# Development of cost estimation of equations for forging

Abstract (Summary)

RANKIN, JOHN C., M.S. November 2005. Mechanical Engineering
Development of Cost Estimation Equations for Forging (115 pp.)
Director of Thesis: Bhavin Mehta
Following are the processes and results of the development of a more accurate
forging cost estimating equation useful for any forged part of given material and final
dimensions. A current forging cost estimating equation standard is used as a benchmark.
Error from this equation is calculated at 23 percent. Prototype equations are developed
using current methods of metal processing. Models are then tweaked or discarded as
testing progresses through varied methods of error trapping. The final equation (below)
has an error of 15 percent, a reduction of eight percent over the benchmark.
cost
process
K
=
n
(
ave
)
com
EF
AP
Where K and n are constants, A is the cross-sectional area of the forging, Pave is the
average pressure needed to produce the forging using the “slab” method of calculation, E
is an escalation factor ($102.57 in this study), and Fcom is a forging shape complexity
multiplier.
Approved:
Bhavin Mehta
Associate Professor of Mechanical Engineering
iv
Bibliographical Information:

Advisor:

School:Ohio University

School Location:USA - Ohio

Source Type:Master's Thesis

Keywords:forging equations error analysis mathematics

ISBN:

Date of Publication: