✦ LIBER ✦

Assessing plastically dissipated energy as a condition for fatigue crack growth

✍ Scribed by D. Cojocaru; A.M. Karlsson

Publisher: Elsevier Science
Year: 2009
Tongue: English
Weight: 829 KB
Volume: 31
Category: Article
ISSN: 0142-1123
DOI: 10.1016/j.ijfatigue.2008.12.009

No coin nor oath required. For personal study only.

✦ Synopsis

The suitability of using a proposed condition for simulating cyclic crack propagation in a numerical scheme is qualitatively investigated, employing the finite element method. The propagation criterion is based on a condition that relates the plastically dissipated energy to a critical value. In the finite element simulation scheme, the crack is allowed to propagate when the criterion is satisfied, and the crack propagates until the condition is no longer fulfilled. Experimentally, it is well established that a negative load ratio increases the crack propagation rate, whereas a tensile overload tends to decrease the crack propagation rate. By simulating these load conditions, we show that the proposed propagation criterion closely captures these rate changes.

📜 SIMILAR VOLUMES

An energy dissipation analysis for a tra

An energy dissipation analysis for a transitional model of crack tip plasticity

✍ David J. Unger 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 418 KB

Akatraet-An exact relationship is obtained for the rate of energy dissipation due to plastic work for a transition model of mode III crack propagation. It is found that the rate of energy dissipation increases monotonically as the transition in plastic zone shape changes from the inBnite&nally-thin

A comparison between Japanese and French

A comparison between Japanese and French A16 defect assessment procedures for thermal fatigue crack growth

✍ T. Wakai; M. Horikiri; C. Poussard; B. Drubay 📂 Article 📅 2005 🏛 Elsevier Science 🌐 English ⚖ 176 KB

A mixed augmented Lagrangian-extended fi

A mixed augmented Lagrangian-extended finite element method for modelling elastic–plastic fatigue crack growth with unilateral contact

✍ T. Elguedj; A. Gravouil; A. Combescure 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 784 KB

## Abstract The complete modelling of fatigue crack growth is still an industrial challenging issue for numerical methods. A new technique for the finite element modelling of elastic–plastic fatigue crack growth with unilateral contact on the crack faces is presented. The extended finite element me

A probabilistic assessment of the primar

A probabilistic assessment of the primary coolant loop pipe fracture due to fatigue crack growth for a PWR plant

✍ C.K. Chou 📂 Article 📅 1982 🏛 Elsevier Science 🌐 English ⚖ 278 KB

An engineering model for low cycle fatig

An engineering model for low cycle fatigue life based on a partition of energy and micro-crack growth

✍ V. Maurel; L. Rémy; F. Dahmen; N. Haddar 📂 Article 📅 2009 🏛 Elsevier Science 🌐 English ⚖ 713 KB

This paper gives some experimental results of low cycle crack growth from artificial through notch in tubular cylindrical specimens of a ferritic stainless steel. Tests were carried out in symmetric tension compression at 300 °C. Tomkins model often used for LCF tests under significant plasticity co

Three-dimensional finite element analysi

Three-dimensional finite element analysis using crystal plasticity for a parameter study of microstructurally small fatigue crack growth in a AA7075 aluminum alloy

✍ L. Wang; S.R. Daniewicz; M.F. Horstemeyer; S. Sintay; A.D. Rollett 📂 Article 📅 2009 🏛 Elsevier Science 🌐 English ⚖ 520 KB

Three-dimensional finite element analysis using a crystal plasticity constitutive theory was performed to understand and quantify various parametric effects on microstructurally small fatigue crack growth in a AA7075 aluminum alloy. Plasticity-induced crack opening stresses (S o /S max ) were comput