An innovative procedure for the numerical identification of accurate friction and heat transfer laws for precision forging processes

The aim of the work subject to this paper is the development of an advanced FE simulation model which is to meet the specific requirements precision forging processes impose on the simulation in terms of increasing the accuracy. Existing friction and heat transfer laws which describe the intermediate layer are not appropriate regarding simulation accuracy. Hence, in this paper an innovative procedure for the development of intermediate layer laws is presented. A innovative indirect measurement device has been developed which has no influence on the intermediate layer conditions and which is suitable for meaningful measurements. Furthermore, a Numerical Identification method is presented for the determination of local intermediate layer laws. The intermediate layer laws which permit the local determination of the intermediate layer quantities are suitable for the implementation in FE-simulation models.