A failure mechanics and strength optimization study for patched laminates

Kussmaul, Ralph; Zogg, Markus; Ermanni, Paolo

doi:10.1016/j.compstruct.2019.111165

Cited by 5 publications

(5 citation statements)

References 19 publications

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“…For a regularly staggered composite, three failure mode coexist: 15,35 (1) Fibre failure occurs when the longitudinal stress in a ply exceeds tensile strength X T . In the case of N ply composite, neglecting stress concentrations and induced flexion, the fibre failure strength of the composite is expressed by the following relationship:…”

Section: Numerical Modelmentioning

confidence: 99%

“…Several works show that the slenderness and the arrangement of the reinforcements have a high influence on the properties of the composite. 31–33 Finite Elements (FE)+cohesive zone model approaches allow testing random 34 or regular optimized 15 architectures. For example, Kussmaul et al investigate the failure of unidirectional patched laminates and assess the influence of governing design parameters on their strength by nonlinear FE analyses.…”

Section: Introductionmentioning

confidence: 99%

“…13,14 Regularly disposed slits are introduced into each ply, using an automatic cutting machine 6 or a laser beam. 10 Similar architectures can be created by using fibre patch placement 15 or by using an automated tape-laying machine. 9 The second class of manufacturing processes is based on the alignment of dry discontinuous fibres.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Kussmaul et al investigate the failure of unidirectional patched laminates and assess the influence of governing design parameters on their strength by nonlinear FE analyses. 15 Pimenta et al use a model with a generic interface law (plasticity, damage) and apply it to a regular pattern. 35 This model is successfully confronted with experimental tests of 8 where prepreg plies are cut and arranged in a brick and mortar pattern.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Influence of the architecture on the strength of a unidirectional composite with recycled discontinuous fibres

Shi,

Gillet,

Mantaux

et al. 2023

Journal of Composite Materials

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Recycled fibre composites are made of discontinuous fibres that are not of the same length. Their mechanical behaviour depends on the load transfer between fibres and in particular on the overlaps between fibres of different lengths. The objective of the study is to show the influence of the architecture on the failure of a discontinuous reinforcement composite. A numerical model was developed to simulate different overlap lengths between fibres. The influence of defects, in this study small overlap length between fibres, and of their distribution in the architecture, was thus highlighted. Experimental tests allowed to validate the model. The model makes it possible to calculate a critical overlap length, length from which the composite strength reaches its maximum. In particular, simulations showed that discontinuous fibre architectures with small overlap lengths at the edge strongly decrease the strength of the composite. On the contrary, defects in the core of the architecture are tolerable. These results open perspectives for the choice of architectures based on recycled fibre in order to optimize the final properties of the composite.

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Section: Numerical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of the architecture on the strength of a unidirectional composite with recycled discontinuous fibres

Shi,

Gillet,

Mantaux

et al. 2023

Journal of Composite Materials

View full text Add to dashboard Cite

show abstract

“…The commonly used methods are genetic algorithm (GA), 20 evolutionary algorithm (EA), 21 particle swarm algorithm 22 and surrogate‐based optimization 23 . During the optimization process of tapered CFRP structures, the lay‐up continuity 24 and the location of sub‐area layers 25 should be additionally considered. Some methods are introduced to solve this problem, including stacking sequence table‐based EA, 26 backtracking method, 27 ant colony system, 28 global shared‐layer blending, 29 and three‐phase design optimization process 30 from the concept design to the final detailed one.…”

Section: Introductionmentioning

confidence: 99%

Design and optimization of tapered carbon‐fiber‐reinforced polymer rim for carbon/aluminum assembled wheel

Wang

et al. 2020

Polymer Composites

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A multi‐objective integrated optimization framework that considers the manufacturing process in the design of a tapered carbon‐fiber‐reinforced polymer (CFRP) rim structure was established. Firstly, the three‐zone symmetrically stacked CFRP rim structure was proposed and modeled. The bending and radial fatigue and 13° impact of the carbon/aluminum‐assembled wheel composed of CFRP rim and aluminum alloy spoke were analysed. Coupling lay‐up thickness, sequence and angle as design variables, multi‐objective integrated optimization design for the tapered CFRP rim structure was performed through radial basis function neural network surrogate model combined with an elitist non‐dominated sorting genetic algorithm approach. Pareto‐optimal solutions were obtained, and the trade‐off solution was selected through grey relational analysis coupled with entropy weighting method. Finally, the tapered CFRP rim was manufactured through molding and autoclave forming technology. The CFRP rim has a weight saving of 17.2% compared with the previously developed forged magnesium alloy rim of the same size. The bending and radial fatigue and 13° impact performance of the assembled wheel were then validated by corresponding physical test, results of which met GB 36581‐2018 standard.

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A novel computational framework for structural optimization with patched laminates

Kussmaul

Jónasson

Zogg

et al. 2019

Struct Multidisc Optim

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A failure mechanics and strength optimization study for patched laminates

Cited by 5 publications

References 19 publications

Influence of the architecture on the strength of a unidirectional composite with recycled discontinuous fibres

Influence of the architecture on the strength of a unidirectional composite with recycled discontinuous fibres

Design and optimization of tapered carbon‐fiber‐reinforced polymer rim for carbon/aluminum assembled wheel

A novel computational framework for structural optimization with patched laminates

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