圆丝辊拔或辊挤力的理论解析

设定了圆丝辊拔或辊挤球坐标系的连续速度场，以曲线积分方法求得摩擦功率，按上界定理求得辊拔或辊挤力解析解。该解与以弦代弧得到的辊拔或辊挤力解析解进行比较，两者相当吻合。     

A Kind of Boundary Element Methods for Boundary Value Problem of Helmholtz Equation

1.Problems for electromagnetic scattering are of significant importance in many areas oftechnology.In this paper we discuss the scattering problem of electromagnetic wave incidentby using boundary element method associated with splines.The problem is modelled by aboundary value problem for the Helmholtz equation     

关于电磁散射问题的一类边界元方法

Problems for electromagnetic scattering are of significant importance in many areas of technology. In this paper we discuss the scattering problem of electromagnetic wave incident by using boundary element method associated with splines. The problem is modelled by a boundary value problem for the Helmholtz eouation     

圆钢高精度冷连轧的理论解析

利用主应力法推导出圆钢高精度冷连轧的轧制力理论计算公式，计算结果与实验结果相比较，两者吻合较好。该解析解可在工程上推广应用。