通过对分层实体制造 (LOM )中废料与制件之间可剥离性的研究 ,提出一种新的变网格划分算法 ,它根据实体层面轮廓几何特征及层间轮廓差异程度 ,使用点网模型来描述实体截面废料可剥离性的离散场 ,由此确定最终的变网格划分 ,在制件薄壁、凹洞、z方向突变层等位置附近的废料部分依据实体形状划分了多级变网格 ,从而在满足废料可剥离性的前提下使用尽可能少的网格 ,提高加工效率 Based on the research on the peelability between waste material and workpiece in LOM, a new algorithm for variable meshing is proposed, which is based on the geometric features of the physical layer and the differences between the layers, Model to describe the discrete field of solid section scrap peelability, thereby determining the final mesh change. The waste part near the position of the thin wall, the cavity, the z-direction mutation layer, etc. is divided into a plurality of levels according to the physical shape Mesh to use as few grids as possible while meeting scrap peelability to improve process efficiency