Flow behaviour of Ti-6Al-4V alloy in a wide range of strain rates and temperatures under tensile, compressive and flexural loads

Prakash, Gyan; Singh, Nilamber Kumar; Gupta, Neelam

doi:10.1016/j.ijimpeng.2023.104549

Cited by 16 publications

(4 citation statements)

References 39 publications

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“…The constitutive relationship is described using the traction separation law. 22 The expression is Equations (18) and (19).…”

Section: Modeling For the Interface Layermentioning

confidence: 99%

“…Therefore, further investigation can be conducted on the influence of temperature on other machining damages. Moreover, scholars have revealed that temperature also has a certain effect on the processing behavior of Ti 17,18 . The above researches have proved that temperature is an important factor affecting the machining damage of stacks, and it is necessary to further explore the relationship between the temperature of the processing area and the quality of drilling of stacks.…”

Section: Introductionmentioning

confidence: 99%

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Numerical study on the heat effect on the drilling damage of Ti/CFRP stacks

Chen,

Zhao,

Wang

et al. 2024

Polymer Composites

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Carbon fiber reinforced plastics (CFRP) has strong sensitivity to temperature, as the stacking sequence is titanium alloy (Ti) to CFRP, the damage of CFRP is more severe due to the accumulation of cutting heat. In this study, a stress‐strain constitutive model of CFRP with the effect of thermal stress is proposed. On the basis, a simulation model of drilling Ti/CFRP stacks is established to explore the heat effect on the drilling damage. Based on the results, it can be concluded that the burr of Ti at hole exit is generally low due to the support of CFRP, and the burr height increases by 56.61% as the temperature rises from 182.02 to 355.69 °C. Besides, the intralaminar damage of CFRP is mainly caused by the fiber tensile failure and matrix tensile failure, and the matrix tensile failure is more affected by temperature. Moreover, delamination of CFRP decreases slightly with the reduce of drilling temperature. In addition, serious damage of CFRP on the hole wall usually occurs within the cutting angle of 90° to 135°, and pit defects can be reduced in a lower drilling temperature.Highlights A thermal effect stress‐strain constitutive model of CFRP is proposed. Ti/CFRP drilling model is developed based on the proposed constitutive model. Fiber and matrix tensile failure are main form of intralaminar damage of CFRP. Matrix tensile failure is more sensitive to temperature.

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“…The constitutive relationship is described using the traction separation law. 22 The expression is Equations (18) and (19).…”

Section: Modeling For the Interface Layermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical study on the heat effect on the drilling damage of Ti/CFRP stacks

Chen,

Zhao,

Wang

et al. 2024

Polymer Composites

View full text Add to dashboard Cite

show abstract

“…In addition, Kotkunde [27] and Tao [27,28] analyzed the predictive accuracy of the JC, Fields-Backofen (FB) [29], KHL, a modified version of the JC and mechanical threshold stress (MTS) equations for Ti-6AL-4 V alloys. Recently, Prakash et al [30] studied the flow stress for the same alloy but at high strain rate and high temperature by tensile, compressive and flexural loads. The modified JC and the JC models were employed to predict Al7075 behavior at increased temperatures; however, modified JC models have better predictions due to adjustments in the temperature term [31].…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of thermoviscoplastic material models in predicting the thermomechanical behavior of rolled homogenous armor steel

Gangwar,

Bhattacharjee,

Acharyya

et al. 2024

Phys. Scr.

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This paper studies the dynamic and elevated temperature behavior of rolled homogeneous armor steel, which is crucial for applications such as blast, impact, crash, and ballistic resistance. The deformation behavior is analyzed through tensile tests. The tensile tests of RHA steel are conducted at quasi-static (〖10〗^(-4) s^(-1)≤(ε_p ) ̇≤〖10〗^(-1) s^(-1) ) to dynamic (〖10〗^(-1) s^(-1)≤(ε_p ) ̇≤36.439 s^(-1) ) strain-rates and at high temperatures ranging from room temperature (RT,27℃) to 500℃. Phenomenological Johnson-Cook (JC) models and semi-physical Rusinek-Klepaczko (RK) material models are employed in finite element (FE) simulations of tensile tests. The JC failure model, with a small modification, is used along with the material models to simulate the loss of load-bearing capacity of the component. All necessary material parameters are extracted from the test data. The material models and the damage model are integrated into ABAQUS CAE FE software through a user-defined material subroutine (UMAT). The simulated outcomes acquired from diverse material models are validated with relevant experimental findings, and the effectiveness of each material model is evaluated through qualitative and quantitative assessments. Observations reveal limitations in the existing models to accurately replicate material behavior under tension, particularly in the dynamic strain rate, and elevated temperature range. Consequently, a modified version of the JC model (MJC) is explored to better account for the impact of temperature on strain hardening and strain rate hardening. The proposed modification in the material model significantly enhances the predictive accuracy of FE simulations of tensile deformation across the entire spectrum of studied strain rates and temperatures compared to the original JC and RK models.

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“…These discrepancies might not solely stem from the material's viscoelastic properties but could also be attributed to non-uniform axial forces or deformations induced by stress wave propagation or uneven viscous stress coupling. Any of these scenarios might result in a flawed perception of viscoelastic properties, suggesting that conventional SHPB experiments might lack the rigor to quantitatively study material viscoelastic effects [10][11][12] or qualitatively ascertain if a material exhibits viscoelastic traits [13][14][15][16] .…”

Section: Introductionmentioning

confidence: 99%

Analysis of Stress, Strain and Young's Modulus of Specimens under Propagation of the 1D Linear Elastic Stress Waves

Minju,

Xuan,

Yiding

et al. 2023

Lat. Am. j. solids struct.

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The meticulous design and data processing of the SHPB test necessitate an exact analysis of the elastic segment to ensure an accurate acquisition of dynamic parameters. When other conditions align with theoretical requirements, a pressing question arises: Is the Young's modulus obtained through the stress wave theory while processing SHPB test data accurate? This is an issue that must be clearly addressed. To tackle this question, analytical expressions for parameters such as stress difference and particle velocity difference were derived. This allowed for the analysis of curve characteristics, influencing factors, and their underlying mechanisms. Building on this, equations for determining Young's modulus were deduced. The research indicates that when the wave impedance ratio is relatively large, the Young's modulus provided by the "twowave method" inherently has a significant theoretical error. However, when the incident wave is sufficiently gradual, the Young's modulus deduced by the "three-wave method" proves to be remarkably accurate.

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Flow behaviour of Ti-6Al-4V alloy in a wide range of strain rates and temperatures under tensile, compressive and flexural loads

Cited by 16 publications

References 39 publications

Numerical study on the heat effect on the drilling damage of Ti/CFRP stacks

Numerical study on the heat effect on the drilling damage of Ti/CFRP stacks

Effectiveness of thermoviscoplastic material models in predicting the thermomechanical behavior of rolled homogenous armor steel

Analysis of Stress, Strain and Young's Modulus of Specimens under Propagation of the 1D Linear Elastic Stress Waves

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