Finite Element Analysis on Single Abrasive Grinding Ti6Al4V Alloy

2018 ◽  
Vol 764 ◽  
pp. 184-193
Author(s):  
Wen Guo Huo ◽  
Xiang Yu Zhang ◽  
Qing Yun Dong ◽  
Juan Shao
Keyword(s):  
Finite Element ◽  
Cutting Speed ◽  
Element Model ◽  
Ti6al4v Alloy ◽  
Work Piece ◽  
Element Analysis ◽  
Abrasive Wheel ◽  
Lagrangian Finite Element ◽  
Higher Temperature ◽  
Grinding Simulation

The paper presents the simulated 3D Finite Element Model (FEM) while grinding the Ti6Al4V alloy using a single abrasive wheel. Grinding simulation was carried out using a Lagrangian finite element based machining model to predict the tangential cutting force, temperature distribution at grinding zone and the effective stress and strain. All simulations were performed according to the cutting conditions designed, using the plane up-grinding. The work piece was considered as typical materials to machine difficulty. As the cutting speed is increased from 15 m/min to 33 m/min at higher feed rate, a maximum value of 750 MPa stress and higher temperature localization to an extent of 900°C at grinding zone were observed.

Temperature Simulation in High-Speed Grinding by Using Deform-3D

2011 ◽  
Vol 189-193 ◽  
pp. 1849-1853 ◽  
Author(s):  
Jing Zhu Pang ◽  
Bei Zhi Li ◽  
Jian Guo Yang ◽  
Zhen Xin Zhou
Keyword(s):  
Finite Element ◽  
High Speed ◽  
Element Model ◽  
Element Analysis ◽  
Strain And Strain Rate ◽  
High Speed Grinding ◽  
Grinding Mechanism ◽  
Temperature Strain ◽  
Grinding Simulation ◽  
Deform 3D

Grinding is one of the most important operations in material processing. The study on grinding mechanism is difficult to carry out because of the difficulty in measuring the actual grinding temperature, stress and strain by experiments. Finite element analysis software Deform-3D is employed to create the Johnson-Cook material constitutive model for high-speed grinding simulation. Grinding model was constructed to reflect the temperature, strain and strain rate in the process of grinding 40Cr steel. The temperature of grinding area in simulation is analyzed to verify whether the finite element model is reasonable.

Effect of ultrasonic vibration on frictional behavior of tool–chip interface: Finite element analysis and experimental study

2016 ◽  
Vol 232 (7) ◽  
pp. 1212-1220 ◽  
Author(s):  
Mohammad Lotfi ◽  
Saeid Amini
Keyword(s):  
Finite Element ◽  
Ultrasonic Vibration ◽  
Cutting Speed ◽  
Element Model ◽  
Optical Microscope ◽  
304 Stainless Steel ◽  
Element Analysis ◽  
Force Profile ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Machining

Ultrasonic-assisted machining is an advanced method which allows significant improvements in processing of materials. In this study, a finite element model is developed to study the effect of ultrasonic vibration on machinability of AISI 304 stainless steel in which the results are compared with conventional cutting process. A pneumatic quick-stop device and an optical microscope are applied to validate the simulation results by measuring shear angle and sticky region experimentally. As a result, the analysis of heat generation in primary and secondary deformation zones shows that temperature increases in the primary zone when ultrasonic vibration is used, while a significant reduction in temperature is seen in the tool–chip contact zone. This area is considerably effective on the length of sticky region. Moreover, the influence of cutting speed and feed rate on tool–chip engagement time is investigated by the analysis of cutting force profile.

A Finite Element Analysis for the Characteristics of Cutting Parameters in 3D Oblique Milling Process

2010 ◽  
Vol 97-101 ◽  
pp. 3010-3013
Author(s):  
Guo Hua Qin ◽  
S.Q. Xin ◽  
Dong Lu ◽  
Yi Ming Rong
Keyword(s):  
Finite Element ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Element Model ◽  
Milling Process ◽  
Machining Process ◽  
Element Analysis ◽  
Complete Procedure ◽  
Commercial Software Package ◽  
Chip Removal

In the field of aeronautical and astronautical manufacturing, milling is a basic machining process by which a surface is generated by progressive chip removal. Therefore, this paper reports a complete procedure of the finite element model for the 3D oblique milling process using the commercial software package ABAQUS. Effect of various parameters on cutting forces is mainly discussed. The model correctly exhibits the observed transition from small to large force with increasing cutting speed and cutting depth.

Stress Strain Analysis of Steel Specimens Not Wholly Quenched

2011 ◽  
Vol 261-263 ◽  
pp. 702-706
Author(s):  
Rui Jie Wang ◽  
He Ming Cheng ◽  
Bao Dong Shao ◽  
Jian Yun Li
Keyword(s):  
Finite Element ◽  
Fatigue Crack Initiation ◽  
Strain Analysis ◽  
Element Model ◽  
Cyclic Strength ◽  
Work Piece ◽  
Stress Strain ◽  
Element Analysis ◽  
Quenched Steel ◽  
Crack Initiation Life

A finite element model of not wholly quenched steel fatigue specimen is established. Hardness value of some distance to work piece surface are assumed different and cyclic strength coefficients of different zones are different, both is assumed to be proportional to hardness value. Elasto-plastic finite element analysis was carried out for this model. According to the stress-strain distribution on transverse section, the effect of not wholly quenched on fatigue crack initiation life is analyzed.

Finite Element Simulation of the Orthogonal Cutting Based on Abaqus

2013 ◽  
Vol 821-822 ◽  
pp. 1410-1413 ◽  
Author(s):  
Xue Bin Liu ◽  
Xi Bin Wang ◽  
Chong Ning Li ◽  
San Peng Deng
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Orthogonal Cutting ◽  
Element Model ◽  
Friction Model ◽  
Cutting Process ◽  
Work Piece ◽  
Conduction Model ◽  
Element Analysis ◽  
Element Simulation

In view of orthogonal cutting, finite element simulation geometry is built. the friction model, thermal conduction model and chip separation model are established between chip and tool using Abaqus which is a finite element analysis software. Through a specific example, two-dimensional finite element model have been established, simulating the cutting process stress distribution of the work piece surface is also obtained during processing. While simulation analyzes the relationship between the rake angle and shear angle, the results of simulation and experiment are basically the same, thus further verify the credibility of Abaqus simulation results on orthogonal cutting, and the feasible is also proved of obtaining cutting data by the use of Abaqus simulation cutting process.

scholarly journals Finite element analysis of spot laser of steel welding temperature history

2009 ◽  
Vol 13 (4) ◽  
pp. 143-150 ◽  
Author(s):  
Khalid Shibib ◽  
Mohammed Minshid ◽  
Mayada Tahir
Keyword(s):  
Finite Element ◽  
Welding Process ◽  
Element Model ◽  
Temperature History ◽  
Beam Power ◽  
Work Piece ◽  
Welding Zone ◽  
Element Analysis ◽  
Steel Cylinder ◽  
Welding Temperature

Laser welding process reduces the heat input to the work-piece which is the main goal in aerospace and electronics industries. A finite element model for axi-symmetric transient heat conduction has been used to predict temperature distribution through a steel cylinder subjected to CW laser beam of rectangular beam profile. Many numerical improvements had been used to reduce time of calculation and size of the program so as to achieve the task with minimum time required. An experimental determined absorptivity has been used to determine heat induced when laser interact with material. The heat affected zone and welding zone have been estimated to determine the effect of welding on material. The ratio of depth to width of the welding zone can be changed by proper selection of beam power to meet the specific production requirement. The temperature history obtained numerically has been compared with experimental data indicating good agreement.

scholarly journals Finite Element Analysis of Large Plastic Deformation Process of Pure Molybdenum Plate During Hot Rolling

2021 ◽  
Author(s):  
Ping Hu ◽  
Quan Cheng ◽  
Hai rui Xing ◽  
Shi lei Li ◽  
Jia yu Han ◽  
...  
Keyword(s):  
Finite Element ◽  
Hot Rolling ◽  
Compressive Strain ◽  
Three Dimensional ◽  
Element Model ◽  
Work Piece ◽  
Element Analysis ◽  
Pure Molybdenum ◽  
Plastic Deformation Process ◽  
The Common

Abstract Rare molybdenum resources have been increasingly involved in heavy industries. In this paper, the common unidirectional and cross hot rolling operations, for pure molybdenum plate, are numerically simulated by using MSC. Marc software. An elastic-plastic finite element model is employed together with updated Lagrange method to predict stress and strain fields in the work-piece. The results showed that there was a typical three-dimensional additional compressive stress ( σy > σx > σz ) in deformation zone, while strain could be divided into uniaxial compressive strain and biaxial tensile strain ( Ey > Ex > Ez ). Tensile stress σx increased with the accumulation of reduction and the decrease of friction coefficient at the edge of width spread. More importantly, the interlaced deformation caused by cross commutation was helpful to repair the severe anisotropy created by unidirectional hot rolling. By comparing the theoretical verification of rolling forces and the measured temperatures with the simulated values, eventually, it is demonstrated that the model is aligning well with the actual engineering.

КОНСТРУКТИВНО-ТЕХНОЛОГІЧНІ ОСОБЛИВОСТІ ХВОСТО-ВИХ БАЛОК СІТЧАСТОГО ТИПУ З ПОЛІМЕРНИХ КОМПО-ЗИЦІЙНИХ МАТЕРІАЛІВ ВЕРТОЛЬОТІВ ТРАНСПОРТНОЇ КАТЕГОРІЇ

2020 ◽  
pp. 15-30
Author(s):  
А. Г. Гребеников ◽  
И. В. Малков ◽  
В. А. Урбанович ◽  
Н. И. Москаленко ◽  
Д. С. Колодийчик
Keyword(s):  
Finite Element ◽  
Strain State ◽  
Layer Structure ◽  
Metal Structure ◽  
Element Model ◽  
Stress Strain ◽  
Element Analysis ◽  
Mesh Structure ◽  
Stress Strain State ◽  
Mesh Structures

The analysis of the design and technological features of the tail boom (ТB) of a helicopter made of polymer composite materials (PCM) is carried out.Three structural and technological concepts are distinguished - semi-monocoque (reinforced metal structure), monocoque (three-layer structure) and mesh-type structure. The high weight and economic efficiency of mesh structures is shown, which allows them to be used in aerospace engineering. The physicomechanical characteristics of the network structures are estimated and their uniqueness is shown. The use of mesh structures can reduce the weight of the product by a factor of two or more.The stress-strain state (SSS) of the proposed tail boom design is determined. The analysis of methods for calculating the characteristics of the total SSS of conical mesh shells is carried out. The design of the tail boom is presented, the design diagram of the tail boom of the transport category rotorcraft is developed. A finite element model was created using the Siemens NX 7.5 system. The calculation of the stress-strain state (SSS) of the HC of the helicopter was carried out on the basis of the developed structural scheme using the Advanced Simulation module of the Siemens NX 7.5 system. The main zones of probable fatigue failure of tail booms are determined. Finite Element Analysis (FEA) provides a theoretical basis for design decisions.Shown is the effect of the type of technological process selected for the production of the tail boom on the strength of the HB structure. The stability of the characteristics of the PCM tail boom largely depends on the extent to which its design is suitable for the use of mechanized and automated production processes.A method for the manufacture of a helicopter tail boom from PCM by the automated winding method is proposed. A variant of computer modeling of the tail boom of a mesh structure made of PCM is shown.The automated winding technology can be recommended for implementation in the design of the composite tail boom of the Mi-2 and Mi-8 helicopters.

Torsional Analysis of a Steel Cord-Rubber Tire Belt Structure

1996 ◽  
Vol 24 (4) ◽  
pp. 339-348 ◽  
Author(s):  
R. M. V. Pidaparti
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Composite Structures ◽  
Three Dimensional ◽  
Element Model ◽  
Torsional Stiffness ◽  
Element Analysis ◽  
Rubber Belt ◽  
Steel Cord ◽  
Torsional Analysis

Abstract A three-dimensional (3D) beam finite element model was developed to investigate the torsional stiffness of a twisted steel-reinforced cord-rubber belt structure. The present 3D beam element takes into account the coupled extension, bending, and twisting deformations characteristic of the complex behavior of cord-rubber composite structures. The extension-twisting coupling due to the twisted nature of the cords was also considered in the finite element model. The results of torsional stiffness obtained from the finite element analysis for twisted cords and the two-ply steel cord-rubber belt structure are compared to the experimental data and other alternate solutions available in the literature. The effects of cord orientation, anisotropy, and rubber core surrounding the twisted cords on the torsional stiffness properties are presented and discussed.

Finite Element Analysis of Nonuniformity of Tires with Imperfections5

2007 ◽  
Vol 35 (3) ◽  
pp. 226-238 ◽  
Author(s):  
K. M. Jeong ◽  
K. W. Kim ◽  
H. G. Beom ◽  
J. U. Park
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Radial Force ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Dimensional Finite Element ◽  
Force Variation ◽  
Three Dimensional Finite Element

Abstract The effects of variations in stiffness and geometry on the nonuniformity of tires are investigated by using the finite element analysis. In order to evaluate tire uniformity, a three-dimensional finite element model of the tire with imperfections is developed. This paper considers how imperfections, such as variations in stiffness or geometry and run-out, contribute to detrimental effects on tire nonuniformity. It is found that the radial force variation of a tire with imperfections depends strongly on the geometrical variations of the tire.

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