A. PROJECT OVERVIEW

This project is supported by a grant of the Romanian National Authority for Scientific Research and Innovation, CNCS/CCCDI - UEFISCDI, project number PN-III-P2-2.1-57PED-2017, within PNCDI III.

uefiscdi

Project Director

Prof. dr. ing. Ungureanu Viorel

Dept. of Steel Structures and Structural Mechanics

Ioan Curea 1, 300224 Timisoara, Romania

Phone: +40 256 403 927

Mail: viorel.ungureanu@upt.ro

Project period: 03.01.2017 – 02.07.2018

Abstract

The main aim of the project is to test and validate a NEW technological solution for built-up cold-formed steel beams, with corrugated sheet webs and built-up cold-formed steel flanges. The connecting technologies, such as modern welding, i.e. Spot welding and Cold Metal Transfer welding will be examined. A large experimental program, extended by numerical simulations, on connecting details and full scale beams will be conducted to optimise the fastening technology and relevant details, as well as on the purpose to demonstrate and evaluate the performances of proposed solutions. The proposed technical solution has a great potential for mass production and, due to its conceptual and technological novelty, offers the opportunity to obtain a patent.

Objectives

1. Experimental and numerical investigation and validation of a now technological solution, composed of corrugated sheet web and thin walled  cold-formed flanges, joined together with point welding and/or CMT;

2. Investigation and validation of the solution with a parametric study on numerical models using finite element software ABAQUS;

3. Extension of design methods from EN 1993-1-5, Annex D for this now type of beam, corrugated sheet web and thin walled cold-formed flanges, joined together with point welding, and to complement de provisions from EN 1993-1-3.

B. RESEARCH TEAM

Project director: Prof. dr. ing. Daniel-Viorel UNGUREANU CS1
Members: Prof. dr. ing. Dan DUBINĂ CS1
Conf. dr. ing. Mircea GEORGESCU CS2
Conf. dr. ing. Bogdan RADU CS2
S.L. dr. ing. Mircea BURCĂ CS3
S.L. dr. ing. Daniel ŢUNEA CS3
As. dr. ing. Călin NEAGU CS3
S.L. dr. ing. Ioan BOTH CS3
Drd. Ștefan BENZAR PHD.
Drd. Marius GOȘAN PHD.
Ing. Ovidiu ABRUDAN Lab engineer
Miloico UNG Technician

C. PROJECT PHASES

No. Activities State
1 Design of testing program
  • Design of reference specimens
  • Task 1-2: Design and fabrication of experimental program
  
2 Tests of welded connections and optimisation of fastening technology
  • Tests on welded connections
  • Tests on fabrication materials
  
3 Tests on full scale CWB beams
  • Tests on welded beams
  • Interpretation of results
  
4 Numerical testing of beams and parametric investigations
  • Calibration of numerical models by experimental tests. Optimization of technical solutions
  • Design and numerical analysis of specimens with larger spans
  • Evaluation and interpretation of results in terms of technical-economic performances
  
5 Exploitation and dissemination of results
  • Design and fabrication recommendations
  • Dissemination
  

D. PUBLICATIONS

Conference articles:

Ungureanu V., Both I., Burcă M., Benzar S., Nguyen T. H., Neagu C. and Dubină D.: Experimental Investigations on Spot Welded Built-Up Cold-Formed Steel Beams, The 12th International Conference Structural Integrity of Welded Structures, 9-10 November 2017, Timisoara, Romania.

Ungureanu V., and Benzar S.: Experimental Investigation on Resistance Spot Welding of Built-up Cold-formed Steel Corrugated Web Beams, Coordinating Engineering for Sustainability and Resilience, 3-8 May 2017, Amman, Jordan.

Ungureanu V., Both I., Burcă M., Nguyen T. H., Neagu C. and Dubină D.: Grinzi compuse realizate din profile formate la rece și inimă din tablă cutată, asamblate cu suduri în puncte, The 15th National Conference on Steel Structures with International Participation, 16-17 November, Iasi, Romania.

Presentations:

Ungureanu V. and Dubină D. Experimental investigations on built-up cold-formed steel corrugated web beams assembled with welding. ECCS TC7 – TWG 7.5, June 29th -30th, 2017, Helsinki (Finland).

E. LINKS

UEFISCDI — Executive Agency for Higher Education, Research, Development and Innovation Funding

ESF — European science foundation

ECCS — European Convention for Constructional Steelwork