【摘要】 对平冲头压入半无限体问题建立了流函数速度场,证明该场散度为零,旋度不为零,为管形场。采用上界定理对该速度场积分结果与滑移线结果一致,流线为一族曲线滑移线。更多还原

【Abstract】 A velocity field with stream function is first established for the problem of indentation of semi-infinite medium by a flat punch. The divergence of the field is proved to be zero and the vorticity be not zero. Therefore , it is a solenoidal vector field. With upper-bound theorem and integrating, the result of the indentation force is the same as that by slip line solution. It has been shown that the atream line is a family of curve slip lines.更多还原