| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
Process simulation by FEM analysis has become precise enough and is used commonly in metal forming factories. But the friction data used in the simulation is not as accurate as the simulating method and the material data. Thus, establishment of accurate friction law is desired in designing the processes which are affected significantly by the frictional condition, such as plate forging. The study leader has proposed a friction law under dry condition. The main feature of this friction law is Coulomb friction up to a critical pressure, and a constant frictional stress for higher pressures. This friction law can be determined by measuring the friction coefficient μ at any average pressure lower than the critical pressure, and can be included in the FEM codes easily.
In this study, the proposed friction law is extended to be applied to general lubrication conditions of cold metal forming processes.
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