A progressive analysis of matrix cracking-induced delamination in composite laminates using an advanced phantom node method

Reiner, Johannes; Veidt, Martin; Dargusch, Matthew S.; Gross, Lutz

doi:10.1177/0021998316684203

Cited by 24 publications

(7 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There is vast literature on this subject, and because of this, we will not attempt to discuss all potentially relevant approaches to model fractures in rocks. However, we would like to highlight that in contrast to engineered materials such as composite laminates, realistic modelling of rock fractures on the microscopic scale is difficult to achieve because of the various spatial scales of fractures that are formed in rocks. For this reason, the numerical modelling approach chosen for this paper is a mesoscopic scale model using the concept of damage within a continuum mechanics model.…”

Section: Introductionmentioning

confidence: 99%

Simulating damage evolution and fracture propagation in sandstone containing a preexisting 3‐D surface flaw under uniaxial compression

Mondal

Olsen-Kettle

Gross

2019

Num Anal Meth Geomechanics

Self Cite

View full text Add to dashboard Cite

Summary Preexisting flaws and rock heterogeneity have important ramifications on the process of rock fracturing and on rock stability in many applications. Therefore, there is great interest in numerical modelling of rock fracture and the underlying mechanisms. We simulated damage evolution and fracture propagation in sandstone specimens containing a preexisting 3‐D surface flaw under uniaxial compression. We applied the linear elastic damage model based on the unified strength theory following the rock failure process analysis code. However, in contrast to the rock failure process analysis code, we used the finite element method with tetrahedron elements on unstructured meshes. It provided higher geometrical flexibility and allowed for a more accurate representation of the disk‐shaped flaw with various flaw depths, angles, and lengths through locally adapted meshes. The rock heterogeneity was modelled by sampling the initial local Young's modulus from a Weibull distribution over a cubic grid. The values were then interpolated to the computational finite element method mesh. This method introduced an additional length scale for the rock heterogeneity represented by the cell size in the sampling grid. The generation of three typical surface cracking patterns, called wing cracks, anti‐wing cracks, and far‐field cracks, were identified in the simulation results. These depend on the geometry of the preexisting surface flaw. The simulated fracture propagation, coalescence types, and failure modes for the specimens with preexisting surface flaw show good agreement with recent experimental studies.

show abstract

Section: Introductionmentioning

confidence: 99%

Simulating damage evolution and fracture propagation in sandstone containing a preexisting 3‐D surface flaw under uniaxial compression

Mondal

Olsen-Kettle

Gross

2019

Num Anal Meth Geomechanics

Self Cite

View full text Add to dashboard Cite

show abstract

“…The singularity-based approach by [58] pays special attention to the 3rd additive term of (24), whose specification, namely the reasonable form of F l from both the point of view of physical justification and that of practical reliable setting of selected material parameters, can be derived the detailed analysis of various modes of stress singularities on crack tips following [59]. Unlike this, the phantom node approach by [60] tries to handle cracking using the 2nd additive term of (24) only, which offers a chance to include the cohesive properties of Λ naturally like [61].…”

Section: A Adaptive Discretizationmentioning

confidence: 99%

On a Computational Approach to Micro- and Macro-modelling of Damage in Brittle and Quasi-brittle Materials

Vála

Kozák

Jarošová³

2020

International Journal of Mechanics

View full text Add to dashboard Cite

Computational modelling of damage in brittle and quasi-brittle materials needs some coupling between micro- and macroscopic crack initiation and evolution, up to their non-negligible softening behaviour. Most such approaches contain ad hoc evaluations, with some physical and engineering motivations, namely those connected with massive application of steel fibre-reinforced concrete and similar composites in building projects, but without any proper mathematical existence and convergence analysis for the time development of damage. This paper presents a possibility of such deterministic analysis on a selected model problem of structural dynamics, supplied by comments to useful directions of generalization. Several application examples document the feasibility of such approach, up to its software implementation and real data validation.

show abstract

“…The incorporation of discrete matrix cracks is more challenging as cracks can coalesce or bifurcate in various directions. Therefore, more sophisticated discrete methods have been developed such as the extended finite element method (Moës et al., 1999) or phantom node method (Chen et al., 2014; Reiner, 2016) that can also account for realistic interaction of discrete failure modes (Reiner et al., 2017).…”

Section: Introductionmentioning

confidence: 99%

Deviation-based calibration for progressive damage analysis in pultruded glass fiber reinforced composites

Reiner

2022

International Journal of Damage Mechanics

Self Cite

View full text Add to dashboard Cite

This paper presents a systemic calibration methodology to efficiently simulate progressive damage evolution in four different pultruded glass fiber reinforced polymer (GFRP) composites using the strain-based COMposite DAMage Model (CODAM2) in the commercial finite element software LS-DYNA. In particular, Compact Tension (CT), scaled-up CT, and wide CT tests are simulated to find the best set of input parameters by considering four distinct indicators obtained from experimental and numerical load vs displacement data. By combining these indicators into a physically meaningful equivalent deviation value via a linear weighted-sum method, the results show that the most suited input damage variables yield physically accurate crack length predictions which underlines the robustness and accuracy of the proposed method. Furthermore, it is shown that the incorporation of bi-linear softening laws improves CODAM2 simulation results by up to 90%, however it also increases the number of parameters to be calibrated.

show abstract

A progressive analysis of matrix cracking-induced delamination in composite laminates using an advanced phantom node method

Cited by 24 publications

References 52 publications

Simulating damage evolution and fracture propagation in sandstone containing a preexisting 3‐D surface flaw under uniaxial compression

Simulating damage evolution and fracture propagation in sandstone containing a preexisting 3‐D surface flaw under uniaxial compression

On a Computational Approach to Micro- and Macro-modelling of Damage in Brittle and Quasi-brittle Materials

Deviation-based calibration for progressive damage analysis in pultruded glass fiber reinforced composites

Contact Info

Product

Resources

About