Damage prediction for magnesium matrix composites formed by liquid-solid extrusion process based on finite element simulation

2010 ◽  
Vol 20 (9) ◽  
pp. 1737-1742 ◽  
Author(s):  
Le-hua QI ◽  
Jian LIU ◽  
Jun-tao GUAN ◽  
Li-zheng SU ◽  
Ji-ming ZHOU
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Extrusion Process ◽  
Matrix Composites ◽  
Magnesium Matrix ◽  
Damage Prediction ◽  
Magnesium Matrix Composites ◽  
Element Simulation

scholarly journals Finite Element Simulation and Experimental Determination of Residual Stresses after Extrusion Process in Metal Matrix Composites

2005 ◽  
Vol 14 (4) ◽  
pp. 096369350501400
Author(s):  
G. Albertini ◽  
E. Girardin ◽  
A. Giuliani ◽  
D.E. Ilie ◽  
B.P. O'Donnell ◽  
...  
Keyword(s):  
Finite Element ◽  
Metal Matrix ◽  
Extrusion Process ◽  
Matrix Composites ◽  
X Ray Diffraction ◽  
Element Analysis ◽  
Element Simulation ◽  
The Difference ◽  
Two Phases

The introduction of reinforcement in a Metal Matrix causes micro-stresses which may prove to be very detrimental for the life of the component. Submitting the components to annealing thermal treatments introduces thermal mismatch stresses. They are generated during cooling due to the difference between the thermal expansion coefficient of the two phases. Finite Element Analysis has been performed to study this effect and the results have been experimentally validated by X-ray diffraction, SEM investigation and EDAX on an AA2009 + 25% SiCp extruded shaft for helicopters, simplified as a thin extruded tube.

A Review on the Finite Element Modeling of the Particle Reinforced Metal Matrix Composites in Cutting Process

2020 ◽  
Vol 14 (1) ◽  
pp. 39-55
Author(s):  
Xiaole Qi ◽  
Guohe Li ◽  
Qi Zhang ◽  
Fei Sun
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Finite Element Model ◽  
Finite Element Simulation ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Element Model ◽  
Matrix Composites ◽  
Element Simulation ◽  
Element Method

Background:: Particle Reinforced Metal Matrix Composites (PRMMCs) are widely used because of the higher specific strength, better dimensional stability, lower thermal expansion coefficient, better wear and corrosion resistance. However, the existence of reinforcing particles makes it hard to machine. The main manifestations are as follows: severe tool wear, easy generation of debris tumors in processing, and many defects on the machined surface, etc. These seriously limit its wider application. The Finite Element Method (FEM) has been widely applied in the research of PRMMCs machining according to recent patents, which can improve the efficiency and reduce the cost of research. Therefore, it is necessary to carry out a deep research for the processing technology of PRMMCs. Methods:: In this paper, the latest research progress of finite element simulation of cutting PRMMCs was summarized. The key technologies of finite element simulation, including constitutive model, geometric model, friction model between chip and tool, fracture criterion and mesh generation, are comprehensively analyzed and summarized. The application in the specific processing methods was discussed, such as turning, milling, grinding, ultrasonic vibration grinding and drilling. The existing problems and development direction of the simulation of PRMMCs cutting are also given. Besides, a lot of patents on finite element simulation for PRMMCs machining were studied. Results:: Finite element model for the actual composition determines the accuracy of finite element simulation. Through the secondary development of finite element software, a more realistic finite element model of Particle reinforced metal matrix composites can be established. Conclusion:: Finite Element Method (FEM) provides a new approach for the study of mechanism of Particle reinforced metal matrix composites machining. Quantitative analysis and prediction of micro- details in cutting can be realized.

scholarly journals Damage dependent material properties in a Finite Element Simulation of a hybrid forward extrusion process

2017 ◽  
Vol 207 ◽  
pp. 437-441 ◽  
Author(s):  
Stephan Hojda ◽  
Karl J.X. Sturm ◽  
Michael Terhorst ◽  
Fritz Klocke ◽  
Gerhard Hirt
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Material Properties ◽  
Extrusion Process ◽  
Forward Extrusion ◽  
Element Simulation

Simulation Analysis of Metal Flow during Extending Extrusion Semisolid AA2017 Alloy

2012 ◽  
Vol 430-432 ◽  
pp. 293-296
Author(s):  
Ren Guo Guan ◽  
Zhan Yong Zhao ◽  
Chao Lian ◽  
Qiu Sheng Zhang ◽  
Chun Guang Dai ◽  
...  
Keyword(s):  
Finite Element ◽  
Flow Velocity ◽  
Finite Element Simulation ◽  
Simulation Analysis ◽  
Metal Flow ◽  
Extrusion Process ◽  
Element Simulation

Extending extrusion process of semisolid AA2017 alloy was achieved. Metal flow during the process was analyzed by the finite element simulation. It was shown that alloy flow velocity decreases gradually from the center part to the sides of the mould, sometimes a transitional turbulence region appears in the middle. A smaller declining angle θ and without step d is suggested in the design mould. Alloy flow velocity at the center of the forming region decreases linearly with increases of the extending ratio s1/s0.

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