An adaptive mesh refinement strategy for 3D phase modeling of brittle fracture

Xu, Wenqiang; Jiang, Dongfang; Zhang, Chengpeng; Li, Hanzhang; Qiang, Sheng; Yu, Li; Yuan, Min; Zhang, Caihong

doi:10.1016/j.engfracmech.2023.109241

Cited by 4 publications

(1 citation statement)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A mesh convergence analysis was conducted, and the optimal number of elements and nodes for the entire model were determined to be 990 and 1506, respectively. An adaptive remeshing technique was employed during the simulation to improve model accuracy 24 . The remeshing algorithm was triggered under the indentation area, with a refinement criterion of 0.002 equivalent strain.…”

Section: Finite Element Analysismentioning

confidence: 99%

Experimental characterization and finite element investigation of SiO2 nanoparticles reinforced dental resin composite

Jaleh,

Kashfi,

Feizi Mohazzab

et al. 2024

Sci Rep

View full text Add to dashboard Cite

In this study, a commercial dental resin was reinforced by SiO2 nanoparticles (NPs) with different concentrations to enhance its mechanical functionality. The material characterization and finite element analysis (FEA) have been performed to evaluate the mechanical properties. Wedge indentation and 3-point bending tests were conducted to assess the mechanical behavior of the prepared nanocomposites. The results revealed that the optimal content of NPs was achieved at 1% SiO2, resulting in a 35% increase in the indentation reaction force. Therefore, the sample containing 1% SiO2 NPs was considered for further tests. The morphology of selected sample was examined using field emission scanning electron microscopy (FE-SEM), revealing the homogeneous dispersion of SiO2 NPs with minimal agglomeration. X-ray diffraction (XRD) was employed to investigate the crystalline structure of the selected sample, indicating no change in the dental resin state upon adding SiO2 NPs. In the second part of the study, a novel approach called iterative FEA, supported by the experiment wedge indentation test, was used to determine the mechanical properties of the 1% SiO2-dental resin. Subsequently, the accurately determined material properties were assigned to a dental crown model to virtually investigate its behavior under oblique loading. The virtual test results demonstrated that most microcracks initiated from the top of the crown and extended through its thickness.

show abstract

Section: Finite Element Analysismentioning

confidence: 99%

Experimental characterization and finite element investigation of SiO2 nanoparticles reinforced dental resin composite

Jaleh,

Kashfi,

Feizi Mohazzab

et al. 2024

Sci Rep

View full text Add to dashboard Cite

show abstract

A comprehensive study of the flexural behaviour and damage evolution of composite laminates using a progressive failure model

idrissi

Seddouki

2023

Int J Adv Manuf Technol

View full text Add to dashboard Cite

In this paper, a new progressive damage model has been established with the aim of predicting the exural behaviour and damage evolution of different composite laminates under three-point bending. In this proposed model, a progressive failure algorithm is developed for numerical analyses where the intra/interlaminar failure modes were considered for estimating the damage evolution. A set of gradual stiffness degradation rules were proposed to predict further damage evolution following damage initiation estimated by the combination of the three-dimensional Puck failure criteria and the cohesive zone model. The damage mechanics of composite laminates IMS194/CYCOM977-2 with ply sequence and AS4/PEEK with ply sequence are investigated by our proposed model. In addition, the present model's results were compared with those reported in the literature. Our ndings indicate that the proposed model accurately predicts the failure of laminates, which is bene cial to the study of the damage mechanism of composite laminates.these features are di cult to quantify and may not be possible to identify them at all [1]. The collapse of composite structures is part of a progressive degradation process. Furthermore, it is important to note that local failure causes load redistribution, allowing multiple failure mechanisms to emerge, which diminishes the strength of the composite structure, decreases the capacity of carrying the stress, and ultimately leads to global rupture of the composite. Moreover, it is di cult to accurately represent the stiffness behaviour of a bre carbon-reinforced polymer coupon due to numerous interacting aspects, such as treatment techniques, distribution and arrangement of the bres and matrix. On the other hand, exural testing leads to bene cial mechanical parameters for composite laminates, such as exural modulus and shear stress, as well as a better ability to comprehend and describe the cohesive inter-layer interactions. The advantage of three-point bending tests is that they have advantages in terms of specimen generation, they allow progressive tracking of specimen degradation to nal failure, the location of the failure is foreseeable, and they also allow validation of the strength of composite structures. Once a specimen is subjected to a bending load, the three basic stress states of the material are induced, namely tension, compression and shear. The failure of composite material is controlled mainly by one of the three basic stresses that will be the rst to attain its ultimate value. Parallel to this, previous studies of damage composites under bending load have assumed equal compressive and tensile responses, resulting in over-or underestimation of composite resistance. In order to improve the accuracy of the post-processing analysis and reduce effectively time and costs and exploit fully the pro ts of composite structures under different loads, more credible failure theories and damage propagation approaches are urgently required. M. A. Caminero et al [2]have carried out a three-point bending tes...

show abstract

An adaptive continuous–discontinuous approach for the analysis of phase field fracture using mesh refinement and coarsening schemes and octree-based trimmed hexahedral meshes

Kim,

Kim

2024

Comput Mech

View full text Add to dashboard Cite

An adaptive mesh refinement strategy for 3D phase modeling of brittle fracture

Cited by 4 publications

References 45 publications

Experimental characterization and finite element investigation of SiO2 nanoparticles reinforced dental resin composite

Experimental characterization and finite element investigation of SiO2 nanoparticles reinforced dental resin composite

A comprehensive study of the flexural behaviour and damage evolution of composite laminates using a progressive failure model

An adaptive continuous–discontinuous approach for the analysis of phase field fracture using mesh refinement and coarsening schemes and octree-based trimmed hexahedral meshes

Contact Info

Product

Resources

About