窄条喷丸成形的数值模拟

 在分析窄条喷丸成形的变形特点基础上,提出了通过等效变形实现数值模拟的方法。由喷丸成形基本工艺参数试验,建立了壁板等效变形力与喷丸成形基本工艺参数之间的定量关系。利用上述定量关系,采用弹性薄壳有限元法模拟给定喷丸参数下的壁板外形。给出的算例验证了算法的正确性和有效性。

NUMERICAL SIMULATION OF NARROW STRIP PEEN FORMING

The study presented herein is the numerical simulation of a narrow strip peen forming process, an effective method to form single curvature surfaces. The key problem in the numerical simulation is how to transform the given peening parameters into the equivalent nodal forces, which is solved by the equivalent deformation method proposed by the author. Since the deformation of the skin panel from its developed configuration to the given shape is not beyond its elastic limit, the deformation of the panel can be calculated by the elastic thin shell finite element method. To realize the above mentioned method, a program package has been developed. An example is given to show the validity of the proposed numerical simulation method.