scholarly journals Experimental investigations on built-up cold-formed steel beams connected by resistance spot welding

2018 ◽  
Author(s):  
Viorel Ungureanu ◽  
Ioan Both ◽  
Mircea Burca ◽  
Marius Grosan ◽  
Calin Neagu ◽  
...  
Keyword(s):  
Resistance Spot Welding ◽  
Spot Welding ◽  
Experimental Investigations ◽  
Steel Beams ◽  
Lap Joint ◽  
Shear Tests ◽  
Research Project ◽  
Resistance Spot ◽  
Steel Sheets ◽  
Cold Formed Steel

The WELLFORMED research project, ongoing at the CEMSIG Research Center of the Politehnica University of Timisoara, proposes to study a new technological solution for built-up beams made of corrugated steel sheets for the web and thin-walled cold-formed steel profiles for the flanges, connected by resistance spot welding. Within the research project, the experimental work includes tensile-shear tests on the lap joint spot-welded specimens, were different combinations of steel sheets with various thicknesses were tested and, tests on full scale beams in bending. The study intends to demonstrate the feasibility of the proposed solutions, to assess their performance and to enlarge the knowledge by using numerical simulations for the optimization of the current solution and to define the limits of the solution’s applicability.

Experimental Investigations on Spot Welded Built-Up Cold-Formed Steel Beams

2018 ◽  
Vol 1146 ◽  
pp. 142-151
Author(s):  
Viorel Ungureanu ◽  
Ioan Both ◽  
Mircea Burca ◽  
Ştefan Benzar ◽  
Thai Hoang Nguyen ◽  
...  
Keyword(s):  
Spot Welding ◽  
Steel Sheet ◽  
Experimental Program ◽  
Experimental Investigations ◽  
Steel Beams ◽  
Technological Solution ◽  
Research Project ◽  
Steel Sheets ◽  
Cold Formed Steel ◽  
Thin Walled

Within the WELLFORMED research project, ongoing at the CEMSIG Research Center of the Politehnica University of Timisoara, a new technological solution was proposed for built-up beams made of corrugated steel sheets for the web and thin-walled cold-formed steel profiles for the flanges, connected by spot welding. The research project integrates an extensive experimental program on such beams, using full scale specimens, to demonstrate the feasibility of the proposed solutions and to assess their performance, followed by numerical simulations to characterize and optimize the connecting details. The present paper presents the results of a large experimental program, on small specimens subjected to shear, consisting of two or three layers of steel sheet connected by spot welding.

Experimental Investigations on Capabilities of Resistance Spot Welding and MIG Brazing for Producing Corrugated Beams Using Galvanized Steel Sheets

2021 ◽  
Vol 1164 ◽  
pp. 47-54
Author(s):  
Bogdan Radu ◽  
Viorel Ungureanu ◽  
Ioan Both ◽  
Mircea Burcă ◽  
Ştefan Benzar ◽  
...  
Keyword(s):  
Resistance Spot Welding ◽  
Spot Welding ◽  
Materials Science ◽  
Research Work ◽  
Steel Structures ◽  
Galvanized Steel ◽  
Experimental Investigations ◽  
Steel Beams ◽  
Resistance Spot ◽  
Steel Sheets

This paper summarized the research work carried out by a team from Department of Steel Structures and Structural Mechanics, together with Department of Materials Science and Engineering, from University Politehnica Timisoara, which tried to determine the possibility to use welding for obtaining built-up cold-formed steel beams made of corrugated galvanized steel sheets (grade S350GD+Z). There were analyzed two joining processes: MIG brazing and Resistance Spot Welding with the aim to replace the self-drilling screws used until now. The results are very promising and these solutions of joining have beside economic advantages also technical and quality ones.

Experimental Researches on Using Resistance Spot Welding for Built-Up Cold-Formed Beams Made of Corrugated Galvanized Steel Sheets

2021 ◽  
Vol 1164 ◽  
pp. 3-8
Author(s):  
Bogdan Radu ◽  
Viorel Ungureanu ◽  
Ioan Both ◽  
Mircea Burcă ◽  
Ştefan Benzar ◽  
...  
Keyword(s):  
Welded Joints ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Materials Science ◽  
Steel Structures ◽  
Galvanized Steel ◽  
Steel Beams ◽  
Resistance Spot ◽  
Steel Sheets ◽  
Materials Science And Engineering

The paper presents the results of researches carried out by a joint team from Department of Steel Structures and Structural Mechanics, together with Department of Materials Science and Engineering, from University Politehnica Timisoara, focused on the possibility of creating built-up cold-formed steel beams made of corrugated galvanized steel sheets by resistance welding, which will replace the similar beams built by self-drilling screws. Resistance spot welding technologies were developed and tested, together with mechanical testing of the welded joints, which were performed in our laboratories. The results obtained and presented confirm the good quality of the welded joints and, as a result, the good capability of this technology to be used in production, to replace the old type of beams.

Numerical investigation of built-up cold-formed steel beams connected by spot welding

2019 ◽  
Author(s):  
Viorel Ungureanu ◽  
Ivan Lukačević ◽  
Ioan Both ◽  
Mircea Burca
Keyword(s):  
Spot Welding ◽  
Welding Process ◽  
Experimental Program ◽  
Steel Beams ◽  
Research Project ◽  
Steel Sheets ◽  
Corrugated Web ◽  
Cold Formed Steel ◽  
The Stability ◽  
Shear Panel

<p>Built-up cold-formed steel elements are efficient structural elements, very attractive due to material savings, but also for ease of construction. The connection between the built-up beam components can be easily obtained by screws, but the developments in the welding process also led to other solutions like spot welding. The WELLFORMED research project, conducted within the CEMSIG Research Center of the Politehnica University of Timisoara, proposes to study a new technological solution for built-up beams made of corrugated steel sheets for the web and thin-walled cold-formed steel profiles for the flanges, connected by spot welding. Within the research project, the experimental work included tensile-shear tests on the lap joint welded specimens, where different combinations of steel sheets with various thicknesses were tested and, tests on two full-scale beams in bending. The paper briefly summarizes the results of the experimental program and extends the research by numerical analyses to demonstrate the potential of this solution for standardization and industrial manufacturing. Based on the validation of the numerical model, the paper presents the influence of several parameters i.e.: (1) the initial imperfections, (2) the number and distance between spot welding on flanges, (3) the thickness of the flanges, (4) the thickness of the corrugated web and (5) the thickness of the shear panel. From the parametric study, it results that the bearing capacity of the corrugated web beams made of cold-formed steel components is highly affected by the stability of the components and less affected by the configuration and the number of spot welding.</p>

Experimental and numerical investigations on built-up cold-formed steel beams using resistance spot welding

2021 ◽  
Vol 161 ◽  
pp. 107456
Author(s):  
Viorel Ungureanu ◽  
Ioan Both ◽  
Mircea Burca ◽  
Bogdan Radu ◽  
Calin Neagu ◽  
...  
Keyword(s):  
Resistance Spot Welding ◽  
Spot Welding ◽  
Steel Beams ◽  
Numerical Investigations ◽  
Resistance Spot ◽  
Cold Formed Steel

scholarly journals Effect of Resistance Spot Welding Parameters on AA1100 Aluminum Alloy and SGACD Zinc coated Lap Joint Properties

2015 ◽  
Vol 3 (1) ◽  
pp. 153-160 ◽  
Author(s):  
Sakchai Chantasri ◽  
Pramote Poonnayom ◽  
Jesada Kaewwichit ◽  
Waraporn Roybang ◽  
Kittipong Kimapong
Keyword(s):  
Aluminum Alloy ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Welding Parameters ◽  
Lap Joint ◽  
Resistance Spot ◽  
Joint Properties ◽  
Aa1100 Aluminum Alloy
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