对梁振动方程提出了一族多参数的高精度差分格式,在一定的参数选取下,格式的精度可大大提高,且是无条件稳定的。数值实验表明,格式是有效的。
A family of three-layer implicit schemes of high accuracy with three parameters for solving beam vibration equations are constructed. These schemes are proved to be absolutely stable for some choice of the parameters. Numerical examples show that the schemes are effective.