Numerical simulation of the joining interface of dissimilar metals in vaporizing foil actuator welding: Forming mechanism and factors

2020 ◽  
Vol 60 ◽  
pp. 654-665
Author(s):  
Zhenghua Meng ◽  
Mengyuan Gong ◽  
Wei Guo ◽  
Wei Liu ◽  
Shangyu Huang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Dissimilar Metals ◽  
Forming Mechanism

Numerical Simulation of Heat Flow in Friction Stud Welding of Dissimilar Metals

2014 ◽  
Vol 39 (4) ◽  
pp. 3217-3224 ◽  
Author(s):  
N. Rajesh Jesudoss Hynes ◽  
P. Nagaraj ◽  
R. Palanichamy ◽  
C. A. K. Arumugham ◽  
J. Angela Jennifa Sujana
Keyword(s):  
Numerical Simulation ◽  
Heat Flow ◽  
Dissimilar Metals ◽  
Stud Welding ◽  
Friction Stud Welding

Study on Process and Defect of Arc Welding

2014 ◽  
Vol 608-609 ◽  
pp. 770-774
Author(s):  
Li Min Zhang
Keyword(s):  
Numerical Simulation ◽  
Stainless Steel ◽  
Carbon Steel ◽  
Arc Welding ◽  
Low Carbon Steel ◽  
Theory Model ◽  
Low Carbon ◽  
Flat Punch ◽  
Forming Mechanism ◽  
Material Forming

This paper welds a layer of austenitic stainless steel (SS316L) on specimen of low carbon steel (C15) with a cylindrical surface using MIG Technology in the experiment. The sample was upsetting experiment, cracks and material forming observation respectively using embossing punch, no lubrication flat punch and lubrication flat punch under the condition of 750 °C, 900 °C and 1050 °C. The paper research on forming mechanism of the specimen under laboratory conditions based on the experimental results, the axial symmetry theory model and Numerical Simulation.

The Mechanism for the Production of Coherent Structures near Wall of a Turbulent Boundary Layer Excited by Wall Local Impulse Disturbance

2013 ◽  
Vol 668 ◽  
pp. 521-524
Author(s):  
Wei Guo Wu ◽  
Chang Gen Lu ◽  
Shi Feng Xue
Keyword(s):  
Numerical Simulation ◽  
Boundary Layer ◽  
Turbulent Boundary Layer ◽  
Direct Numerical Simulation ◽  
Coherent Structures ◽  
Wall Region ◽  
Structural Distribution ◽  
Forming Mechanism ◽  
Close Relationship ◽  
Near Wall

Origins of coherent structures near wall of a turbulent boundary layer has been studied by direct numerical simulation (DNS). Forming mechanism of coherent structures agrees well with DNS results. A close relationship has been found between the evolutional characteristics and factors such as the magnitude and structural distribution of the wall local impulse, and the amount of energy and the length of loading time that the initial local impulse disturbance introduces into the wall region. Moreover, these parameters play key roles in the formation of coherent structures near wall of a turbulent boundary layer. So, the wall local impulse disturbance provides the origins for inducing the formation of coherent structures in wall region of a turbulent boundary layer.

Primary Study on Electron Beam Surfi-Sculpt of Ti-6Al-4V

2011 ◽  
Vol 418-420 ◽  
pp. 772-776
Author(s):  
Xi Chang Wang ◽  
Shui Li Gong ◽  
En Ming Guo ◽  
Haiyan Zhao ◽  
Heng Dong Xu
Keyword(s):  
Numerical Simulation ◽  
Surface Tension ◽  
Electron Beam ◽  
Control System ◽  
Metal Surface ◽  
Vapour Pressure ◽  
Dominant Role ◽  
Primary Study ◽  
Surface Processing ◽  
Forming Mechanism

Electron beam surfi-sculpt is a new metal surface processing technology, which is potentially used in many areas. In this paper, forming mechaniam of electron beam surfi-sculpt has been investigated by experiments and numerical simulation. Electron beam surfi-sculpt of Ti-6Al-4V was realized by a new control system and a innovative hexagon scanning waveform. At the same time, microstructure of protrusions was analysed. All the results of experiments and simulation show that forming mechanism is the interaction of vapour pressure and surface tension, but surface tension plays a dominant role during electron beam surfi-sculpt process.

Numerical Simulation of Temperature Field of Biomass Briquetting Based on ANSYS

2012 ◽  
Vol 430-432 ◽  
pp. 824-827
Author(s):  
Lei Xing ◽  
Xiang Dong Liu ◽  
Wei Lu
Keyword(s):  
Numerical Simulation ◽  
Thermal Analysis ◽  
Cross Section ◽  
Heating Temperature ◽  
Material Distribution ◽  
Molding Process ◽  
Forming Mechanism ◽  
Ansys Simulation ◽  
Material Forming ◽  
The Impact

According to the forming mechanism of biomass, straw lignin contained in the compression molding process will be softened by being squeezed and fractioned. The softened lignin binder plays a role in prompting the material forming. Using thermal analysis module of ANSYS simulation of the heating temperature within the epigenetic material distribution, this paper verifies temperature curing factors on the impact of biomass, deduces the biomass of the cross-section inferred lignin softening and melting conditions for the molding process, finally, it provides a basis to determine the parameters.

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