; l Metallograph analysis, Transmission electron microscope etc. 4. Digital manufacturing and modeling Main research contents: Information system faced to the large-scale machine; Aircraft assembling system and the key technologies; Modeling and methodology; Expert system and intelligent system for forming and assembling and many good results have been obtained and transferred to the industries successfully. By using this expert system, the 540MN CIP 920MN CIP machine and 360MN HIP machine have been finished. Basic research units in Beihang University: l Software: LS-DYNA3D, ANSYS, Msc.Marc, Abaqus, Pam-Stamp, Sysweld, Adams and Easy5, Catia, UG etc. 5. Fibre Meal Laminates Fabrication and Forming Technologies Main research contents: Fabrication of glare sheet, design method for the aircraft components, cold/warm hydro-mechanical deep drawing for FMLs. 6. Damage, Fracture and Solid Mechanics Cooperated with National Thousand Talents Program person. InternationalCollaboration: Has created the collaboration agreement with Birmingham University, Imperial College of UK, TECOS in Slovenia, Institute for Problems in Mechanics of Russian Academy of Sciences in Russia, Aalborg University in Denmark, ENSMM in France, Strathclyde University in UK. And some project have been applied successfully together as the follows: 1, TECOS in Slovenia for the “Hydroforming technology faced to the small volume and versatile production in the aircraft manufacturing field”; 2, Grundfos in Denmark for the “Precise tube making and ironing and hydroforming processes”; 3, Institute for Problems in Mechanics,Russian Academy of Sciences in Russia for the “Hot-medium pressure forming theory research and equipment development for hard-formability light alloys”; Research Group and Independent thinking, leadership qualities, and capacity to transfer knowledge:
Research team mainly consists of not only the members in Beihang University (university) but also the members from the other institutions and industries and one quite broad tightly and long term cooperation team has been created. The main strategic cooperation partners are mainly including: Beihang University, Tianjin Tianduan Aviation Science and Technology Co.Ltd., Beijing Aircraft Manufacturing Engineering Institute, Guangdong Kangsida Machinery Manufacturing Company, Shenyang Aircraft Manufacturing Company, Chuanxi Machinery and Process Research Company and Tianjin Tianduan Hydraulic Press Co.Ltd. In my team, there are mainly 3 professors, 2 associated professors, 2 chief engineers so that we can realize the research results and transfer our knowledge from the university to the practice quickly to occupy the market. As the leader of this inter-institution big team, the organization has been done successfully and it can be found that this idea is quite useful, effective and efficient. The main members are: Besides the above research fields, some other quite interesting research fields are been forming depending on the practical need of the industries. The main ideas for the research of our team will be integrated by the four main points of theoretical analysis, process, equipment and material science, so that for every project some systematic and good results can be obtained. |