Premium
Design of optimal process parameters for non‐isothermal forging
Author(s) -
Cheng Huaining,
Grandhi Ramana V.,
Malas James C.
Publication year - 1994
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620370111
Subject(s) - forging , isothermal process , mechanical engineering , titanium alloy , process (computing) , process design , thermal , materials science , state (computer science) , engineering , computer science , alloy , process engineering , metallurgy , thermodynamics , algorithm , physics , process integration , operating system
This paper presents a state space model and an optimal design scheme for non‐isothermal metal forming processes. By selecting nodal velocity and temperature as the state variables, a non‐isothermal state equation with coupled deformation and thermal terms is established. Based on this state space model, a control design scheme is developed to obtain the optimal die velocity and initial die temperature which will ensure that the effective strain‐rate and temperature satisfy the design requirements. A titanium alloy engine disk forging is used to demonstrate two design examples. The results show that the proposed model and design scheme behave well for different design requirements.