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    • Welcome to the official site of the
      North American Deep Drawing Research Group!


      The NADDRG is an organization where people working in sheet metal formability
      can meet to exchange ideas and follow work that is in progress.

      The group meets in the Spring and the Fall and provides an opportunity
      to interact with others interested in sheet metal formability.

      Meetings consist of informal off-the-record technical presentations
      (NOT sales pitches!) followed by questions and discussion.

      The next meeting is scheduled for November 19th and 20th, 2008, in Independence, Ohio
      (just south of Cleveland).

      For details, click here!

  • Scope
    • Topics presented in the informal presentations emphasize experimental work,
      analysis or simulation related to experimental work, and solutions to practical problems.
      Some idea of topics of interest include:
      Analysis of forming problems
      Die design guidelines
      Solving plant problems
      Mechanical tests to predict formability
      Relationship of product microstructure to formability
      Measuring friction and the effect of friction on formability
      New die materials
      New forming processes
      Metal property data needed for FEA
       
      These topics apply to all to all sheet metal forming processes.
      Contributions cover all metals, but the emphasis is on steel and aluminum.


  • Membership

    • Becoming a Member of NADDRG

      Applicants are accepted as provisional members, and application is encouraged.

      Provisional members are expected to make a presentation at a regular meeting within a year of being accepted as a provisional member. This presentation is a requirement to achieve full membership status. These presentations can range in topic from the work of university professors to problem solving techniques and experience by stamping plant personnel.

      Once accepted as a member, continued participation is required. Participation can be in the form of informal presentations or helping in the work of the organization.


      Please contact our Membership coordinator for more information.
  • Bylaws


    • Please click here for a copy of our Bylaws.
  • Prior Talks
    • ...Selected talk topics have included... 









































































































      A Microstructural Study on a 6000 Aluminum Sheet Metal Related to Fracture-controlled Forming Limit
      A new method for measuring continuous strain distribution in sheet bending and hemming
      A Reliability Assessment of a Sample Metal Forming Process Using Monte Carlo Method
      Advanced High Strength Steel -  What size hammer do we need?
      Advanced Material Modeling For Simulation of Hot Stamping Processes
      An accelerated method for springback compensation
      Analysis of a “Draw Bar”
      Application of Optical Techniques for Sheet Metal Forming and Material Characterization
      Artifacts and acoustics...Making Sense of Friction Curves
      Bake-Hardenability of Multiphase High Strength Sheet Steels
      Calibration of Springback for Parts Stamped From Aluminum and Advanced High Strength Steels
      Characterization of the hardening behavior for various steel grades
      Consideration on Local versus Global Formability
      Contribution of Dry Lubricant in Enhancing the Steel Formability
      Correlating friction and wear data with production stamping trials
      Deformation Induced Residual Stresses in Dual Phase Steels
      Describing Springback in Flanging and Channel Dies
      Differential Scalar Hardening: A Unique Benefit of Non-associated Flow
      Direct Measurement of Multiaxial Stress-Strain Curves in Sheet Metal
      Direct Measurement of Yield Surfaces in Sheet Metal
      Draw Bending of Laminated Steel
      Effects of Patch on Dent Resistance of Closure Steels
      Emergence of Technology Needs at Lower Tier Supplier Levels - Some Case Studies
      Energy Absorbing Steering Column Design
      Evaluation of Flow Stress Models for Clad Sheet Metal
      Evolution of Hardening of Mg Az31B
      Experimental Characteristics of Stick-slip Phenomena on Sheet Metal
      Experimental Comparisons between various Plane Strain Sheet Metal Test Methods
      Experimental Set-up for Stress Based Failure Criterion Evaluation
      Experimental study of formability in high-rate forming
      Fabrication and Characterization of Tubes for Hydroforming Applications
      First Order Springback of High Strength Steels
      First-order Springback Behavior of Dual Phase Steels
      Formability and damage in electromagnetically formed AA5754 and AA6111
      Formability of Steel Tubes in Corner Fill Hydroforming
      Forming case study of High Strength steel Automotive Part
      Forming Limit Assessment for an Anisotropic Metal Under Non-proportional Loading
      Forming Limits of DP980
      Forming Simulation of Tailor Welded Blank Using Combined Temperature and Blank Holder Force Control
      Fracture Based Forming Limit Curves
      Fracture-Controlled Forming Limit of Dual Phase Sheet Steels During Small Radius Bending And Hole Expansion
      Guidelines for Determination of Forming Limit Diagrams
      High Strain Rate and Forming Properties Effect on Crash Performance
      History of NADDRG
      Hot Forming and Die Quenching of Zn Coated Steel
      Hydroforming – From Print to Production
      IISI AHSS Guidelines
      Implementation of Stress based Forming Limit Diagrams for Tubular Hydroforming
      Improvement in Formability of Aluminum Alloys
      Improving the formability of steel tubes during Hydroforming through the use of Bending Boost and Hydroforming End-Feed
      Influence of Residual Boron on Low Carbon Steel used in Welding Applications
      Infrared Temperature and Prediction of Coefficient of Friction
      Literature review on laminated steel forming process and its modeling
      Manufacturing Issues with AHSS
      Material data needs for production stamping FEA
      Metal Deformation in Energy Absorbing Steering Columns
      Metallurgical Aspects of Some Failure Analysis Studies
      Mind Boggling Stress-Strain Curves
      Models for Material Damage
      New Analytical Solutions for "Corner" Forming Limit Diagram in Tube Hydroforming
      New developments in sheet metal forming process control
      Non-contact Surface Profilometry to Address Stamping Failures
      Nonlinear Friction Modeling in Sheet Metal Forming
      On Anvil Effect of Spherical Indentations
      Overview of NIST Metal Forming Program
      Plastic Instability in Dual Tube Hydroforming Process
      Post Stretch for Zero Springback
      Practical Limitations to the Influence of Transverse Normal Stress on Sheet Metal Formability
      Prediction of Tearing Failure in Dome Height FEA Simulations Using a Stress Based Failure Criterion
      Predictive FLD for Rate Sensitive Steels
      Preliminary Review of NanoTesting for Evaluating Die Materials
      Pressure Effect on Friction and Galling
      Recipe for dealing with forming limit assessment using an anisotropic metal
      RIK Model for better springback prediction
      Robustness of the Flat Bottom Cup Springback Test to Experimental Variations
      Shape Control Using Industrial-scale Reconfigurable Tooling
      Sharp flanging of aluminum panels using polyurethane inserts
      Shear Edge Characterization of Closure Panel Steel Products
      Sheet Metal Specifications
      Sheet Springback: Numerical Integration Error
      Sheet Springback: Prediction and Design
      Simulating Advanced High Strength Steels
      Simulation of The ASP Corner Fill Test
      Smart Machining
      Some Preliminary Tensile Data for Magnesium at Elevated Temperature
      Some Thoughts on Theoretical Prediction of Forming Limit Diagrams
      Springback Modulus for High Strength Steels
      Springback Prediction and Resolution for Automotive Stampings
      Springback Stresses in Deep Drawn Cups
      Springback vs. Material Models
      Study of Load Path Optimization for Tube Hydroforming
      Study of the Increased Formability of Aluminum Alloy Sheet Formed Using Electromagnetic Forming
      Synthesizing the Die Design
      The Bauschinger Effect
      The Effects of Drawbead Modeling on Springback
      The Impact of Forming Processes on Crash Part Properties Including Failure Predictions
      The influence of Forming Strains on Elastic Properties
      The Influence of the Steel Design in Producing Stamping Parts
      Trimming of Advanced High Strength Steel
      Trimming of aluminum and steel body panels
      Tube Hydroforming Initial Simulation Program
      Twist Compression Testing
      Volume-Measurement Technique for Obtaining Stress-Strain Curves using the Hydraulic Bulge Expansion Test
      Warm Forming of Lightweight Metals
      Yield and Loading Surfaces Under Non-proportional Loading
  • Next Meeting

    • 2008 Fall Meeting:
      November 19th and 20th, 2008, in Independence, Ohio (just south of Cleveland).

      For details, click here!




      2009 Spring Meeting:
      International Deep Drawing Research Group Conference, June 1 to 3, 2008, at Colorado School of Mines, Golden, CO
      June 1 to June 3, 2009; Click here for more information!

  • Member Companies

    • NADDRG Member Companies
      Alcan Products Corporation Ford Motor Company Ohio State University
      ALCOA General Motors Corporation Texas A & M University
      American Iron and Steel Institute Generalety ThyssenKrupp Steel NA
      Anchor Manufacturing H.L. Blachford Timken Technology Center
      ArcelorMittal Dofasco Interlaken Hydroforming TribSys
      ArcelorMittal USA ISATEC United States Steel
      Bailey Tool & Mfg. Keeler Technologies United States Steel Canada
      BS Levy Consulting McMaster University University of Colorado-Denver
      CANMET Metals & Materials Engineers University of Michigan
      Chrysler LLC National Institute of Standards and Technology University of New Hampshire
      Colorado School of Mines Northern Illinois University University of Windsor
      Creative Concepts Company Northwestern University Wayne State University
      Engineering Quality Solutions Oakland University

  • IDDRG

    • Information about the International Deep Drawing Research Group (IDDRG)
      can be found on their website:     http://www.iddrg.com


      IDDRG 2009:
      IDDRG 2009 will be held in June 1 to June 3, 2009, in Golden, Colorado, USA, hosted by the Colorado School of Mines.
      Click here for more information!
  • Contact Us

    • For additional information, please click here to email us.
Copyright © 2003-2008 by the North American Deep Drawing Research Group.
All the text, graphics, design, software, and other works are the copyrighted works of the North American Deep Drawing Research Group.
All Rights Reserved. Any redistribution or reproduction of any materials herein is strictly prohibited.