Extended Peridynamics and Parameter Optimization Study Based on Moving Least Squares Method

Based on the theory of peridynamics, least squares and moving method are proposed to fit physical information at nondiscrete points. It makes up for shortcomings peridynamic that only solves discrete nodes cannot obtain other blank areas. The extended is used one-way vibration problem rod, curve displacement a node in rod extracted with time. fitted results compared theoretical verify feasibility fitting method. At same time, parameters optimized, effects different tight weight functions influence ranges analyzed. show when function power exponential function, effect increases decrease coefficient. When cubic spline better obtained. And case ensuring result, affected area should be reduced as much possible, calculation efficiency precision can improved.