Results 31 to 40 of about 6,030 (167)

Three dimensional multi-pass repair weld simulations [PDF]

International Journal of Pressure Vessels and Piping, 2005
Full 3-dimensional (3-D) simulation of multi-pass weld repairs is now feasible and practical given the development of improved analysis tools and significantly greater computer power. This paper presents residual stress results from 3-D finite element (FE) analyses simulating a long (arc length of 62°) and a short (arc length of 20°) repair to a girth ...
Elcoate, C. D., Dennis, R. J., Bouchard, P. J., Smith, M. C.   +3 more
openaire   +2 more sources

Application of welding simulation to block joints in shipbuilding and assessment of welding-induced residual stresses and distortions

International Journal of Naval Architecture and Ocean Engineering, 2014
During ship design, welding-induced distortions are roughly estimated as a function of the size of the component as well as the welding process and residual stresses are assumed to be locally in the range of the yield stress.
Wolfgang Fricke, Sonja Zacke
doaj   +3 more sources

Influence of welding torch nozzle structures on shielding gas flow field

You-qi chuyun
[Objective] This paper seeks to address shortcomings in the conventional structural design of welding torch nozzles, such as prolonged development cycles, high costs, and uncertainty regarding the efficacy of shielding gas fow field protection. [Methods]
LIANG Mingming, LIU Xiaowen, HOU Hao, CHEN Jiaming, NIU Lianshan, JIANG Yanpeng   +5 more
doaj   +1 more source

Effect of Pre-Heating and Post-Heating on Electron Beam Welding of Reduced Activation Ferrite/Martensite Steel

Journal of Nuclear Engineering, 2021
Reduced activation ferritic/martensitic (RAFM) steels are considered the main candidate material for the water-cooled ceramic breeder (WCCB) in a fusion reactor.
Yong Zhang, Jiefeng Wu, Zhihong Liu, Songlin Liu, Mingzhun Lei, Muhammad Atif, Zhenfei Liu, Jianguo Ma   +7 more
doaj   +1 more source

Comparison of Numerical Simulation with Experimental Measurement of Temperature Field and Welding Deformation in Different Welding Sequences of Welding T-Joint

Medžiagotyra
The estimation of temperature field and welding deformation plays an important role in welding technology. The accuracy of the numerical simulation will reduce the cost of experimental measurement.
Manh Khang BUI, Pham Hai Duong TRAN, Van Hong Phuc NGUYEN, Tran Vy Thao PHAN, Kha Quoc LE, Minh Tuan PHAM, Tri Cong PHUNG   +6 more
doaj   +1 more source

Preventing Crack in an Aluminum Alloy Complex Structure during Welding Process Based on Numerical Simulation Technology

Crystals, 2022
Aluminum alloy structures are widely used for weight reduction in aviation, shipbuilding, rail vehicles and automotive industries. Fusion welding technology is one of the most important joining methods for lightweight structure assembly due to its ...
Yuelai Zhang, Wenze Luo, Jiongmeng Zeng, Xixian Li, Long Hu, Dean Deng   +5 more
doaj   +1 more source

Portable VR Welding Simulator

Applied Sciences
In many industries, there is a continuous high demand for skilled welders. Practical training in welding is cost- and time-intensive. To reduce this problem, VR welding simulators have been developed in recent years. They vary in terms of portability, hardware and software components, and functionalities.
Dariusz Michalak, Magdalena Rozmus, Jarosław Tokarczyk, Kamil Szewerda   +3 more
openaire   +2 more sources

Simulation and experimental study of 3 pass butt joint welding process with heat source model and user subroutine to predict temperature distribution and hardness

Case Studies in Thermal Engineering
This fundamental research delineates new developments in cooling rate subroutines and heat source models in GMAW multi-pass welding simulations, the outcomes are then compared with the experimental result.
Charles SP. Manurung, Himsar Ambarita, Yupiter HP. Manurung, M. Sabri, Keval P. Pradjadhiana, Noridzwan Nordin, Marcel Graf, Andre Haelsig, Wando Simanullang   +8 more
doaj   +1 more source

The effects of welding process parameters on properties of welded joint for enhancing welding structural integrity using simulation and experimental methods

Journal of Materials Research and Technology
Underwater hyperbaric dry welding, as a superior underwater welding method, is commonly applied in shipwreck salvage and subsea pipeline maintenance. Due to the use of an automatic welding arm for repairing the welding area, the preset and selection of ...
Kang Zhang, Zhengjie Yang
doaj   +1 more source

Simulation analysis of X80 pipeline steel welding

Metalurgija, 2023
In order to improve the quality of welded joints and increase the service life of pipelines, ABAQUS finite element software was used to simulate the temperature field of 18,4 mm thick X80 pipeline steel in multi-layer and multi pass welding.
M. M. Li, H. C. Ji, Q. S. Lin, C. D. Wu, S. Cai   +4 more
doaj