FEM analysis and experimental research on complex forming

Shu-qin, XU; Yuan, Fu

doi:10.1016/s0924-0136(97)00020-4

Cited by 5 publications

(1 citation statement)

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“…In order to overcome these drawbacks, plastic material may well be a potential choice as the soft punch. Plasticine, the most widely used soft modeling material, which shows elastic-plastic flow behavior and excellent material flow ability, has been successfully used as a convenient model material to simulate plastic deformation of metals in metal forming processes for the last 40–50 years [ 12 , 13 , 14 , 15 ]. By undergoing large plastic deformation with the deforming metal sheets, plasticine can reduce the spring back deformation of metal sheets.…”

Section: Introductionmentioning

confidence: 99%

Research on the Micro Sheet Stamping Process Using Plasticine as Soft Punch

Wang

Zhang

et al. 2014

Materials

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Plasticine is widely used in the analysis of metal forming processes, due to its excellent material flow ability. In this study, plasticine is used as the soft punch to fabricate array micro-channels on metal sheet in the micro sheet stamping process. This is because plasticine can produce a large material flow after being subjected to force and through the material flow, the plasticine can cause the sheet to fill into the micro-channels of the rigid die, leading to the generation of micro-channels in the sheet. The distribution of array micro-channels was investigated as well as the influence of load forces on the sheet deformations. It was found that the depth of micro-channels increases as the load force increases. When the load force reaches a certain level, a crack can be observed. The micro sheet stamping process was also investigated by the method of numerical simulation. The obtained experimental and numerical results for the stamping process showed that they were in good agreement. Additionally, from the simulation results, it can be seen that the corner region of the micro-channel-shape work piece has a risk to crack due to the existence of maximum von Mises stress and significant thinning.

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