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Image of Hengan Ou

Hengan Ou

Associate Professor, Faculty of Engineering

Contact

  • workRoom B104, Coates Building
    University Park
    Nottingham
    NG7 2RD
    UK
  • work0115 846 7391
  • fax0115 951 3800

Expertise Summary

I obtained BEng and MSc degrees from Chongqing University, China, and PhD from the University of Strathclyde. I had worked as an academic at Queen's University Belfast and Chongqing University before I joined the Department in 2008. My main research interests are in areas of process modelling and optimisation, metal forming and material processing techniques as well as machine system design and integration. In the past 10 years, I have led a number of EPSRC, EC/FP and industrial sponsored projects in developing integrated forging optimisation systems for net-shape manufacturing of aeroengine components. I'm now interested in looking into new materials processing techniques. I'm also keen to work on new computational methods and experimental procedures in the general field of mechanical and manufacturing engineering. I have 90 publications in journals and conference proceedings and have been an EPSRC Peer College member since 2006.

Research Summary

1) Process modelling and computational tools of metal forming and materials processing.

2) Finite element method and optimisation techniques of contact problems.

3) Advanced metal forming processes including net-shape forging and incremental sheet forming for aerospace and medical applications.

4) Multi-Scale computational modelling of rough surface contact and engineering applications.

Selected Publications

  • OU, H, WANG, P, LU, B and LONG, H, 2012. Finite element modelling and optimisation of net-shape metal forming processes with uncertainties Computers & Structures. Vols 90-91, 13-27
  • B LU and H OU, 2012. Quantification of Press Elasticity in Precision Forging of 3D Complex Shapes Proceedings of the Institution of Mechanical Engineers. Part B, Journal of Engineering Manufacture. 226(3), 466-477
  • B LU and H OU, 2012. An efficient approach for trimming simulation of 3D forged components International Journal of Mechanical Sciences. 55(1), 30-41
  • J.E. MAKEM, H. OU and C.G. ARMSTRONG, 2012. A virtual inspection framework for precision manufacturing of aerofoil components Computer-Aided Design. (In Press.)
  • LU, B. AND OU, H., 2011. Stochastic finite-element modelling and optimization for net-shape forging of three-dimensional aero-engine blades Proceedings of the Institution of Mechanical Engineers. Part L, Journal of Materials-Design and Applications. 225(L2), 71-85
  • LU, B and OU, H. AND CUI, Z.S., 2011. Evolutionary Topological Optimisation for Preform Design In: THE 14TH INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING (ESAFORM 2011). 327-332
  • LU, B and OU, H. AND LONG, H., 2011. Die shape optimisation for net-shape accuracy in metal forming using direct search and localised response surface methods Structural and Multidisciplinary Optimization. 44(4), 529-545
  • LU, B and OU, H. AND ARMSTRONG, C.G., 2011. Net-Shape Forging of Aerofoil Blade based on Flash Trimming and Compensation methods In: THE 14TH INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING (ESAFORM 2011). 1677-1682
  • B LU, H OU and ZS CUI, 2011. Shape Optimisation of Preform Design for Precision Close-Die Forging Structural and Multidisciplinary Optimization. 44(6), 785-796
  • B LU, H OU, J CHEN and J CAO, 2011. An adaptive tool path generation and optimisation method for single point incremental sheet forming In: 10th Int Conf on Technology of Plasticity (ICTP2011), Aachen, Germany. 508-512
  • LU, B., OU, H. and ARMSTRONG, C.G. AND RENNIE, A., 2009. 3D Die Shape Optimisation for Net-Shape Forging of Aerofoil Blades Materials & Design. 30(7), 2490-2500
  • LU, B., OU, H. and ARMSTRONG, C.G., 2008. Quantification of Dimensional and Shape Tolerances in Hot Forging of Aerofoil Blades In: Int. Conf. on Technology of Plasticity (ICTP2008), Gyeongju, Korea, Sept, 2008,. (In Press.)
  • H. OU, H., LU, B., MAKEM, J., ARMSTRONG, C.G. and NIKOV, S. AND RENNIE, A., 2008. Development of a Virtual Die Shape Optimisation System for Net-Shape Forging of Aeroengine Components Steel Research International. 79(2), 804-811
  • YOU, L.H. and OU, H., 2008. Steady-State Creep Analysis of Thick-Walled Spherical Pressure Vessels with Varying Creep Properties ASME Transactions, Journal of Pressure Vessel Technology. 130(1), 014501-1--014501-5
  • MAKEM, J., OU, H. and ARMSTRONG, C.G., 2008. A Virtual Inspection Technique for Assessing the Dimensional Accuracy of Forged Compressor Blades Using FE Modelling and CMM Inspection International Journal of Materials Forming. 1,
  • MAKEM, J, LU, B., OU, H. ARMSTRONG, C.G, RENNIE, A. and NIKOV, S., 2008. 3D Die Shape Optimisation for Net-Shape Forging of Aeroengine Compressor Blades In: Int. Conf. on Technology of Plasticity (ICTP2008), Gyeongju, Korea, Sept, 2008,. (In Press.)
  • CG ARMSTRONG, TT ROBINSON and H OU, 2008. Recent Advances in CAD/CAE Technologies for Thin-Walled Structures Design and Analysis In: 5th Int Conf Thin-Walled Structures (ICTWS2008), Brisbane, Australia.
  • T ROBINSON, R FAIREY, C ARMSTRONG, H OU and G BUTLIN, 2008. Automated Mixed Dimensional Modelling with the Medial Object In: 17th International Meshing Roundtable. 281-298
  • LU, B., OU, H. and ARMSTRONG, C.G., 2007. A Simple Method to Evaluate Trimming Operation on Hot Forged Blade Components In: Proc. 15th ACME Annual Conf., Glasgow, April 2007.. (In Press.)
  • YOU, L.H., OU, H. and AND LI, J., 2007. Stress Analysis of functionally graded thick-walled cylindrical vessels AIAA Journal. 45(11), 2790-2798.
  • LU, B., OU, H. and ARMSTRONG, C.G., 2007. 3D Die Shape Optimisation Using Direct Compensation and Surface Optimisation In: Proc. 9th Int. Conf. on Numerical Methods in Industrial Forming Processes (NUMIFORM 2007), Porto, Portugal, June 2007. 487-492
  • LIN, T.J., OU, H., LI and R.F., 2007. A Finite Element Method for 3D Static and Dynamic Contact/Impact Analysis of Gear Drives Computer Methods in Applied Mechanics and Engineering. 196(1-2), 1716-1728
  • MAKEM, J., OU, H. and ARMSTRONG, C.G., 2007. An Approach for Shape Error Quantification in Forging Compressor Blades Using FE Modelling and CMM Inspection In: Proc. 15th ACME Annual Conf., Glasgow, April 2007..
  • OU, H., LAN, J., ARMSTRONG, C.G., PRICE, M.A., WALLØE, S.J. and WARD, M.J., 2006. Reduction in Post Forging Errors for Aerofoil Forging Using Finite Element Simulation and Optimisation Modelling and Simulation in Materials Science and Engineering. 14(2), 179-193
  • OU, H. and ARMSTRONG, C.G., 2006. The Effect of Press Elasticity in Forging of Aerofoil Sections Using Finite Element Simulation Finite Elements in Analysis and Design. 42(10), 856-867
  • OU, H., 2006. Prediction of Dimensional Errors in 3D Complex Shapes due to Press Elasticity International Journal of Advanced Manufacturing Technology. 31(1-2), 61-70
  • ROBINSON, T.T., ARMSTRONG, C.G., MCSPARRON, G., OU, H and MCKEAG, R.M., 2006. Automated Dimensional Reduction for the Finite Element Modelling of Sketch based CAD Components In: Proc. SPM 2006 - ACM Symposium on Solid and Physical Modeling, Cardiff, UK, June 2006.. 117-128
  • LIN, T.J., LI, R.F., LONG, H. and OU, H., 2006. 3D Transient Sealing Analysis of Reactor Pressure Vessel Flanges Nuclear Engineering and Design. 236(24), 2599-2607
  • ROBINSON, T.T., ARMSTRONG, C.G., LEE, K.Y. and OU, H., 2005. Automatic Mixed Dimensional Finite Element Modelling of Sketch Based CAD Components In: Proc. 13th ACME Annual Conf., Sheffield, UK, March, 2005.. 79-82
  • LI, R.F, LIN,T.J., OU, H. and GUO, X.D., 2005. Finite Element Simulation of the Dynamic Contact/Impact Behavior of Hypoid Gears VDI Berichte. 1904(I), 581-590
  • GREENE, R.M., OU, H. and ARMSTRONG, C.G., 2005. Die Shape Modification in Forging Simulation of Aerospace Components In: Proc. 13th ACME Annual Conf., Sheffield, UK, March, 2005.. 115-118
  • LIN, T.J., LI, R.F. and OU, H., 2005. 3D Transient Seal Analysis of Reactor Pressure Vessel Using Coupled Thermo-Elasto-Plastic Contact Method In: Proc. 13th ACME Annual Conf., Sheffield, UK, March, 2005.. 83-86
  • OU, H., LAN, J., ARMSTRONG, C.G. and PRICE, M.A., 2004. A FE Simulation and Optimisation Approach for Forging of Aeroengine Components Journal of Materials Processing Technology. 151(1-3), 208-216
  • OU, H., LAN, L., ARMSTRONG, C.G., PRICE, M., WALLØE, S.J. and WARD, M.J., 2004. Net-Shape Forging of Aerofoil Blades Using Finite Element Simulation and Optimisation In: Proc. 7th Esaform Conf. on Material Forming (ESAFORM 2004), Trondheim, Norway, April, 2004.. 663-666
  • MUCUNE, R.W., OU, H., ARMSTRONG, C.G. and PRICE, M.A., 2004. Modelling Friction Stir Welding with the Finite Element Method – a Comparative Study In: Proc. 5th Int. FSW Symposium, Metz, France, Sept. 2004.
  • OU, H., LAN, J., ARMSTRONG, C.G., WALLØE, S.J. and WARD, M.J., 2004. Direct Die Shape Compensation for Forging of Ni-Based Aerofoil Blades In: Proc. 8th Int. Conf. on Numerical Methods in Industrial Forming Processes (NUMIFORM 2004), Columbus, Ohio, USA, June, 2004.. 382-387
  • ROBINSON, T., OU, H. and ARMSTRONG, C.G., 2004. Study on Ring Compression Test Using Physical Modelling and FE Simulation Journal of Materials Processing Technology. 153-154, 54-59
  • KHAMASSI, A., ARMSTRONG, C.G. and OU, H., 2003. A Simplified Approach to Evaluating Weld Induced Distortions In: Proc. 11th ACME conf., Glasgow, UK, April, 2003.. 21-24
  • PRICE, M., MCCLATCHEY, G., GIBSON, A., MURPHY, A., CURRAN, R., OU, H. and ARMSTRONG, C., 2003. Design of Welded Aluminium Fuselage Panels for Improved Fatigue Performance In: Proc. Int. Conf. on Metal Fabrication and Welding Technology, Nottingham, UK, Sept, 2003.. 75-84
  • OU, H., LAN, J., PRICE, M.A. and ARMSTRONG, C.G., 2003. Development of a FE Simulation and Optimisation System for Net-Shape Forging of Aeroengine Components In: Proc. Int. Conf. on Metal Fabrication and Welding Technology, Nottingham, UK, Sept, 2003.. 141-150
  • OU, H., 2003. A Matrix Approach for Forging Error Assessment International Journal for Manufacturing Science and Production. 5, 63-66
  • MAWHINNEY, P., PRICE, M., ARMSTRONG, C., RAGHUNATHAN, S., OU, H., MURPHY, A. and CURRAN, R., 2003. Using Idealised Models to Enable Analysis Driven Design In: Proc. AIAA's 3rd Annual Aviation Technology, Integration and Operations (ATIO) Technical Forum, Denver, USA, Nov. 2003.
  • LAN, J., OU, H., ARMSTRONG, C.G. and PRICE, M.A., 2003. The Forging Simulation using Rigid-Plastic FEA In: Proc. 11th ACME conf., Glasgow, UK, April, 2003.. 205-208
  • OU, H., ARMSTRONG, C.G. and PRICE, M.A., 2003. Die Shape Optimisation in Forging of Aerofoil Sections Journal of Materials Processing Technology. 132(1-3), 21-27
  • MCKEAG, R.M., ARMSTRONG, C.G., ROBISON, D.J., PRICE,M.A., OU, H., MCCUNE, R.W. and MONAGHAN, D.J., 2002. The Medial Axis Transform - an illustrated tutorial In: Proc. 3rd Irish Workshop on Computer Graphics, Dublin, Ireland, April, 2002.. 63-73
  • OU, H. and ARMSTRONG, C.G., 2002. Hot Forging Simulation for Aerofoil Components during Cyclic Forming Conditions In: Proc. 5th Int. EASFORM Conf. on Material Forming, Krakow, Poland, April, 2002.. 399-402
  • OU, H. and ARMSTRONG, C.G., 2002. Inclusion of Press-Elasticity in Forging Simulation for Aerofoil Sections In: Proc. 7th Int. Conf. on Technology of Plasticity (ICTP 2002), Yokohama, Japan, October, 2002.. 163-168
  • ARMSTRONG, C.G., MONAGHAN, D.J., PRICE, M.A., OU, H. and LAMONT, J., 2002. Integrating CAE Concepts with CAD Geometry. In: TOPPING B.H.V. and BITTNAR, Z., eds., Engineering computational technology 75-104
  • OU, H. and ARMSTRONG, C.G., 2002. A Die Shape Compensation in Hot Forging of Titanium Aerofoil Sections Journal of Materials Processing Technology. 125-126, 347-352
  • OU, H., FERGUSON, W.H. and BALENDRA, R., 1999. Assessment of the Elastic Characteristics of an 'infinite Stiffness' Physical Modelling Press Journal of Materials Processing Technology. 87(1-3), 28-36
  • OU, H. and BALENDRA, R., 1998. Preform Design for Forging of Aerofoil Sections using FE Simulation Journal of Materials Processing Technology. 80-81, 144-148
  • OU, H. and BALENDRA, R., 1998. Die-elasticity for Precision Forging of Aerofoil Section Using Finite Element Simulation Journal of Materials Processing Technology. 76(1-3), 56-61
  • LONG, H., OU, H., QIN, D. and ZHANG, G., 1996. Parametric Modelling and Contact Finite Element Analysis of Meshing Gears China Mechanical Engineering. 7, 29-32
  • LONG, H., ZHANG, G. and OU, H., 1995. Parametric Modelling and Finite Element Analysis of Meshing Gears Chinese Journal of Mechanical Engineering. 31(5), 38-45
  • OU, H., LONG, H. and HE, C., 1995. Performance Optimisation and Finite Element Simulation of Double Helical Gears in Power Transmission of Pilger Seamless Rolling Mill Journal of Mechanical Transmission. 19(5), 39-43
  • OU, H., LI, R.F. and GONG, J.X., 1994. A Finite Element Algorithm of Three-dimensional Impact-Contact Problems Journal of Chongqing University. 17(2), 52-57 (In Press.)
  • LI, R.F. and OU, H., 1994. A Finite Element Solution to Coupled Thermo-Elastic Contact Stress and Impact Response of Meshing Gears Chinese Journal of Mechanical Engineering (English edition). 7(1), 64-68

Faculty of Engineering

The University of Nottingham
University Park
Nottingham, NG7 2RD


telephone: +44 (0) 115 951 4163
email:engineering@nottingham.ac.uk