Application of a GTN Damage Model Predicting the Fracture of 5052-O Aluminum Alloy High-Speed Electromagnetic Impaction

Feng, Fan; Li, Jianjun; Yuan, Peiyan; Zhang, Qixian; Huang, Pei Yan; Su, Hongliang; Chen, Rongchuang

doi:10.3390/met8100761

Cited by 19 publications

(13 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The titanium alloy was used, but the plastic hardening and damage parameters are estimated from the experimental shear curve (see Table 4). With these parameters, the maximum equivalent stress is about σ max = 1340 MPa, and a ductility of ε p max = 0.297 [55,56]. As shown in Figure 8, the coupled material model had fit the experiment value well when equivalent plastic strain less than ε p = 0.21 and the material damage accumulate rapidly to D max = 0.99 when equivalent plastic strain ε p = 0.297.…”

Section: Pure Shear Test Of Titanium Alloy Sheetmentioning

confidence: 88%

“…The elastic-plastic and damage parameters of the aluminum alloy (5086) are given in Table 6. The plastic parameters of the material are obtained, from the experimental curves, in which the maximum stress is about σ max = 366 MPa for equivalent plastic strain ε p = 0.17 and then the material stiffness deteriorates to zero when equivalent plastic strain equal to ε p max = 0.27 ( Figure 12) [55,56]. The numerical meshing parameters of the compression test are presented in Table 7.…”

Section: Compression Of Thin Truncated Aluminum Sheet Cylindermentioning

confidence: 99%

“…Table 9. Elasto-plastic and damage parameters of the oxygen-free-high-conductivity copper [55,56]. Table 12.…”

Section: Blanking Of Oxygen-free-high-conductivity (Ofhc) Copper Sheementioning

confidence: 99%

“…The internal roughness of SPIF shaped component is influenced primarily by the tool (dp) and step (∆Z) sizes, as other factors such as, sheet thickness, material properties, forming angle, feed rate and etc., may affect both the internal and external roughness [54][55][56][57][58]. The influence of forming speed, both rotational spindle speed N and feed rate V f had an important effect on the heat generation due to the friction with the sheet.…”

Section: Incremental Sheet Forming Of Titanium Conical Shapementioning

confidence: 99%

“…Material parameters of aluminum alloy 5086[55,56]. Adaptive remeshing parameters for the compressive test of aluminum alloy 5086.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Simulation of Sheet Metal Forming Processes Using a Fully Rheological-Damage Constitutive Model Coupling and a Specific 3D Remeshing Method

Cherouat

Borouchaki

Zhang

2018

Metals

View full text Add to dashboard Cite

Automatic process modeling has become an effective tool in reducing the lead-time and the cost for designing forming processes. The numerical modeling process is performed on a fully coupled damage constitutive equations and the advanced 3D adaptive remeshing procedure. Based on continuum damage mechanics, an isotropic damage model coupled with the Johnson–Cook flow law is proposed to satisfy the thermodynamic and damage requirements in metals. The Lemaitre damage potential was chosen to control the damage evolution process and the effective configuration. These fully coupled constitutive equations have been implemented into a Dynamic Explicit finite element code Abaqus using user subroutine. On the other hand, an adaptive remeshing scheme in three dimensions is established to constantly update the deformed mesh to enable tracking of the large plastic deformations. The quantitative effects of coupled ductile damage and adaptive remeshing on the sheet metal forming are studied, and qualitative comparison with some available experimental data are given. As illustrated in the presented examples this overall strategy ensures a robust and efficient remeshing scheme for finite element simulation of sheet metal‐forming processes.

show abstract

Section: Pure Shear Test Of Titanium Alloy Sheetmentioning

confidence: 88%

Section: Compression Of Thin Truncated Aluminum Sheet Cylindermentioning

confidence: 99%

“…Table 9. Elasto-plastic and damage parameters of the oxygen-free-high-conductivity copper [55,56]. Table 12.…”

Section: Blanking Of Oxygen-free-high-conductivity (Ofhc) Copper Sheementioning

confidence: 99%

Section: Incremental Sheet Forming Of Titanium Conical Shapementioning

confidence: 99%

“…Material parameters of aluminum alloy 5086[55,56]. Adaptive remeshing parameters for the compressive test of aluminum alloy 5086.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Simulation of Sheet Metal Forming Processes Using a Fully Rheological-Damage Constitutive Model Coupling and a Specific 3D Remeshing Method

Cherouat

Borouchaki

Zhang

2018

Metals

View full text Add to dashboard Cite

show abstract

Study of the optical, thermal, morphological and mechanical characteristics of a laser weldable fiber reinforced polymer

et al. 2022

View full text Add to dashboard Cite

In recent years, varied industrial users such as the automotive and electronic manufacturers, have greatly expanded the application of technical polymers, exploring the lower weight, improved moldability of complex parts and good mechanical performance that these materials can provide, especially when reinforced with fibers. Among these materials, polybutylene terephthalate reinforced with 30% glass fiber, designated as PBT GF30, is highly interesting, since it combines excellent mechanical properties with watertightness, allowing PBT GF30 to be used in the encapsulation of sensitive electronic elements. However, to maintain access, PBT GF30 products always require the use of joints, which are often created using laser welding. This work presents a detailed characterization of the thermal, optical, mechanical, and morphological characteristics of PBT‐GF30 suitable for laser welding, supported by a numerical analysis. This process allowed to determine the influence of thermal energy on the behavior of the material and thus fully understand the mechanical response of the material after laser welding. Testing of the PBT GF30 in the as received state confirmed a fusion temperature of 225°C and large energy absorption for wavelengths around 1000 nm. Exposure to large temperatures leads to increased fiber exposure and matrix degradation, with a deleterious effect on the mechanical properties. When treated at the highest temperature under consideration, the material exhibited a reduction of 66% in its ultimate tensile stress, 67% in the yield at failure, 45% in the Young's modulus and 44% in the stress intensity factor. Hardness was less affected by the temperature increase. From the numerical model for the tensile and the compact tension tests, it was possible to find a good degree of convergence. This material was generally found suitable for laser welding processes and the determined useful to support the modeling the behavior of laser welded joints.

show abstract

Numerical Analysis of the Damage Evolution of DP600 Steel Using Gurson–Tvergaard–Needleman Model

Yildiz

2022

steel research int.

View full text Add to dashboard Cite

Ductile fracture is commonly considered as a mechanical response of nucleation, growth, and finally, coalescence of voids in metallic alloys induced by plastic deformation. Several micromechanical ductile fracture models and criteria have been developed within the past 50 years. In 1968, McClintock [1] established ductile fracture criteria for the growth of long cylindrical void under applied stress. Next year, Rice and Tracey [2] analytically modeled the growth of spherical voids in a tension strain field. In both cases, high-stress triaxiality increases the void growth rate exponentially. Later, Gurson [3] developed constitutive equations for porous materials using the upper bound theorem of plasticity. Gurson's yield criteria was based on the assumption of idealization of a single void in a rigid plastic cell (to represent matrix) in which the void volume fraction was defined as "f ". Similarly, Rousselier [4] proposed a macroscopic approach to predict ductile damage using the continuum thermodynamics. Also, Lemaitre [5] put forth a model for ductile fracture in the framework of thermodynamics: effective elasticity modulus, which decreases with an increase in the damage.Chu and Needleman [6] published a void nucleation model employing Gurson's yield criteria. Next, Tvergaard [7,8] conducted a bifurcation analysis on the shear band instabilities and void coalescence in localized shear bands in a continuum model with a void-matrix aggregate proposed by Gurson. Later, Tvergaard and Needleman [9] carried out a finite element analysis for the coalescence of voids and introduced a modification to the yield condition. After the modifications to Gurson's constitutive equations, the model is called as "GTN model" and enabled to predict ductile damage in metals. Researchers have carried out numerous studies to model ductile fracture for different applications, including tensile testing, [10][11][12][13][14][15] formability limit diagrams, [16][17][18][19][20] small punch tests, [21][22][23] electromagnetic impaction, [24] Charpy V-notch test, [25,26] bending, [27][28][29] tube hydroforming, [30,31] roll forming. [32] The constitutive equations of the GTN damage model require nine different parameters. In the literature, scholars determined these parameters with different methods for various materials. Ali and Huang [33] utilized a statistical approach, response surface methodology (RSM), to estimate damage for AZ61 Mg alloy. They coupled a finite element model (FEM), which is developed in ANSYS and evaluated the response of each variable on the regression model coefficients. Their approximation algorithm compared the results of each increment with the experimentally obtained tensile test results that initially start with the literature values for different materials, including steel, titanium, and aluminum alloys. Similarly, Abbasi and colleagues [34] determined GTN model parameters by RSM for the tailor-welded monolithic interstitial free (IF)-steel blanks. They compared the results of FEM, which was constructed on the...

show abstract

Application of a GTN Damage Model Predicting the Fracture of 5052-O Aluminum Alloy High-Speed Electromagnetic Impaction

Cited by 19 publications

References 34 publications

Simulation of Sheet Metal Forming Processes Using a Fully Rheological-Damage Constitutive Model Coupling and a Specific 3D Remeshing Method

Simulation of Sheet Metal Forming Processes Using a Fully Rheological-Damage Constitutive Model Coupling and a Specific 3D Remeshing Method

Study of the optical, thermal, morphological and mechanical characteristics of a laser weldable fiber reinforced polymer

Numerical Analysis of the Damage Evolution of DP600 Steel Using Gurson–Tvergaard–Needleman Model

Contact Info

Product

Resources

About