摘要
首先对冲头压入问题进行了矢量分析，建立了速度矢量关系式，证明其散度为零。后经参量积分，广义积分，曲线积分按上界定理得到应力状态系数ｎ＿σ＝２．５７。
ased upon the vector analysis on pressing in of a punch the relationship between volocity and vector has been set up and the divergence verified to be area. The coefficiency of the stress condition derived according to the upper bound theorem is determined to be n_δ=2.57 by way of the parameter integral,improper integral and curved integral.
出处
《钢铁研究》
CAS
1994年第5期10-14,共5页
Research on Iron and Steel
关键词
冲头压入
半无限体
矢量分析
vector analysis parameter integral improper integral divergence upper borned-theorem
