scholarly journals Combined experimental–numerical study on residual stresses induced by a single impact as elementary process of mechanical peening

Strain ◽  
2020 ◽  
Vol 56 (4) ◽  
Author(s):  
Paul Sandmann ◽  
Marc‐André Nielsen ◽  
Sören Keller ◽  
Emad Maawad ◽  
Peter Staron ◽  
...  
Keyword(s):  
Residual Stresses ◽  
Numerical Study ◽  
Elementary Process ◽  
Single Impact

A Numerical Study on the Redistribution of Residual Stress After Machining

2017 ◽  
Author(s):  
Kunyang Lin ◽  
Wenhu Wang ◽  
Ruisong Jiang ◽  
Yifeng Xiong
Keyword(s):  
Residual Stress ◽  
Stress Field ◽  
Residual Stresses ◽  
Numerical Study ◽  
Cutting Speed ◽  
Machining Process ◽  
Stress Profile ◽  
Residual Stress Field ◽  
Machining Processes ◽  
Residual Stress Profile

Machining induced residual stresses have an important effect on the surface integrity. Effects of various factors on the distribution of residual stress profiles induced by different machining processes have been investigated by many researchers. However, the initial residual, as one of the important factor that affect the residual stress profile, is always been ignored. In this paper, the residual stress field induced by the quenching process is simulated by the FEM software as the initial condition. Then the initial residual stress field is used to study the residual stress redistribution after the machining process. The influence of initial stress on the stress formation is carried out illustrating with the mechanical and thermal loads during machining processes. The effects of cutting speed on the distribution of residual stress profile are also discussed. These results are helpful to understand how initial residual stresses are redistributed during machining better. Furthermore, the results in the numerical study can be used to explain the machining distortion problem caused by residual stress in the further work.

scholarly journals Influence of Welding Defects on Residual Stresses: Numerical Study

2014 ◽  
Vol 996 ◽  
pp. 506-511
Author(s):  
Intissar Frih ◽  
Pierre Antoine Adragna ◽  
Guillaume Montay
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Residual Stresses ◽  
Numerical Study ◽  
Stress Gradient ◽  
Residual Stress Distribution ◽  
Welded Structure ◽  
Critical Defect ◽  
Welding Defects ◽  
Residual Stress Gradient

This paper presents a study on the application of the finite element methods to predict the influence of a defect on the residual stress distribution in a T-welded structure. A defect is introduced in a numerical model firstly without residual stress to see its impact (size and position) on the stress distribution. Secondly the most critical defect (determined previously) is simulated with a residual stress gradient. The obtained results are useful for computation stress concentration factor due to weld residual stresses.

Experimental and Numerical Study of Residual Stresses and Strains in an Electron-Beam-Welded Joint

1989 ◽  
pp. 491-496 ◽  
Author(s):  
A. Carmet ◽  
S. Debiez ◽  
J. Devaux ◽  
D. Pont ◽  
J. B. Leblond
Keyword(s):  
Electron Beam ◽  
Residual Stresses ◽  
Welded Joint ◽  
Numerical Study ◽  
Residual Stresses And Strains

scholarly journals NUMERICAL STUDY OF PLASTICITY EFFECTS IN UNIFORM RESIDUAL STRESSES MEASUREMENT BY RING-CORE TECHNIQUE

2017 ◽  
Vol 11 (2) ◽  
pp. 17-26 ◽  
Author(s):  
Hossein Heidary ◽  
Mohsen Sadri ◽  
Navid Zarif Karimi ◽  
Cristiano Fragassa
Keyword(s):  
Residual Stresses ◽  
Numerical Study ◽  
Ring Core

Prediction and Measurement of Residual Stresses Arising From Quenching of Stainless Steels

2004 ◽  
Author(s):  
S. Hossain ◽  
C. E. Truman ◽  
D. J. Smith ◽  
M. R. Daymond
Keyword(s):  
Stainless Steel ◽  
Residual Stresses ◽  
Stainless Steels ◽  
Numerical Study ◽  
Hole Drilling ◽  
The Core ◽  
Residual Stress State ◽  
Surface Residual Stresses ◽  
Compressive Residual Stresses ◽  
Good Agreement

This paper presents results from an experimental and numerical study examining the creation of highly triaxial residual stresses in stainless steel. This was motivated by a need to model and understand creep in aged power plant. The residual stresses were introduced by rapid spray water quenching of heated solid stainless steel spheres and cylinders. Finite element (FE) simulations predicted high compressive residual stresses around the surface of the specimens and tensile residual stresses near the centre. Surface residual stresses were measured using the incremental centre-hole drilling (ICHD) technique. Neutron diffraction (ND) was used to measure the interior residual stresses. The measurements were in good agreement with FE predictions. The ND measurements confirmed that a highly triaxial residual stress state existed in the core of the specimens.

Numerical study of the effect of diode laser-induced optical, thermal, and residual stresses on CZTS thin-films

2019 ◽  
Vol 31 (3) ◽  
pp. 032006
Author(s):  
Mohammad Shakil Ahmmed ◽  
Nazmul Huda
Keyword(s):  
Thin Films ◽  
Residual Stresses ◽  
Diode Laser ◽  
Numerical Study ◽  
Czts Thin Films

scholarly journals Experimental and numerical study of mooring chain residual stresses and implications for fatigue life

2020 ◽  
Vol 135 ◽  
pp. 105530 ◽  
Author(s):  
Ershad P. Zarandi ◽  
Bjørn H. Skallerud
Keyword(s):  
Fatigue Life ◽  
Residual Stresses ◽  
Numerical Study ◽  
Mooring Chain
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