Modelling of Direct Extrusion Process and Open-Die Forging Process Analytically and Numerically

Harikrishna, Rangam (2017) Modelling of Direct Extrusion Process and Open-Die Forging Process Analytically and Numerically. MTech thesis.

[img]PDF (Fulltext is restricted upto 24.01.2020)
Restricted to Repository staff only



Present works aims to derive the mathematical models for direct extrusion process for different die cross-sections and open-die forging process for elliptical billet cross-section. Though, from designer and manufacturer point of view, from industry perspective in order to overcome the limitation and complication in the mathematical modelling, a numerical simulation technique has been established to exploit the possibility of commercially available FEM software. To initiate, with fundamental material properties testing such as compression and tensile tests for aluminum alloy have been simulated and validated with its experimental results. Successively, simulated direct extrusion process for optimal curved die, closed-die forging for axis-symmetry part and then validated with its experimental results. Later, derivation for mathematical models having elliptical, square and rectangular shape die for direct extrusion process and elliptical billet cross-section for open-die forging have been derived with certain assumptions. Finally, the potential of numerical simulation again has been exploited to validate the mathematical models, which have been observed to be less than 5%. The complexities involved in simulation including the detailed assumptions in mathematical modelling have been discussed in detail.

Item Type:Thesis (MTech)
Uncontrolled Keywords:Tensile and compression tests1; Direct extrusion2; open-die forging3; Aluminum alloy (AA6063, AA6061, aluminum 5154)4; Finite Element Method (FEM)5
Subjects:Engineering and Technology > Industrial Design
Divisions: Engineering and Technology > Department of Industrial Design
ID Code:8963
Deposited By:Mr. Kshirod Das
Deposited On:24 Apr 2018 15:42
Last Modified:24 Apr 2018 15:42
Supervisor(s):Jena, Dibya Prakash

Repository Staff Only: item control page