Thermomechanical behavior and constitutive modeling of tungsten-based composite over wide temperature and strain rate ranges

Xu, Zhijia; Huang, Fenglei

doi:10.1016/j.ijplas.2012.08.004

Cited by 49 publications

(24 citation statements)

References 54 publications

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“…Based on the coupled transient thermal and mechanical analysis, both the threedimensional temperature and the stress distribution in the micro wire electrode are determined. As a result, the tension of the micro wire electrode during the WEDM process can be optimized in according to the discharge energy, which is sampled and fed back to the tension control system in real time [6][7][8][9][10]. Then the development of the optimal tension control system is to be characterized by the form of masterslaver structure makes it possible to keep the wire tension optimal in the process of WEDM.…”

Section: Fuzhu Hanmentioning

confidence: 99%

Analysis of Wire Electrode Discharge Machining Process using FEA

Singh¹,

Jain²,

Sk³

2017

J Appl Mech Eng

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The Wire Electro Discharge Machining (WEDM) process is a violent thermal process where literally thousands of electrical discharges are produced in a fraction of a single second in order to erode a certain volume of metal workpiece. The process is mostly and efficiently used in situations where intricate complex shapes need to be machined in very hard materials (such as hardened tool steel, CBN, Ceramic etc). However, the process generates surfaces that have poor properties such as high tensile residual stresses, high surface roughness, presence of micro-cracks and microvoids. These properties vary with different levels of the main conventional machining parameters. The aim of this FEA simulation is to present a transient thermal and structural simulation work that has been a three-dimensional finite element model with two new materials to predict the temperature distribution, Total heat flux at different pulses of time as well as stress distribution in WEDM wire electrode. Thermal stress developed after the end of the spark and structural stresses developed due to tension in wire electrode. The effect on significant machining parameter pulseon-time has been investigated and found that the peak temperature is sharply increases with the parameters. Wire electrical discharge machining process is a mostly used non-conventional material removal processes.

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Section: Fuzhu Hanmentioning

confidence: 99%

Analysis of Wire Electrode Discharge Machining Process using FEA

Singh¹,

Jain²,

Sk³

2017

J Appl Mech Eng

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“…For WHA alloys, several works dealt with the mechanical characterization in compression [7][8][9][10][13][14][15][16], tension [4,5,[17][18][19][20][21][22] or fatigue [4,5] at different temperatures [17,18,22], strain-rates [7,9,15,18,20] or both of them [8,10,13,14,16,19].…”

Section: Bibliografic Reviewmentioning

confidence: 99%

“…In some cases, also an increase of voids coalesce was found at high temperature and low strain-rate [13]. In some studies, the experimental data were used to get the parameters identification for different strength material models [9,10,14,16,18].…”

Section: Bibliografic Reviewmentioning

confidence: 99%

“…Some of them are empirical models, while others are partially or completely physical-based. In [10], a comprehensive analysis was performed taking into account a considerably part of material models and their application to WHA alloys.…”

Section: Materials Modelingmentioning

confidence: 99%

“…Tungsten alloys are finally appropriate in severe tooling applications, such as die casting, extrusion or in general, high temperature conditions. In military applications the WHAs are specialized as a kinetic energy penetrator since, for example, they represent a valid alternative to conventional depleted uranium penetrators, which are extremely environmentally unsafe materials [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Mechanical characterization and modeling of the heavy tungsten alloy IT180

Scapin

2015

International Journal of Refractory Metals and Hard Materials

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Pure tungsten or its alloys (WHA) find applications in several fields, especially due to the fact that these materials show a good combination of mechanical and thermal properties and they are commonly used in aerospace, automotive, metal working processes, military and nuclear technologies. Looking at the scientific literature, a lack in the mechanical characterization over wide ranges in temperature and strain-rates was found, especially for W-Ni-Cu alloys. In this work, the mechanical characterization and the consequent material modeling of the tungsten alloy INERMET® IT180 were performed. The material is actually used in the collimation system of the Large Hadron Collider at CERN and several studies are currently under development in order to be able to numerically predict the material damage in case of energy beam impact, but to do this, a confident strength model has to be obtained. This is the basis of this work, in which a test campaign in compression and tension at different strain-rates and temperatures was carried out. The dynamic tests were performed using Hopkinson Bar setups, and the heating of the specimen was reached using an induction coil system. The experimental data were, finally, used to extract the coefficient of three different material models via an analytical approach.

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Constitutive Analysis on Thermal-Mechanical Properties of WHT1300HF High Strength Steel

Chi

Zhang

et al. 2015

Proceedings of SAE-China Congress 2015: Selected Papers

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Thermomechanical behavior and constitutive modeling of tungsten-based composite over wide temperature and strain rate ranges

Cited by 49 publications

References 54 publications

Analysis of Wire Electrode Discharge Machining Process using FEA

Analysis of Wire Electrode Discharge Machining Process using FEA

Mechanical characterization and modeling of the heavy tungsten alloy IT180

Constitutive Analysis on Thermal-Mechanical Properties of WHT1300HF High Strength Steel

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