空化水射流微成形工艺的数值模拟研究

Numerical Simulation of Cavitation Water Jet Microforming Process

提出一种空化水射流冲击金属钛箔微成形的新工艺,该工艺利用空化水射流中空泡溃灭产生的高压冲击载荷,实现金属箔材的微成形。采用ANSYS/LS-DYNA数值模拟方法,以100μm厚的TA2钛箔作为微成形研究对象,对空化水射流冲击微成形性能进行研究。通过模型建立、定义材料及属性、定义单元类型及接触、划分网格、边界条件及力的加载等技术处理,对金属钛箔的成形形貌、成形件中心点运动等进行数值模拟,为空化水射流冲击微成形机制和进一步试验研究提供依据。

A new process of microforming metal foil by cavitation water jet impact was presented, the high pressure impact load generated by cavitation water jet bubble collapse was used to realize the microforming of metal foil. Using ANSYS/LS-DYNA numerical simulation method, TA2 titanium foil with a thickness of 100 μm was taken as the research object to study the microforming performance of cavitation water jet impact.By establishing model, defining material and properties, defining element type and contact, dividing mesh, boundary conditions and loading of force, numerical simulation was carried out on the forming morphology of titanium foil and the movement of the center point of the forming part, which provided a basis for further experimental research on the micro-forming mechanism of cavitation water jet impact.