Simulation of Delamination in a Composite Using a Shell-beam Mesoscale Finite Element Model

Marszałek, J.; Stadnicki, Jacek

doi:10.5604/01.3001.0012.1319

Cited by 2 publications

(6 citation statements)

References 15 publications

(21 reference statements)

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“…The criteria were defi ned resulting from three possible basic modes of laminate fracture as a result of initiation of crack between layers, i.e. tension mode, sliding shear mode and scissoring shear mode [18]. Beam element P, in which the threshold value of tensile or shear force was exceeded, was searched and then, depending on the existing fracture mode, removed in one step (tension mode) or its stiffness was reduced similarly to beam elements R (sliding and scissoring shear mode).…”

Section: Strength Assessment With Reference To Delamination Of An Exe...mentioning

confidence: 99%

“…Beam element P, in which the threshold value of tensile or shear force was exceeded, was searched and then, depending on the existing fracture mode, removed in one step (tension mode) or its stiffness was reduced similarly to beam elements R (sliding and scissoring shear mode). The method of determining the threshold values of tensile and shear forces for beam elements P for three fracture modes is presented in work [18]. The task was to carry out simulation of experimental tests of delamination of pre-delaminated specimens of laminate in the conditions of the following tests: DCB (double cantilever beam), ENF (end notched fl exure) and MECT (modifi ed edge crack torsion).…”

Section: Strength Assessment With Reference To Delamination Of An Exe...mentioning

confidence: 99%

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Durability Assessment of Composite Structural Element Reinforced with Fabric due to Delamination

Marszałek

Stadnicki

2020

Autex Research Journal

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AbstractLayer composites reinforced with fabrics – laminates are construction materials in which mechanical properties can be shaped by designing their microstructure appropriately. However, the multi-phase microstructure of laminates makes it difficult to calculate the strength of the laminate constructions, especially when the reinforcement is a fabric. The article presents a special calculation model for determining the strength of an exemplary construction element made of laminate reinforced with a roving fabric with a plain weave made of carbon fibers. The computational model reflected in a simplified way the laminate microstructure, i.e. the number and orientation of the reinforcement fabric layers and its weave, and enabled a simulation of the behavior of the construction element under load up to fracture, which occurred as a result of breaking the reinforcement and interlayer crack – delamination. The simulation results were compared with the results of experimental stand tests. A method of modifying the computational model for laminates reinforced with non-plain weave was also suggested.

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Section: Strength Assessment With Reference To Delamination Of An Exe...mentioning

confidence: 99%

Section: Strength Assessment With Reference To Delamination Of An Exe...mentioning

confidence: 99%

Durability Assessment of Composite Structural Element Reinforced with Fabric due to Delamination

Marszałek

Stadnicki

2020

Autex Research Journal

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“…The description of the method of determining the limit values of forces in the beam elements binding the laminate layers for three basic crack modes, i.e. opening, sliding shear and scissoring shear, and the description of the method of simulating delamination were described in detail in [15].…”

Section: Idea Of Ruc To Mesoscale Model Of Laminatementioning

confidence: 99%

“…During the simulation, in each step, the values of forces in beam elements P (Figure 2) binding the laminate layers were checked and compared with the limit values. If they were exceeded, the cross-sections of beam elements P were reduced to finally remove them completely [15]. In this way a simulation was carried out of initiation and propagation of interlayer cracks leading to delamination.…”

Section: Verification Of the Model On The Example Of A Real Constructmentioning

confidence: 99%

“…In turn, work [14] presents a mesoscale model composed of RUCs made of shell and beam finite elements, which was used in the bending simulation of a composite beam of the reinforcement of a passenger car door. In the simulation of door beam failure as a result of delamination, the procedure of removing finite elements modeling interlayer bonding was used, which eliminated the need to predict the potential crack sites [15]. The analysis of the simulation results showed very good compliance of the model with the results of experimental tests.…”

Section: Introductionmentioning

confidence: 99%

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Finite element model of laminate construction element with multi-phase microstructure

Marszałek

Stadnicki

Danielczyk

2020

Science and Engineering of Composite Materials

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The article describes a method of creating a mesoscale finite element model of a fabric reinforced laminate that replicates the smallest repetitive fragment of its microstructure – RUC (Repetitive Unit Cell). The model takes into account the influence of the number and orientation of layers, the weave of the reinforcement fabric as well as manufacturing technology on the strength and stiffness of the laminate. The constants of the finite elements forming RUC (equivalent cross-sectional parameters, limit values of forces ensuring layer integrity) are determined experimentally by performing uncomplicated tests of specimens of a particular laminate. A special preprocessor was developed to generate the finite element model of the construction element from laminate, which automatically creates the so-called batch file defining the model. The usefulness of the preprocessor was checked by simulating a three-point bending test of a laminate door beam of a passenger car. The obtained calculation results were verified experimentally.

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Simulation of Delamination in a Composite Using a Shell-beam Mesoscale Finite Element Model

Abstract: aaa

Cited by 2 publications

References 15 publications

Durability Assessment of Composite Structural Element Reinforced with Fabric due to Delamination

Durability Assessment of Composite Structural Element Reinforced with Fabric due to Delamination

Finite element model of laminate construction element with multi-phase microstructure

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