Establishing of Constitutive Equation of ZGMn13 Steel and Cutting Simulation Test

2011 ◽  
Vol 188 ◽  
pp. 711-716
Author(s):  
Li Xu ◽  
Tao Teng ◽  
L. Yang ◽  
Jia Fan
Keyword(s):  
Finite Element ◽  
Constitutive Equation ◽  
Finite Element Simulation ◽  
Split Hopkinson Pressure Bar ◽  
Manganese Steel ◽  
Plastic Behavior ◽  
Hopkinson Pressure Bar ◽  
High Manganese ◽  
High Manganese Steel ◽  
Element Simulation

Constitutive equation of material has an important influence on the simulation results in the finite element simulation. In this paper, Johnson-Cook constitutive equation parameters of the high manganese steel ZGMn13 have been derived from the data of compression tests and split Hopkinson pressure bar test. Based on this equation, the finite element simulation of ZGMn13 steel cutting has been done. This Johnson-Cook constitutive model of high manganese steel ZGMn13 can accurately describe the plastic behavior of the material.

Finite Element Simulation of High Speed Machining of Ti6Al4V Alloy and the Corresponding Experimental Study

2016 ◽  
Vol 836-837 ◽  
pp. 444-451 ◽  
Author(s):  
Long Hui Meng
Keyword(s):  
Finite Element ◽  
Constitutive Model ◽  
Finite Element Simulation ◽  
High Speed ◽  
Split Hopkinson Pressure Bar ◽  
Ti6al4v Alloy ◽  
Machining Process ◽  
High Speed Machining ◽  
Hopkinson Pressure Bar ◽  
Element Simulation

Finite element simulation of high speed machining of Ti6Al4V alloy was carried out based on the software of Abaqus. The Johnson-Cook constitutive model was chosen for the material of Ti6Al4V, the parameters of the model were obtained through the SHPB (Split Hopkinson Pressure Bar) experiment. The similarity of the chips obtained from the simulation and that obtained from the experiment indicated that the parameters of the Johnson-Cook constitutive model for Ti6Al4V alloy were reliable. Different cutting parameters and different tool geometric parameters were used in the simulations to find out their effects to the simulation results. Also a comparison was made between the results got form the simulations results and the experimental results, a good agreement between them indicated that the finite element simulation of high speed machining of Ti6Al4V is reliable, so it can be concluded that the finite element simulations of high speed machining can be widely used in practice to study the more about the machining process and reduce the experimental expenses.

Finite Element Simulation for Design Verification of a Small Size Split Hopkinson Pressure Bar

2013 ◽  
Author(s):  
Mohamad Dyab ◽  
Payam Matin ◽  
Yuanwei Jin
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
High Speed ◽  
Split Hopkinson Pressure Bar ◽  
Hopkinson Bar ◽  
Hopkinson Pressure Bar ◽  
Element Simulation ◽  
Split Hopkinson ◽  
Pressure Bar ◽  
High Speed Deformation

Split Hopkinson Pressure Bar is an apparatus that is used to study materials behavior under high speed deformation, where strain rate is very high. Hopkinson bars are usually custom made based on the needs of customers, who are mostly researchers in universities or research labs. In this work, the authors designed a small size split Hopkinson pressure bar. The objectives of this project are 1) to design a well-structured Hopkinson bar by means of solid mechanics fundamentals 2) to implement finite element simulation to verify the design. The designed Split Hopkinson bar consists of two metallic bars with a specimen placing in between, a striker assembly, an air compressor, instrumentation and a data acquisition system. The solid model of the apparatus is built using CAD software SolidWorks. The design is validated by extensive finite element simulation using ABAQUS. A working prototype is physically built and tested. High speed deformation experiments are developed using the prototype fabricated. The experiments are conducted as an impact is made by the striker on one of the bars, which generates stress wave through the specimen and the other bar. During the experiments, strain in specimen is determined by measuring strains on the bars using strain gauges mounted on the bars. Preliminary tests demonstrate that the performance of the apparatus is as predicted by the FEM simulation. This work is supported by an NSF’s CMMI (Civil, Mechanical and Manufacturing Innovation) program.

Simulation and Experimental Research on Milling Force of High Manganese Steel

2010 ◽  
Vol 143-144 ◽  
pp. 863-867
Author(s):  
Yong Tang ◽  
Qiang Wu ◽  
Xiao Fang Hu ◽  
Yu Zhong Li
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
High Speed ◽  
Shear Failure ◽  
Element Model ◽  
Manganese Steel ◽  
High Manganese ◽  
Milling Force ◽  
High Manganese Steel ◽  
High Speed Milling

The milling process of hard-to-cut material high manganese steel ZGMn13 was simulated and experimental studied based on Johnson-Cook material model and shear failure model.The high speed milling processing finite element model has established adopting arbitrary Lagrangian-Euler method (ALE) and the grid adaptive technology,The influence of milling parameters to milling force is analyzed in the high speed milling high manganese steel process. The simulated and experimental results being discussed are matched well. It certifies the finite element model is correct.

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