【摘要】 在爆炸载荷作用下飞板运动规律的研究是爆炸焊接中一个十分重要的问题。提出爆炸产物的侧向飞散过程可用普朗特－梅耶（Ｐｒａｎｄｔｌ－Ｍｅｙｅｒ）的绕流理论来描述，而且飞板的存在与弯曲对爆炸产物的稀疏作用也可以用这一理论来描述，即爆炸产物的真实运动状态是这两种运动的综合。进而推导出了描述飞板运动规律的近似计算方法双Ｐ－Ｍ法。通过实例计算，表明这一方法能较精确地描述飞板的运动规律。更多还原

【Abstract】 The study on the movement of plate under explosive loading is an important problem in explosive welding.In this paper,it is presented that the upper rarefication of the explosion products can be described by the Prandtl Meyers theory (P M theory),and the scattering effects which the plate puts on the explosion products can also be described by the P M theory.Then,the twin P M method is derived,which is an approximate method on describing the movement of the plate.Examples show that this method can accurately describe the movement of the plate under sliding detonation.更多还原