摘要
利用不同节点处空间导数的线性组合等于函数值线性组合,或者利用方程自身,得到了梁振动方程的3个模板小、精度高的高阶紧致差分格式,通过分析得到它们都是无条件稳定的.最后借助数值算例验证了理论分析的正确性,格式具有非常高的精度.
Three compact difference schemes with small stencil,high-order for the rod equation are proposed. These scheme are based on the idea that the combination of spatial derivative at different nodes equaling to the combination of functions or the original equation itself. These schemes are unconditionally stable by theoretical analysis and numerical experiments. They are of high accuracy.
出处
《江西师范大学学报(自然科学版)》
CAS
北大核心
2015年第4期351-354,共4页
Journal of Jiangxi Normal University(Natural Science Edition)
基金
国家自然科学基金(11301234
11211171)
江西省自然科学基金(20142BCB23009
20151BAB201012)资助项目
关键词
杆振动方程
高阶紧致差分格式
节点模板
rod equation
high-order compact difference scheme
node stencil