The predictive capability of failure mode concept-based strength criteria for multidirectional laminates

Cuntze, R.; Freund, A.

doi:10.1016/b978-008044475-8/50018-4

Cited by 34 publications

(42 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Failure criteria were ranked in a number of different categories, including prediction accuracy, data-fitting 780 requirement level, and generality. A notable out-come of the WWFE has been the identification of five "promising" failure prediction outcomes: Puck [152], Cuntze [153] and Tsai [49]. Two further exercises have been organised since.…”

Section: World-wide Failure Exercisesmentioning

confidence: 99%

State of the art in fatigue modelling of composite wind turbine blades

Rubiella

Hessabi

Fallah

2018

International Journal of Fatigue

View full text Add to dashboard Cite

This paper provides a literature review of the most notable models relevant to the evaluation of the fatigue response of composite wind turbine blades. As wind turbines spread worldwide, ongoing research to maximize their lifetime -and particularly that of wind turbine blades -has increasingly popularized the use of composite materials, which boast attractive mechanical properties. The review first presents the wind turbine blade environment, before distributing fatigue models broadly between three categories: life-based failure criterion models, which are based on S-N curve formulations and constant-life diagrams to introduce failure criteria; residual property calculation models, which evaluate the gradual degradation of material properties; and progressive damage models, which model fatigue via the cycle-by-cycle growth of one or more damage parameters. These are then linked to current testing standards, databases, and experimental campaigns. Among the fatigue modeling approaches covered, progressive damage models appear to be the most promising tool, as they both quantify and qualify physical damage growth to a reasonable extent during fatigue. The lack of consensus and shortcomings of literature are also discussed, with abundant referencing.This review aims to provide an overview of the current methods, in comparison to the other ones and most prominent theories, through a critical viewpoint, so as to be constructive and conclusive. Despite the fact that the fatigue behaviour of metals are already well-developed and validated, their "conventional" fatigue models may not be applied to composites due to their high anisotropic and heterogeneous behaviour.The underlying aim is to identify new paths for future improvements and shed light on the most ambiguous 40 aspects of composite fatigue research, particularly in the evolving case of wind turbine applications. 70 account for such effects, as we shall see.As wind turbines increase in size, the edgewise fatigue loading becomes increasingly relevant for life prediction, as shown by Kensche [7]. In addition, the torsional eigenfrequency drops, with a risk that it may couple with lower bending modes, with disastrous consequences. Toward the trailing and leading edge of the blade structure, gravity increasingly dominates the stress and strains applied to the load-bearing structure in the 75 rotor plane. An alternating, cyclic stress emerges as a result, with mean stress almost null. Furthermore,

show abstract

Section: World-wide Failure Exercisesmentioning

confidence: 99%

State of the art in fatigue modelling of composite wind turbine blades

Rubiella

Hessabi

Fallah

2018

International Journal of Fatigue

View full text Add to dashboard Cite

show abstract

“…To finally give an answer to the raised question, the calculated stresses have to be transformed to a material adapted coordinate system (Figure 14) and afterwards can be used, for instance as input for so-called physically based failure criteria according to Puck 27,28 or Cuntze, 29 respectively, and under the additional consideration of the so-called microsupport effect according to Neuber. 30 The evaluation and development of such new failure criteria for notched multilayered composites is currently one of the focal points of ongoing research work at the ILK.…”

Section: Comparison Of Analytically Calculated As Well As Numericallymentioning

confidence: 99%

Calculation method for the determination of stress concentrations in fibre-reinforced multilayered composites due to metallic interference-fit bolt

Grüber

Gude

Hoyer

et al. 2017

Journal of Composite Materials

View full text Add to dashboard Cite

Sophisticated analytical solution methods for the stress concentration problem in multilayered composites with interference-fit bolts have been developed on the basis of layer-related solutions. The model is based on a circular or elliptical isotropic bolt integrated in a fibre- or textile-reinforced multilayered composite plate. For the simulation of the interference between bolt and composite plate a modelling strategy has been proposed featuring the application of a defined temperature load to a metallic elastic inclusion. For analysing the stress concentration effects in the surrounding plate, complex-valued displacement functions in combination with the method of conformal mappings for the interface between inclusion and plate and a combination of boundary collocation and least squares method for the outer boundary are used. For the verification of the developed calculation methods, a number of experimental and numerical studies have been carried out and the decay behaviour of the distortions have been compared for different radians. For all combinations of multilayered composite plate and interference-fit bolt investigated so far, a good correlation of the analytically calculated and the numerically determined results can be observed.

show abstract

“…1a) compares experimentally observed shear stress vs. shear strain behaviour with the GMC-model predictions using parameters identified by hand. The experimental result is taken from [1].…”

Section: Numerical Examplesmentioning

confidence: 99%

Two‐scale simulation of damage in unidirectionally fibre reinforced composite materials

Koester

Matzenmiller

2007

Proc Appl Math and Mech

View full text Add to dashboard Cite

The finite element analysis of engineering structures usually assumes a homogeneous as well as a continuous medium. The heterogeneity of matter, which is always found on a sufficiently small length scale is neglected by replacing the inhomogeneous medium through a model of a mathematically homogenized material. The macroscopic constitutive behaviour is derived from volume averaging procedures that smear the microscopic heterogeneities.

show abstract

The predictive capability of failure mode concept-based strength criteria for multidirectional laminates

Cited by 34 publications

References 19 publications

State of the art in fatigue modelling of composite wind turbine blades

State of the art in fatigue modelling of composite wind turbine blades

Calculation method for the determination of stress concentrations in fibre-reinforced multilayered composites due to metallic interference-fit bolt

Two‐scale simulation of damage in unidirectionally fibre reinforced composite materials

Contact Info

Product

Resources

About