A virtual testing based search for optimum compression after impact strength in thin laminates using ply-thickness hybridization and unsymmetrical designs

Sasikumar, A.; Costa, J.; Trias, D.; Llobet, J.; Cózar, I.R.; Turón, A.; Linde, Peter

doi:10.1016/j.compscitech.2020.108188

Cited by 8 publications

(2 citation statements)

References 30 publications

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“…In this work, we employ a local damage model based on the constitutive modeling framework for long fiber composite materials proposed by Maimí et al [32,33]. This framework has been used widely in the literature, demonstrating outstanding accuracy and performance not only for static scenarios [11,7,41] but also for impact [17,51,48] and fatigue [26,27].…”

Section: Intralaminar Damage Modelmentioning

confidence: 99%

Application of the partial Dirichlet–Neumann contact algorithm to simulate low-velocity impact events on composite structures

Guillamet

Quintanas-Corominas

Rivero

et al. 2023

Composites Part A: Applied Science and Manufacturing

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Section: Intralaminar Damage Modelmentioning

confidence: 99%

Application of the partial Dirichlet–Neumann contact algorithm to simulate low-velocity impact events on composite structures

Guillamet

Quintanas-Corominas

Rivero

et al. 2023

Composites Part A: Applied Science and Manufacturing

Self Cite

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“…The predictive capability of the model has been demonstrated for various loading cases such as OHT, 8,26 double edged notched tension, 8 impact and compression after impact. 25,[27][28][29] The intralaminar model was implemented in a VUMAT user-written subroutine. An intralaminar element was deleted once the fiber damage variable (d 1 ) reached 1.…”

Section: Open-hole Tension: Numerical Modelmentioning

confidence: 99%

Sensitivity analysis methodology to identify the critical material properties that affect the open hole strength of composites

Sasikumar

Turón

Cózar

et al. 2023

Journal of Composite Materials

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Aeronautical industries are concerned about generating efficient and cost-effective statistical design allowables of composite laminate responses. Within this framework of uncertainty quantification and management (UQ & M), accounting for the various uncertainties is crucial to calculate the design allowables which, in turn, adds confidence to the design and certification process. In this context, as a precursor to UQ & M, we establish a global sensitivity analysis framework to identify the material properties that influence the laminate responses. In this study, an open hole tensile (OHT) test configuration is considered. In a first step, sensitivity analysis based on an analytical model is performed using Sobol, FAST, and Morris methods, whereas in a second step, sensitivity analysis based on a detailed 3D finite element model (FEM) incorporating damage is performed using Morris. The paper compares different sensitivity approaches in terms of computational cost and results. Further, different case studies (varied notched hole sizes, width-to-diameter ratios, laminate stacking sequences, etc.) are performed to study how the sensitive parameters vary for different configurations. The study identified the Morris method, along with the selected hyper parameters, as being suitable for FEM based sensitivity analysis due to its low computational cost. Five material properties (out of 23) were identified as influencing the open hole laminate tensile strength. Using the FE simulations performed for the Morris analysis, a first estimation of the design allowables (A and B basis values) on the OHT strength is also presented. The results from this paper contribute to the next step of UQ&M, where only the identified sensitive material properties can be considered for detailed experimental characterization or for building meta models to calculate the design allowables. A framework like this, complements experimental campaign to reduce the associated costs and knock-down factors, thus shortening the certification process.

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Three notable design strategies for manipulating failure modes in open-hole tensile composite laminates

Yuan

Liu

et al. 2021

Extreme Mechanics Letters

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A virtual testing based search for optimum compression after impact strength in thin laminates using ply-thickness hybridization and unsymmetrical designs

Cited by 8 publications

References 30 publications

Application of the partial Dirichlet–Neumann contact algorithm to simulate low-velocity impact events on composite structures

Application of the partial Dirichlet–Neumann contact algorithm to simulate low-velocity impact events on composite structures

Sensitivity analysis methodology to identify the critical material properties that affect the open hole strength of composites

Three notable design strategies for manipulating failure modes in open-hole tensile composite laminates

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