Material Damage Models for Creep Failure Analysis and Design of Structures

Skrzypek, Jacek

doi:10.1007/978-3-7091-2506-9_3

Cited by 11 publications

(5 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are numerous models describing the inelastic strain behaviour that have been outlined in Skrzypek 30 and Lee and Kim. 31 The term damage can be specified to designate some amount of degradation of performance that eventually leads to failure of structure.…”

Section: Resultsmentioning

confidence: 99%

A multi-level damage and creep behaviour of material subjected to high pressure: metal versus composite – A micromechanics approach

Kathavate¹,

Pawar²,

Adkine³

2017

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

This current study reports on multi-level damage and creep behaviour of metal and composite material under external high pressure using finite element concept. A fatigue damage model with microcracks with improper interface has been portrayed in the present investigation. In addition, the overall elastic properties and damage evaluation are also studied and comparative study of mechanical properties has been outlined. Further thermo-elastic creep response of materials based on Norton’s law is also presented. The results showed that the proposed nonlinear constitutive model and overall elastic damage behaviour of composite material are in agreement. Implemented nonlinear constitutive model is secured by comparing predicted stress–strain curves with experimental data available in the past literature under uniaxial tension. The time-dependent behaviour creep stresses and displacements are studied and plotted. The analysis provides significant new insights of micromechanical damage, creep and collapse behaviour of composite material. For the structural composites, some notable techniques have been developed over the past three decades; review of these techniques is also outlined here in this paper and state of art is established together with insights for upcoming development.

show abstract

Section: Resultsmentioning

confidence: 99%

A multi-level damage and creep behaviour of material subjected to high pressure: metal versus composite – A micromechanics approach

Kathavate¹,

Pawar²,

Adkine³

2017

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…Within continuum damage mechanics, anisotropic damage can conveniently be reflected by using as variables second-order damage tensors Continuum Damage Models based on Energy Equivalence: Part II (see Skrzypek (1999); Chaboche (1999) and the literature cited there). Accordingly, we amplify the set of variables in the previous sections by adding the symmetric second-order damage tensor D. Let D i , i ¼ 1, 2, 3 be the eigenvalues of D. In the undamaged state D ¼ 0.…”

Section: Coupling With Damage -Energy Equivalence Principlementioning

confidence: 99%

“…When assigning effective counterparts to second-order tensorial variables, like the stress tensor, a common method in continuum damage mechanics is to employ so-called damage effect tensors (cf. e.g., Skrzypek (1999) and Chaboche (1999)). These are functions of D, and represent regular fourth-order tensors, which act on the tensorial state variable to generate the effective one.…”

Section: Energy Equivalence Principlementioning

confidence: 99%

Continuum Damage Models based on Energy Equivalence: Part II — Anisotropic Material Response

Grammenoudis

Reckwerth

Tsakmakis

2008

International Journal of Damage Mechanics

View full text Add to dashboard Cite

Anisotropic viscoplasticity coupled with anisotropic damage is modeled in a thermodynamically consistent way. Isotropic and kinematic hardening are present in the viscoplasticity part of the model and the evolution equations for the hardening variables incorporate both, static and dynamic recovery terms. Damage effects are captured in the framework of the concept of effective stress and effective strain combined with the principle of energy equivalence as adopted in Part I. The theory is employed to determine stress distributions for a single-crystal superalloy under complex loading histories. The results are compared with experimental measurements in order to examine the capabilities of the proposed theory.

show abstract

“…For the general case of continuously changing principal stress directions, the rotation of principal stresses must be taken into account when applying the damage growth equation. Skrzypek [25] proposed the following form for an objective damage rate tensor, d 9 :…”

Section: Damage Growthmentioning

confidence: 99%

Modelling Damage Growth and Failure in Elastic Materials With Random Defect Distributions

Lennon¹,

Prendergast²

2004

Mathematical Proceedings of the Royal Irish Academy

View full text Add to dashboard Cite

Failure in materials under cyclic loading occurs by the growth and propagation of cracks. If they are sufficiently numerous, the cracks can be considered to be continuously distributed in the material. In this paper, a mathematical model is proposed to predict failure in materials with defects in the form of randomly distributed pores. The model includes anisotropic damage accumulation, the effects of crack closure and the coupling of elasticity with damage. Defects are modelled as pre-existing isotropic damage. A numerical implementation of the model is used to predict failure in specimens with both high and low defect densities, under a cyclical load. Comparison of the predicted failure time with the experimental values shows that the approach captures the variability found in the failure of the specimens. Therefore the model provides a computational scheme that can be used to predict the variability in the failure of load-bearing structures operating under cyclical loads.

show abstract

Material Damage Models for Creep Failure Analysis and Design of Structures

Cited by 11 publications

References 59 publications

A multi-level damage and creep behaviour of material subjected to high pressure: metal versus composite – A micromechanics approach

A multi-level damage and creep behaviour of material subjected to high pressure: metal versus composite – A micromechanics approach

Continuum Damage Models based on Energy Equivalence: Part II — Anisotropic Material Response

Modelling Damage Growth and Failure in Elastic Materials With Random Defect Distributions

Contact Info

Product

Resources

About