Title

Theoretical Formability. Volume I. Development

Description

The "cut-and-try" method of determining sheet metal formability has long been the standard practice in the aircraft industry. This two-volume report presents methods of determining formability analytically for the twelve most common processes of forming sheet metal. This method is based on utilization of a material's mechanical properties to predict formability.

The first volume on development gives the procedure used to arrive at the objective of predicting formability. First, basic limit equations are developed relating geometry of the parts to the material properties. These equations are used to determine the shape of the limit graphs and to give indices relating formability to the material. Then, experimental parts are formed to position the theoretically shaped curves with the aid of the formability indices.

The second volume on application is presented in handbook form giving design and manufacturing information for nineteen materials in the program. These materials covered some of the most currently used alloys: (1) magnesium, (2) aluminum, (3) titanium, (4) stainless steel, (5) tool steel, (6) nickel and cobalt base and (7) refractory metals. Graphs, equations, and design tables are presented for each process, statistically proven with experimental work comprising a total of approximately twenty-one-thousand formed parts.

Date

1961

Index Abstract

Contrails and DTIC

Photo Quality

Incomplete

Report Number

ASD TR 61-191 (I)

Creator

Wood, W. W.

Goforth, R. E.

Ford, R. A.

Corporate Author

Vought Aeronautics

Laboratory

Directorate of Materials and Processes

Extent

381

Identifier

ADA286700

Access Rights

OTS

Distribution Classification

1

DTIC Record Exists

Yes

Distribution Change Authority Correspondence

None

Abstract

The "cut-and-try" method of determining sheet metal formability has long been the standard practice in the aircraft industry. This two-volume report presents methods of determining formability analytically for the twelve most common processes of forming sheet metal. This method is based on utilization of a material's mechanical properties to predict formability.

The first volume on development gives the procedure used to arrive at the objective of predicting formability. First, basic limit equations are developed relating geometry of the parts to the material properties. These equations are used to determine the shape of the limit graphs and to give indices relating formability to the material. Then, experimental parts are formed to position the theoretically shaped curves with the aid of the formability indices.

The second volume on application is presented in handbook form giving design and manufacturing information for nineteen materials in the program. These materials covered some of the most currently used alloys: (1) magnesium, (2) aluminum, (3) titanium, (4) stainless steel, (5) tool steel, (6) nickel and cobalt base and (7) refractory metals. Graphs, equations, and design tables are presented for each process, statistically proven with experimental work comprising a total of approximately twenty-one-thousand formed parts.

Report Availability

Full text available

Contract

AF 33(616)-6951

DoD Project

7381

Distribution Conflict

No

Date Issued

1961-08

Provenance

IIT

Type

report

Subject

Sheet Metal

Material Forming

Mechanical Properties

Aircraft Industry

Graphs

Shape

Spinning (Industrial Processes)

Stretch Forming

Calendering (Sheet Forming)

Metal Forming Brakes

Production Control

Standards

Geometry

Utilization

Rolling (Metallurgy)

Drawing (Forming)

Publisher

Wright-Patterson Air Force Base, OH : Aeronautical Systems Division, Air Force Systems Command, United States Air Force

Format

1 online resource

Date Modified

Scanned by request 2023-12-07 submitted by University of Wichita (University - Domestic)