Computational Elastic Analysis of AA7075-O using 3D-Microstructrure-Based-RVE with Really-distributed Particles

Sun, Qingping; Jain, Mukesh

doi:10.1016/j.ijmecsci.2022.107192

Cited by 15 publications

(3 citation statements)

References 80 publications

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“…27,[29][30][31] Because the several parameters in the GTN damage model have physical significance, such as f N to describe the micro void volume fraction at the beginning of nucleation while f c to describe the critical volume fraction for micro void growth and coalescence, 32 the calibration of the parameters considering the anisotropic damage behavior via the XCT method is a further development of the GTN model. The representative volume element (RVE) method, which can represent the 2D view micro voids to 3D spherical morphologies, plays a central role in analyzing the material properties and microstructures 33,34 and provides a new way to calibrate the parameter f F in the GTN damage model for representing the dimples in 2D view as the fractured micro voids in 3D view. The calibration of the GTN damage model based on microstructure characterization is an important work for the development of fracture mechanics.…”

Section: Introductionmentioning

confidence: 99%

Investigation into the anisotropic damage behavior of LA103Z Mg‐Li alloy rolling sheet using X‐ray computed tomography and numerical modeling

Xu,

Qian,

et al. 2023

Fatigue Fract Eng Mat Struct

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The anisotropic damage behavior has a great influence on the formability of rolling sheets. This work aimed to investigate the anisotropic damage mechanism of the LA103Z Mg‐Li alloy rolling sheet by combining mesoscale detection and modeling. The X‐ray computed tomography (XCT) and scanning electron microscope (SEM) were applied to characterize the evolution of damage morphology and volume fraction in RD, DD, and TD directions of the rolling sheet. The GTN damage model was calibrated by the experimental results with the representative volume element (RVE) method. The anisotropic damage mechanism was revealed via experimental and modeling results. The micro void nucleation strain εN was critical to determine the initiation moment of the anisotropic damage. The continuous nucleation in RD direction, the severe growth in DD direction, and the massive coalescence in TD direction were the micro void evolution competition results that caused the anisotropy for damage mechanism and fracture strain.

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Section: Introductionmentioning

confidence: 99%

Investigation into the anisotropic damage behavior of LA103Z Mg‐Li alloy rolling sheet using X‐ray computed tomography and numerical modeling

Xu,

Qian,

et al. 2023

Fatigue Fract Eng Mat Struct

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show abstract

“…On the other hand, the size of RVE is large enough to contain many mesoscopic elements and sufficient mesoscopic structure information at the mesoscopic scale, so it can represent the statistical average properties of a localized continuum [7]. Thus far, there have been a lot of studies on RVEs for composite materials [8][9][10][11][12]. For instance, Zhang et al [8] presented a parameterized and automated modelling method for generating 3D orthogonal woven composite RVE geometry, including yarn geometry variations.…”

Section: Introductionmentioning

confidence: 99%

“…Several complex microstructure features, extracted from real microstructures, have been added to the generator to enable it to generate RVEs with realistic microstructures. Sun et al [10] proposed a novel computationally efficient reconstruction of the 3D microstructure of an RVE model, with a real distribution of particles based on FIB-SEM techniques.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation into the Mechanical Behavior of Composite Solid Propellants Subject to Uniaxial Tension

Wu,

Jiang,

et al. 2023

Materials

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To further explore the quasi-static mechanical characteristics of composite solid propellants at low strain rates, an investigation was conducted on the mechanical behavior and damage mechanisms of a four-component hydroxy-terminated polybutadiene (HTPB) propellant by means of experiments and numerical simulation. A uniaxial tensile test and scanning electron microscope (SEM) characterization experiment were carried out. A microstructural model, which accurately represents the mesoscopic structure, was developed via the integration of micro-CT scanning and image-processing techniques. The constructed microstructural model was utilized to conduct a numerical simulation of the mechanical behavior. The experimental results demonstrated that the maximum tensile strength increases with increasing strain rate, and the primary cause of propellant failure at low strain rates is the dewetting phenomenon occurring at the interface between the larger particles and the matrix. The maximum tensile strength is 0.48 MPa when the strain rate is 0.00119 s−1, and the maximum tensile strength is 0.37 MPa when the strain rate is 0.000119 s−1. The simulation results indicated a consistent trend in variation when comparing the simulation and experimental curves. This suggested that the established model exhibits a high level of reliability, and provides a promising approach for carrying out microstructural simulations of heterogeneous propellants in future. The mechanical behavior of the propellant can be effectively described by utilizing a mesoscopic finite element model that incorporates the superelastic constitutive model of the matrix and the bilinear cohesive model. This framework facilitates the representation of mesoscopic damage evolution, which consequently provides insights into the damage mechanism. Additionally, the utilization of such models assists in compensating for the limitations of damage evolution characterization experiments.

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Finite Element Analysis of Mechanical Behavior for SiC Nanowires Reinforced Al Matrix Composites

Bai,

Xin,

Huang

et al. 2023

Appl Compos Mater

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Computational Elastic Analysis of AA7075-O using 3D-Microstructrure-Based-RVE with Really-distributed Particles

Cited by 15 publications

References 80 publications

Investigation into the anisotropic damage behavior of LA103Z Mg‐Li alloy rolling sheet using X‐ray computed tomography and numerical modeling

Investigation into the anisotropic damage behavior of LA103Z Mg‐Li alloy rolling sheet using X‐ray computed tomography and numerical modeling

Experimental and Numerical Investigation into the Mechanical Behavior of Composite Solid Propellants Subject to Uniaxial Tension

Finite Element Analysis of Mechanical Behavior for SiC Nanowires Reinforced Al Matrix Composites

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