Numerical analysis of laser-welded flange pipe joints in lap and fillet configurations

Abstract

This article presents a numerical analysis of laser-welded flange pipe joints. The presented results concern the welding of low carbon S235JR and stainless 316L steels using a CO2 laser in lap and fillet joint configurations. The estimation of welding parameters was achieved using Simufact Welding software and numerical simulation, where output power, feed rate, efficiency and intensity distribution (Gaussian parameter) were analysed. In accordance with the established model, a thermo-mechanical simulation was performed. The calculated joint geometries show good agreement with experiments; therefore, the obtained results were used to study selected joint properties of both joint types. Stress-strain distribution was estimated on the basis of thermomechanical analysis. Weld bead geometry obtained from numerical simulation was compared with the results from trial joints. The numerical model established for both joint configurations shows good agreement with experimental results and were assumed to be accurate. The results of the performed analysis shown some advantages of the use of this configuration of lap joints in flange pipe joints.

Ideas and Assumptions of a New Kind Helical Metal Expansion Joints

“…The obtained results may be interesting for analogous cases of laser processing [11][12][13], preparing parts for highly loaded devices in waste treatment [14,15] or producing responsible parts of military equipment [16,17]. It would be also very interesting to consider the thermomechanical analysis of the problem using the adjustment calculus with supplementary data [18,19] and non-parametric methods [20,21].…”

Concept of Laser Welding of Concentric Peripheral Lap Joint

“…The presented results may be useful for researchers concerning a laser welding or a laser treatment of a surface layer [22][23][24] and related industry activities [25][26][27][28][29].…”

Vickers Method Application for Quality Assessment the First Patterns of a Selected Product of the Automotive Industry – a Case Study

“…The obtained results and methodology should be of interest to researchers in the field of material sciences [14][15][16][17], energy [18,19], machining [20][21][22] and coating [23][24][25] but also quality engineers of the steel industry [26,27], food [28,29] and the automotive industry [30][31][32][33]. Increasing the quality of the materials produced will have a positive effect on the production of highly responsible parts and machines, where there is a risk of contamination [34], costly breakdowns [35,36] or injury [37,38].…”