Discrete Element Modeling of the Seismic Behavior of Masonry Construction

Lemos, José V.

doi:10.3390/buildings9020043

“…As for the DEM and contrary to the Finite Element (FE) micro-models, the DECM does not require definition of joints or interface elements, but uses a point contact approach. Compared to the use of joints or interface elements, the point contact approach is more versatile and facilitates the analysis in the large displacement range [76]. In fact, it allows taking into account the variations in the connectivity of the system in large displacements, periodically updating the type, location, and orientation of contacts.…”

Section: Basic Principles Of the Discrete Elements Cell Methods (Decm)mentioning

confidence: 99%

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

Ferretti¹

2020

Preprint

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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.

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“…As for the DEM and contrary to the Finite Element (FE) micro-models, the DECM does not require definition of joints or interface elements, but uses a point contact approach. Compared to the use of joints or interface elements, the point contact approach is more versatile and facilitates the analysis in the large displacement range [75]. In fact, it allows taking into account the system connectivity changes in large displacements, updating the type, location, and orientation of contacts periodically.…”

Section: Basic Principles Of the Discrete Elements Cell Methods (Decm)mentioning

confidence: 99%

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

Ferretti¹

2020

Preprint

2

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

“…As for the DEM and contrary to the Finite Element (FE) micro-models, the DECM does not require definition of joints or interface elements, but uses a point contact approach. Compared to the use of joints or interface elements, the point contact approach is more versatile and facilitates the analysis in the large displacement range [55]. In fact, it allows taking into account the system connectivity changes in large displacements, updating the type, location, and orientation of contacts periodically.…”

Section: Basic Principles Of the Discrete Elements Cell Methods (Decm)mentioning

confidence: 99%

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

Ferretti¹

2019

Preprint

0

View full text Add to dashboard Cite

This paper deals with a DEM (Discrete Element Method) approach of the Cell Method (CM), useful for providing a multiscale modeling of composite materials. The new numerical model, called DECM, 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 a continuum, 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

Discrete Element Modeling of the Seismic Behavior of Masonry Construction

Cited by 83 publications

References 24 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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