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Professor Liu Hui Xian

Wave Motion Studies Originated in IEM Liao ZP (Institute of Engineering Mechanics, CSB) August 19 2004. Professor Liu Hui Xian. Initiating the studies in IEM Great support to the studies. Problem Statement. Near-field wave motion Numerical Simulation

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Professor Liu Hui Xian

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  1. Wave Motion Studies Originated in IEMLiao ZP(Institute of Engineering Mechanics, CSB)August 19 2004

  2. Professor Liu Hui Xian Initiating the studies in IEM Great support to the studies

  3. Problem Statement • Near-field wave motion • Numerical Simulation • Open, Complicated System of large scale Remark: Common Problem Fields in Electromagnetics

  4. Goal: High Efficiency Accuracy and Stability Results: Finite Element Decoupling Technique for Simulation of the Near-Field Wave Motion

  5. Framework of Decoupling Technique(1970s, 1980s) Decoupling • Waves passing through the boundary • Wave Motion in the interior

  6. Transmitting Boundary conditions Liao ZP, etc., Siencia Sinica, 27(10), 1063-1076, 1984; Liao ZP, etc., Soil Dyn. Earthq. Eng., 3(1), 174-183,1984 • Decoupling Simulation of Waves in the Interior of the System Lumped Mass and Consistent Mass Liao ZP ，Earthq. Eng. Eng. Vib.，4(2)，1-14，1984(in Chinese) • Framework of the decoupling technique

  7. Recent Studies (1990s - now) Theoretical basis of the boundary Plane wave assumption and Radiation conditions at infinity Liao ZP, Sciences in China, 42(2), 177-186, 2001 Stable Implementation Semi-empirical technique to enhance the stability Classification of instabilities  Causes Measures Liao ZP, etc., Acta Geophysica sinica, 45(4), 554-568, 2002

  8. Complicated Waves in the Interior The technique is generalized to include: Contactable Cracks Plasticity, Viscosity and Elasticity Constant Hysteretic Damping Liu JB, etc., Acta Mechanica Sinica, 15(1), 63-72, 1999 Liu JB, etc, Comp. Meth. Appl. Mech. Eng., 121, 187-200, 1995 123, 287-298, 1995 Li XJ, etc., Acta Seismologica Sinica, 8(3), 447-456, 1995 Liao ZP, An Introduction to Wave Motion Theories for Engineering Academic Press, Beijing ,2002 (in Chinese)

  9. Applications Professor Chen HQ Earthquake Resistance Design Of Xiao-wan arch dam(192m) I = Ⅷ,Ⅸ

  10. A sketch of F.E. modeling of Xiaowan arch dam

  11. Concluding Remarks Forward and Inverse Problems Cooperation of Different Disciplines

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