etable,ux,u,x define element tablbe of x displacement
*dim,y_us,,nnum,9 define an array y_us
*vread,y_us(1,1),yus,txt, ,jik,9,nnum,1 read data from file yus.txt and store them in array y_us
(3f15.5,6f15.1) reading data format
*get,x_us(i,1),elem,i,etab,ux get x displacement of element i,and store it in x_us(i,1),