摘要
在模拟铝合金压铸件型腔充型过程时 ,采用传统的固定松弛因子ω(0 <ω <2 )不能有效地减少运算中的迭代次数 ,而采用一种提高充型过程数值模拟运算速度的新算法—动态超松弛迭代算法 ,在 0 <ω <2范围内 ,运用自适应计算方法 ,根据运算的迭代次数的增减可以决定松驰因子的增大或减少 ,动态调整松弛因子可使运算中的迭代次数减少。经实际运算检验 ,运用该方法可以大幅度提高运算速度 ,运算的迭代次数减少 2 5 %。
A new algorithm-dynamic over-relaxation iteration algorithm was brought forward, which was used for increasing operational speed of numerical simulation during filling mold process. The dynamic over-relaxation iteration algorithm is aimed at reducing number of iteration. Using adaptive calculation method, the relaxation factor ω is changed according to increasing or decreasing of the number of iteration within the range from 0 to 2, thus dynamic adjustment of ω can be obtained. Practical calculation results show that the calculation iteration numbers can be reduced by 25%, and operational speed increases greatly.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2003年第5期1219-1222,共4页
The Chinese Journal of Nonferrous Metals
基金
黑龙江省自然科学基金资助项目 (F9912 )
黑龙江省教育厅科学技术研究项目 (95 5 110 8)
