The numerical simulation of ceramic composites failure at axial compression
Journal Title: Frattura ed Integrità Strutturale - Year 2013, Vol 7, Issue 24
Abstract
On the basis of the developed model of quasibrittle medium the brittle and quasibrittle failure of composite ceramic materials with zirconium dioxide matrix and various percentage of hardening particles of corundum are studied numerically. The theory of the damaged media is applied in the calculations. It is shown that failure process educes in 2 stages - a relatively slow quasistationary phase of accumulation of inelastic deformations and damages in all hierarchy of scales and superfast catastrophic phase - a blow-up regime when the failure process reaches the macro-scale and there is a macro-crack formation. The failure process in the proposed model assumes to be completed when the damage function reaches its maximum value and the strength of the composite evolve to zero.
Authors and Affiliations
P. V. Makarov, M. O. Eremin
Models of initiation fatigue crack paths proposed by Macha
Professor E. Macha devoted his academic life to solving the problems connected with random multiaxial fatigue in components of machines and structures. In his studies he formulated stress, strain and energy crite...
Pressure vessels design methods using the codes, fracture mechanics and multiaxial fatigue
This paper gives a highlight about pressure vessel (PV) methods of design to initiate new engineers and new researchers to understand the basics and to have a summary about the knowhow of PV design. This understan...
Fatigue failure of welded connections at orthotropic bridges
Orthotropic decks were applied to the long span bridges after World War II due to several advantages, such as light weight, high strength, few deck joints, durability, rapid construction, life-cycle economy. The fatigue...
Finite element modeling and experimental studies on mixed mode-I/III fracture specimens
In this study, finite element modeling and experimental studies on a mode-I/III specimen similar to the compact tension specimen are presented. By using bolts, the specimen is attached to two loading apparatus&nbs...
Fatigue life prediction of casing welded pipes by using the extended finite element method
The extended finite element (XFEM) method has been used to simulate fatigue crack growth in casing pipe, made of API J55 steel by high-frequency welding, in order estimate its structural integrity and life. B...