Ductile Fracture Characterization for Medium Carbon Steel Using Continuum Damage Mechanics

Tsiloufas, Stergios Pericles; Plaut, Ronald Lesley

doi:10.4236/msa.2012.311109

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…Moreover, other researchers have reported similar results, despite differences in carbon concentration and microstructural characteristics. [ 52 ] There was a reduction of 10.6% for AR1, 18.8% for HT2, and 13.6% for HT3 when comparing the initial modulus of elasticity of each material with the modulus of elasticity obtained in the unloading cycle at the uniform deformation. Three main factors explain the elasticity modulus degradation: displacement of mobile dislocation and pile‐ups near the grain boundaries or solutes, damage evolution due to microcrack generation, and increased residual stresses.…”

Section: Resultsmentioning

confidence: 99%

“…A uniaxial cyclic tensile test is needed to obtain a relationship between the isotropic damage on a ductile material versus plastic strain. [ 50–53 ] The damage evolution can be estimated using Equation (1), where E * is the modulus of elasticity of an individual unloading cycle, and E is the dual‐phase steel modulus of elasticity. Therefore, the cumulative damage evolution can be plotted against the true strain per cycle, and the resultant curve represents the progressive decrease of stiffness due to each deformation cycle.

Ω = 1 - \frac{E^{*}}{E}

…”

Section: Introductionmentioning

confidence: 99%

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Damage Evolution and Microstructural Fracture Mechanisms Related to Volume Fraction and Martensite Distribution on Dual‐Phase Steels

Avendaño-Rodríguez

Rodríguez-Baracaldo

Weber

et al. 2023

steel research int.

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Currently, the steel manufacturing industry faces significant challenges in meeting the necessary processing requirements to develop low-weight and high-strength materials through efficient and clean production routes. For example, in the transportation and automotive manufacturing industries, lightweight structural materials that enhance the autonomy versus fuel consumption ratio, improve passenger safety, and optimize processing costs, are increasingly a mandatory requirement in the research and development of recent manufacturing projects. [1] In this sense, the development of advanced high-strength steels (AHSS), particularly dual-phase steels (DP), has enabled the improvement of automotive engineering safety through the use of sheet metal members (safety cage components, roof rails, and rear shock reinforcements) with thin walls to improve crashworthiness. [2,3] Low-carbon dual-phase steels consist of a ferrite matrix and a second phase of distributed martensite. The two phases combined, usually produced by intercritical heat treatments (IHT) and water quenching, are responsible for the plastic flow mechanism observed in these steels. [4,5] Shear stresses are generated along grain boundaries due to the austenite to martensite transformation during the quenching process. Therefore, due to these microstructure volume changes, dislocation density increases. [6,7] As a result, a pile-up of sliding unanchored dislocations reduces yield stress and interacts to produce a high work-hardening rate. [8] Hence, the continuous plastic flow behavior evidenced by dual-phase steel results from the above-mentioned factors. [9] The deformation process of

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Section: Resultsmentioning

confidence: 99%

Ω = 1 - \frac{E^{*}}{E}

…”

Section: Introductionmentioning

confidence: 99%

Damage Evolution and Microstructural Fracture Mechanisms Related to Volume Fraction and Martensite Distribution on Dual‐Phase Steels

Avendaño-Rodríguez

Rodríguez-Baracaldo

Weber

et al. 2023

steel research int.

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A Review on CDM-Based Ductile Models and its Application

Gautam¹,

Yadav

Ajit

et al. 2022

Trans Indian Inst Met

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Accounting of Damage of Asphalt Concrete in the Criteria for Calculating the Pavement

Chusov

Aleksandrova

Семенова

2021

IOP Conf. Ser.: Mater. Sci. Eng.

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The aim of the article is to develop a general method for accounting for the accumulation of damage in asphalt concrete when calculating pavement according to strength criteria. The article analyzes the methods of calculating pavement according to the criteria: elastic deflection, resistance of the asphalt concrete to tensile bending, and shear resistance in the soil of subgrade. It is established that at present the fatigue of materials is taken into account by mathematical functions that connect the strength parameters of asphalt concrete with the number of applied loads. However, there is no single solution that take into account the effect of damage of asphalt concrete in the pavement on stresses and deformations that occur in the pavement and other layers of pavement. It is proposed to use the principle of equivalent deformation of a damaged and undamaged body to calculate the damage of asphalt concrete. In accordance with the formula of this principle, the elastic modulus decreases with increasing damage. The resulting formula allows to calculate the modulus of elasticity of the upper layer of a two-layer system when calculating pavement according to the criteria of coating resistance to tensile from bending and shear in the soil of subgrade. The same formula allows us to calculate the equivalent elastic modulus of a two-layer system. Thus, the proposed calculation method contains one general approach to accounting for damage accumulation in all three criteria for calculating pavement on strength.

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Ductile Fracture Characterization for Medium Carbon Steel Using Continuum Damage Mechanics

Cited by 6 publications

References 22 publications

Damage Evolution and Microstructural Fracture Mechanisms Related to Volume Fraction and Martensite Distribution on Dual‐Phase Steels

Damage Evolution and Microstructural Fracture Mechanisms Related to Volume Fraction and Martensite Distribution on Dual‐Phase Steels

A Review on CDM-Based Ductile Models and its Application

Accounting of Damage of Asphalt Concrete in the Criteria for Calculating the Pavement

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