Multiscale Modeling of Composite Materials with DECM Approach: Shape Effect of Inclusions

Ferretti, Elena

doi:10.20944/preprints202001.0246.v1

“…Further improvements of the DECM code presented in this paper consist of the analysis of the stress field for composite continua with randomly shaped inclusions [107] and/or randomly distributed inclusions. The code structure also allows the substitution of the solid inclusions with straight cracks that form a random angle with the x-axis .…”

Section: Future Developmentsmentioning

confidence: 99%

DECM: A Discrete Element for Multiscale Modeling of Composite Materials Using the Cell Method

Ferretti

¹

2020

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This paper presents a new numerical method for multiscale modeling of composite materials. The new numerical model, called DECM, consists of a DEM (Discrete Element Method) approach of the Cell Method (CM) and combines the main features of both the DEM and the CM. In particular, it offers the same degree of detail as the CM, on the microscale, and manages the discrete elements individually such as the DEM—allowing finite displacements and rotations—on the macroscale. Moreover, the DECM is able to activate crack propagation until complete detachment and automatically recognizes new contacts. Unlike other DEM approaches for modeling failure mechanisms in continuous media, the DECM does not require prior knowledge of the failure position. Furthermore, the DECM solves the problems in the space domain directly. Therefore, it does not require any dynamic relaxation techniques to obtain the static solution. For the sake of example, the paper shows the results offered by the DECM for axial and shear loading of a composite two-dimensional domain with periodic round inclusions. The paper also offers some insights into how the inclusions modify the stress field in composite continua.

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“…• Shape of the inclusion (no inclusion, round inclusion, polygonal inclusion with randomly generated shape [107], or straight crack that form a random angle with the -axis x );…”

Section: Comparison With the Results Of A Previous CM Analysismentioning

confidence: 99%

DECM: A Discrete Element for Multiscale Modeling of Composite Materials Using the Cell Method

Ferretti¹

2020

Preprint

Self Cite

View full text Add to dashboard Cite

This paper presents a new numerical method for multiscale modeling of composite materials. The new numerical model, called DECM, consists in a DEM (Discrete Element Method) approach of the Cell Method (CM) and combines the main features of both the DEM and the CM. In particular, it offers the same degree of detail as the CM, on the microscale, and manages the discrete elements individually such as the DEM—allowing finite displacements and rotations—on the macroscale. Moreover, the DECM is able to activate crack propagation until complete detachment and automatically recognizes new contacts. Unlike other DEM approaches for modeling failure mechanisms in continuous media, the DECM does not require prior knowledge of the failure position. Furthermore, the DECM solves the problems in the space domain directly. Therefore, it does not require any dynamic relaxation techniques to obtain the static solution. For the sake of example, the paper shows the results offered by the DECM for axial and shear loading of a composite two-dimensional domain with periodic round inclusions. The paper also offers some insights into how the inclusions modify the stress field in composite continua.

show abstract

“…Further improvements of the DECM code presented in this paper consist in the analysis of the stress field for composite continua with random shaped inclusions [107] and/or randomly distributed inclusions. The code structure also allows the substitution of the solid inclusions with straight cracks that form a random angle with the -axis…”

Section: Future Developmentsmentioning

confidence: 99%

DECM: A Discrete Element for Multiscale Modeling of Composite Materials Using the Cell Method

Ferretti¹

2020

Preprint

Self Cite

0

View full text Add to dashboard Cite

This paper presents a new numerical method for multiscale modeling of composite materials. The new numerical model, called DECM, consists in a DEM (Discrete Element Method) approach of the Cell Method (CM) and combines the main features of both the DEM and the CM. In particular, it offers the same degree of detail as the CM, on the microscale, and manages the discrete elements individually such as the DEM—allowing finite displacements and rotations—on the macroscale. Moreover, the DECM is able to activate crack propagation until complete detachment and automatically recognizes new contacts. Unlike other DEM approaches for modeling failure mechanisms in continuous media, the DECM does not require prior knowledge of the failure position. Furthermore, the DECM solves the problems in the space domain directly. Therefore, it does not require any dynamic relaxation techniques to obtain the static solution. For the sake of example, the paper shows the results offered by the DECM for axial and shear loading of a composite two-dimensional domain with periodic round inclusions. The paper also offers some insights into how the inclusions modify the stress field into composite continua.

show abstract

Multiscale Modeling of Composite Materials with DECM Approach: Shape Effect of Inclusions

Cited by 5 publications

References 20 publications

DECM: A Discrete Element for Multiscale Modeling of Composite Materials Using the Cell Method

DECM: A Discrete Element for Multiscale Modeling of Composite Materials Using the Cell Method

DECM: A Discrete Element for Multiscale Modeling of Composite Materials Using the Cell Method

DECM: A Discrete Element for Multiscale Modeling of Composite Materials Using the Cell Method

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