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ELASTIC WAVE MOTION IN DISCRETE GRIDS

Liao Zhenpeng Liu Jingbo (Institute of Engineering Mechanics,State Seismological Bureau)  
A concept of vibration transfer function is introduced to illuminate systematically dispersion, cut-off frequency and aliasing of wave motion in onedimensional elastic discrete grid.Reflection and transmission of elastic waves in nonuniform discrete grids are studied, and optimal discrete schemes to eliminate and reduce the error reflections from the non-uniform grid are discussed.
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