Fracture Mechanics of Piezoelectric Solids with Interface Cracks - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Fracture Mechanics of Piezoelectric Solids with Interface Cracks write by Volodymyr Govorukha. This book was released on 2017-03-14. Fracture Mechanics of Piezoelectric Solids with Interface Cracks available in PDF, EPUB and Kindle. This book provides a comprehensive study of cracks situated at the interface of two piezoelectric materials. It discusses different electric boundary conditions along the crack faces, in particular the cases of electrically permeable, impermeable, partially permeable, and conducting cracks. The book also elaborates on a new technique for the determination of electromechanical fields at the tips of interface cracks in finite sized piezoceramic bodies of arbitrary shape under different load types. It solves scientific problems of solid mechanics in connection with the investigation of electromechanical fields in piezoceramic bodies with interface cracks, and develops calculation models and solution methods for plane fracture mechanical problems for piecewise homogeneous piezoceramic bodies with cracks at the interfaces. It discusses the “open” crack model, which leads to a physically unrealistic oscillating singularity at the crack tips, and the contact zone model for in-plane straight interface cracks between two dissimilar piezoelectric materials. It also investigates the model of a crack with electro-mechanical pre-fracture zones. The formulated problems are reduced to problems of linear relationship, which correspond to different crack models, and their exact analytical solutions are found. The book presents in detail the expressions for stress and electric displacement intensity factors, as well as for the energy release rate. The influence of the electric permittivity of the crack, the mechanical load and the electric field upon the electro-elastic state, as well as the main fracture mechanical parameters, are analyzed and clearly illustrated. This book addresses postgraduate students, university teachers and researchers dealing with the problems of fracture mechanics of piezoelectric materials, as well as engineers who are active in the analysis of strength and durability of piezoelectric constructions.
Fracture Mechanics of Piezoelectric and Ferroelectric Solids
Fracture Mechanics of Piezoelectric and Ferroelectric Solids - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Fracture Mechanics of Piezoelectric and Ferroelectric Solids write by Daining Fang. This book was released on 2014-12-12. Fracture Mechanics of Piezoelectric and Ferroelectric Solids available in PDF, EPUB and Kindle. Fracture Mechanics of Piezoelectric and Ferroelectric Solids presents a systematic and comprehensive coverage of the fracture mechanics of piezoelectric/ferroelectric materials, which includes the theoretical analysis, numerical computations and experimental observations. The main emphasis is placed on the mechanics description of various crack problems such static, dynamic and interface fractures as well as the physical explanations for the mechanism of electrically induced fracture. The book is intended for postgraduate students, researchers and engineers in the fields of solid mechanics, applied physics, material science and mechanical engineering. Dr. Daining Fang is a professor at the School of Aerospace, Tsinghua University, China; Dr. Jinxi Liu is a professor at the Department of Engineering Mechanics, Shijiazhuang Railway Institute, China.
Fracture Mechanics of Electrically Passive and Active Composites with Periodic Cracking along the Interface
Fracture Mechanics of Electrically Passive and Active Composites with Periodic Cracking along the Interface - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Fracture Mechanics of Electrically Passive and Active Composites with Periodic Cracking along the Interface write by Sergey Kozinov. This book was released on 2020-03-21. Fracture Mechanics of Electrically Passive and Active Composites with Periodic Cracking along the Interface available in PDF, EPUB and Kindle. This book offers a comprehensive and timely review of the fracture behavior of bimaterial composites consisting of periodically connected components, i.e. of bimaterial composites possessing periodical cracks along the interface. It first presents an overview of the literature, and then analyzes the isotropic, anisotropic and piezoelectric/dielectric properties of bimaterial components, gradually increasing the difficulty of the solutions discussed up to the coupled electromechanical problems. While in the case of isotropic and anisotropic materials it covers the problems generated by an arbitrary set of cracks, for the piezoelectric materials it focuses on studying the influence of the electric permittivity of the crack’s filler, using not only a simple, fully electrically permeable model, but also a physically realistic, semi-permeable model. Throughout the analyses, the effects of the contact of the crack faces are taken into account so as to exclude the physically unrealistic interpenetration of the composite components that are typical of the classical open model. Further, the book derives and examines the mechanical and electromechanical fields, stress and electric intensity factors in detail. Providing extensive information on the fracture processes taking place in composite materials, the book helps readers become familiar with mathematical methods of complex function theory for obtaining exact analytical solutions.
Fracture Mechanics of Piezoelectric Materials
Fracture Mechanics of Piezoelectric Materials - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Fracture Mechanics of Piezoelectric Materials write by Qing-Hua Qin. This book was released on 2001. Fracture Mechanics of Piezoelectric Materials available in PDF, EPUB and Kindle. Written with the aim of encouraging further development of the fracture mechanics of coupled thermo-electro-elastic problems, this monograph examines crack problems in piezoelectric materials. Emphasis is placed on fundamental concepts, the development of mathematical models and their computational solutions. The methods are described and derived in a way which makes them more accessible to postgraduate students, research scientists and engineers.
A Theoretical Study of Fracture of Piezoelectric Solids
A Theoretical Study of Fracture of Piezoelectric Solids - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook A Theoretical Study of Fracture of Piezoelectric Solids write by . This book was released on 2001. A Theoretical Study of Fracture of Piezoelectric Solids available in PDF, EPUB and Kindle. This thesis presents a theoretical study of fracture mechanics of piezoelectric materials. Based on the literature review, a selected set of basic problems related to linear fracture mechanics of plane piezoelectric media are examined. A comprehensive study of a plane piezoelectric medium with an arbitrarily oriented elliptical void and a straight crack is presented first. A set of complete analytical solutions for electroelastic fields around the void and at the crack tip are derived for different types of electric boundary conditions. It is found that solutions based on the special cases of defect orientation, i.e. defects parallel or perpendicular to the poling direction, cannot be always considered as the critical case. It is shown that the Hao and Shen type electric boundary conditions reduce to impermeable or permeable boundary conditions under practical situations. The branched cracks are then studied as the logical extension of straight cracks. It is found that branch closure happens for certain cases of branch length, branch angle and loading condition. It is shown that the asymptotic electroelastic fields at a branch tip have complex dependence on branch length, branch angle, crack orientation and the type of loading. The influence of applied electric loading is found to be more complicated and significant than mechanical loading. The issue of fracture criteria is examined next. A new stress-based criterion and two energy-based criteria are proposed to predict crack propagation in piezoelectrics. The criteria of modified hoop stress intensity factor and modified strain energy release rate suggest that, even in a symmetric case (loading and geometry), a crack may branch off from a straight path, which qualitatively agrees with available experimental findings. Finally, a general method of obtaining electroelastic singularities in piezoelectric wedges and composite piezoelectric wedges/junctions is successfully developed as a precursor to the study of fractur.
