Showing 4 results for Ranjbarnodeh
A. Rezaei, E. Ranjbarnodeh, M. Iranmanesh,
Volume 1, Issue 1 (Journal OF Welding Science and Technology of Iran 2016)
Abstract
Fusion welding is widely used in heavy industries to join different parts together. But sometimes welding-induced distortions cause problems like misalignment during assembling and make costs to remove them. Thus it is imperative to predict and mitigate them to improve weldments quality and also reduce in fabrication costs. This study at first will introduce inherent deformation method for prediction of welding-induced distortion. In following a relatively large panel will be simulated by finite element software ANSYS and its distortion will be calculated. The results will be compared by experimental measurement. Afterward this investigation will present an efficient welding sequence which produce minimal distortion.
S. Ansari, E. Ranjbarnodeh, M. Iranmanesh,
Volume 2, Issue 2 (Journal OF Welding Science and Technology of Iran 2016)
Abstract
Studies on welding process of Aluminium weldments shows that post-weld residual stress and deformation are influential on structure efficiency and there are different variable which affect these stresses and deformation. In this study the effect of geometrical variables and welding sequence on residual stresses and deformation in Aluminium H321 have investigated by the finite element software Ansys. Thermo elastic-plastic model was verified by metallography experiment and measurement of post-weld deformation afterward, weld leg, penetration depth and welding sequence were optimized to minimize the distortion. It was concluded that weld-volume increase post-weld distortion and it can be minimize by choosing an appropriate weld sequence
A. Kesharvarz, E. Ranjbarnodeh, M. Fadavie-Ardestani, M. Saeed Kiasat,
Volume 3, Issue 1 (Journal OF Welding Science and Technology of Iran 2017)
Abstract
Nowdays, the prediction and prevention of fatigue failures is converted to one of the most concerns for industry owners. Since the processes of fatigue suddenly occur, it is most important and necessary to recognize the effective factors of fatigue life of structures. Mechanical and thermal multiple loading are the important factors of the fatigue failure. In order to appropriate fatigue design, analysis should be validated with experimental results. In present research, fatigue life of A36 welded steel samples obtained from test is compared by finite element results obtained from commercial ansys pakage. In this research, the effects of residual stress, reinforcement, notch and thickness of sampels on fatigue life are studied. Results of analytical simulation and experimental show good agreement. Results also shows the dominant effect of reinforcement on the fatigue life.
A. Talebi Hanzaei, P. Marashi, E. Ranjbarnodeh, A. Hamdollahzadeh,
Volume 4, Issue 1 (Journal OF Welding Science and Technology of Iran 2018)
Abstract
In this study, first,diffusible hydrogen of cellulosic electrode E8010-P1 and low hydrogen electrode E8018-G was measured by mercury displacement method according to ISO3690. Then,the effect of preheating and post-heating on the sensitivity to hydrogen inducedcold cracking in welding of 18mm API5L X70 steel with these electrodes was investigated according to ISO17642-2. The results of visual inspection, penetrant test,metallographic examination, and hardness test showed that welding with cellulosic electrode leads to cracking unless both preheating and post-heating are applied.While in the case of low hydrogen electrode, cracking occurs only if no preheating or post-heating is applied.
