Finite Element Simulation for the Surface Flaw in Tube Open-die Cold Extrusion Process

2010 ◽  
Author(s):  
Pei Weichi ◽  
Li Yaogang
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Extrusion Process ◽  
Surface Flaw ◽  
Cold Extrusion ◽  
Element Simulation

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.

Optimization approach for processing design in the extrusion process of plastic profile with metal insert

e-Polymers ◽  
2012 ◽  
Vol 12 (1) ◽  
Author(s):  
Yue Mu ◽  
Guoqun Zhao ◽  
Xianghong Wu
Keyword(s):  
Neural Network ◽  
Genetic Algorithm ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Extrusion Process ◽  
Optimization Approach ◽  
Processing Conditions ◽  
Metal Insert ◽  
Element Simulation ◽  
Plastic Profile

AbstractThe extrusion process of plastic profile with metal insert is a kind of novel and advanced plastic processing method which requires rigorous control on processing conditions to ensure the quality and performance of final products. However, it is still difficult to achieve an optimal processing design by using traditional “trial and error” method. An optimization approach for the processing design in the extrusion process of plastic profile with metal insert is proposed based on finite element simulation, back propagation neural network and genetic algorithm in the study. The finite element simulation is conducted to predict polymer melts flow in the extrusion process. The simulated results are extracted for the establishment of neural network. The genetic algorithm is performed for the search of globally optimal design variable with its objective function evaluated by using the established neural network model. The proposed approach is adopted for the optimization of processing conditions in the extrusion process of plastic profile with metal insert. According to the flow balance principle, the uniformity of outlet flow distribution is taken as the optimization objective with a constraint condition on the maximum shear stress. The optimization of two processing parameters including the volume flow rate and the metal insert moving velocity is conducted in the extrusion process of plastic profile with metal insert and the optimization objective is successfully achieved.

Finite Element Simulation of Backward Micro Extrusion for Annealed Copper

2018 ◽  
Author(s):  
Md Mosleh Uddin ◽  
Debabrata Mondal ◽  
Paul D. Herrington
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Extrusion Process ◽  
Simulation Software ◽  
Uniaxial Compression Test ◽  
Micro Forming ◽  
Element Simulation ◽  
Micro Parts ◽  
Annealed Copper ◽  
Bulk Production

The growing demand of miniaturized products is tremendously influencing the progress of micro-forming technologies. The implementations of micro technologies in the field of microelectronics, sensors, and medical equipment necessitate versatile micro-forming processes. These processes facilitate the bulk production of micro parts with higher precision, minimum material waste, and better surface finish. However, micro-forming technologies are still expensive due to the limitations of traditional materials and stringent size requirements. Finite element simulations are being widely used to analyze the manufacturing process parameters before going into production. In this research, a backward micro-extrusion process is simulated for annealed copper by using commercial Finite element simulation software. The effects of different punch diameters, friction coefficients, punch velocities on the load-displacement curves and the resulting strain distributions are investigated. To overcome limitations of the post-yield hardening data from the uniaxial compression test, the Ramberg-Osgood model is proposed to predict the responses at the higher plastic strain.

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