LOGIN TO YOUR ACCOUNT

Username
Password
Remember Me
Or use your Academic/Social account:

CREATE AN ACCOUNT

Or use your Academic/Social account:

Congratulations!

You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.

Important!

Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message

CREATE AN ACCOUNT

Name:
Username:
Password:
Verify Password:
E-mail:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Publisher: Elsievier
Languages: English
Types: Article
Subjects: TA0349
The dimpling process is a novel cold-roll forming process that involves dimpling of a rolled flat strip prior to the roll forming operation. This is a process undertaken to enhance the material properties and subsequent products’ structural performance while maintaining a minimum strip thickness. In order to understand the complex and interrelated nonlinear changes in contact, geometry and material properties that occur in the process, it is necessary to accurately simulate the process and validate through physical tests. In this paper, 3D non-linear finite element analysis was employed to simulate the dimpling process and mechanical testing of the subsequent dimpled sheets, in which the dimple geometry and material properties data were directly transferred from the dimpling process. Physical measurements, tensile and bending tests on dimpled sheet steel were conducted to evaluate the simulation results. Simulation of the dimpling process identified the amount of non-uniform plastic strain introduced and the manner in which this was distributed through the sheet. The plastic strain resulted in strain hardening which could correlate to the increase in the strength of the dimpled steel when compared to plain steel originating from the same coil material. A parametric study revealed that the amount of plastic strain depends upon on the process parameters such as friction and overlapping gap between the two forming rolls. The results derived from simulations of the tensile and bending tests were in good agreement with the experimental ones. The validation indicates that the finite element analysis was able to successfully simulate the dimpling process and mechanical properties of the subsequent dimpled steel products.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • [1] Kwon YB, Hancock GJ. Tests of cold-formed channels with local and distortional buckling. Journal of Structural Engineering 1992; 118: 17861803.
    • [2] Lecce M, Rasmussen KJR. Distortional buckling of cold-formed stainless steel sections: experimental investigation. Journal of Structural Engineering 2006; 132: 497504.
    • [3] Nguyen VB, Wang CJ, Mynors DJ, English MA, Castellucci MA. Mechanical properties and structural behaviour of cold-rolled formed dimpled steel. Steel Research International 2011; Special Issue: 10721077.
    • [4] Collins J, Castellucci MA, Pillinger I, Hartley P. The influence of tool design on the development of localised regions of plastic deformation in sheet metal formed products to improve structural performance. In: Proceeding of the 10th International Conference on Metal Forming. 2004, paper no. 68.
    • [5] Letter of conformity BTC 1232LC: Estimating the recommended maximum heights of British Gypsum partitions and linings incorporating various Gypframe metal studs and Gyproc plasterboards. Fire Acoustics Structures, The Building Test Centre, British Gypsum Ltd., 2007.
  • No related research data.
  • No similar publications.

Share - Bookmark

Cite this article