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Basic FormabilityBasic Formability

3 day course


The objective of this course is to understand the inputs into a stamping operation and how to interpret the results. The effects of parameters such as geometry, material properties, press curves, and blankholder capabilities are thoroughly discussed. It teaches the fundamentals of analyzing a part by understanding its markings and how to evaluate its severity.

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Product Designers & Engineers, Tooling Supervisors, Process, Manufacturing and Tooling Engineers, and Tool & Die Makers.


1.0 Understanding Material Properties

1.1 How a Stamping Holds its Shape
1.2 Effect of n and r-Values on Forming
1.3 Typical n, r and Yield Strength for Different Materials

2.0 Circle Grid and Thinning Strain Analysis

2.1 Use of Circle Grid and Thinning Strain Analysis
2.2 How to Apply Circle Grids
2.3 Determining and Plotting Major and Minor Strains
2.4 Concept of a Forming Limit Diagram
2.5 Determining the Position of the Forming Limit Curve for Different Materials
2.6 Interpretation of Results
2.7 How to Perform Thinning Strain Analysis
2.8 Benefits of Thinning Strain Analysis (TSA)

3.0 Overview of the Press

3.1 Press Terminology
3.2 Types of Presses
3.3 Types of Press Automation

4.0 Understanding Stamping Dies

4.1 Terminology of a Stamping Die
4.2 Types of Stamping Dies
4.3 Die/Press Combination

5.0 Understanding the Markings on a Component

5.1 Introduction
5.2 Definition of Terms
5.3 Movement of Punch and Die Impact Lines or feature Lines
5.4 Positioning of Drawbeads and Material Movement Through Them
5.5 Understanding Scrap and Offal
5.6 Die Factors that Can Effect Product Quality
5.7 Group Exercise to Identify Markings

6.0 Types of Defects

6.1 Introduction
6.2 Splitting Defects
6.3 Wrinkling Defects
6.4 Defects Due to High and Lows
6.5 Stiffness and Dent Resistance
6.6 Group Exercises to Identify Defective Areas

7.0 Measuring the Formability of Stampings

7.1 Understanding the Evaluation of Complex Panels
7.2 Formability Guidelines for Local features
7.3 Formability Guidelines for Regional Features
7.4 Global Analysis of a Panel


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