Dynamics of FractureSpringer Science & Business Media, 5 июн. 2013 г. - Всего страниц: 98 In this book a new phenomenological approach to brittle medium fracture initiation under shock pulses is developped. It provides an opportunity to estimate fracture of media with and without macrodefects. A qualitative explanation is thus obtained for a number of principally important effects of high-speed dynamic fracture that cannot be clarified within the framework of previous approaches. It is possible to apply this new strategy to resolve applied problems of disintegration, erosion, and dynamic strength determination of structural materials. Specialists can use the methods described to determine critical characteristics of dynamic strength and optimal effective fracture conditions for rigid bodies. This book can also be used as a special educational course on deformation of materials and constructions, and fracture mechanics. |
Содержание
| 1 | |
Effects of HighRate Fracture of Brittle Materials | 16 |
Some NonClassical Approaches New Criterion | 24 |
Intact Fracture | 39 |
Stress Fields in Problems of Dynamic Fracture | 52 |
Dynamic Fracture Near the Crack Tip | 61 |
Determination of Fracture Direction | 74 |
On Material Yield Modeling under HighRate | 84 |
References | 91 |
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according applied stress asymptotic solution birefringence brittle fracture calculated caustic characteristics classical approach cleavage computed constant corresponding crack faces crack tip critical stress criterion critical value curve deformation determined dimension domain dynamic branch dynamic fracture viscosity dynamic loading dynamic strength effect elastic epoxide erosion fracture experimental data experiments formula fracture analysis fracture criterion fracture mechanics fracture occurs fracture structural function Heaviside function high-rate loading high-speed impact velocity incubation initiation intensity factor J. F. Kalthoff Ki(t Lamé constants loading rate macrocrack maximum mode Morozov N.F. Moscow Nauka obtained optical parameters peculiarities Petrov Y. V. photoelastic physical plane presented in Fig problem quasistatic Russian Science Acad singular solid Solid Mechanics specimen static yield stress field stress-intensity factor value structural-temporal criterion temporal dependence temporal strength dependence tensile stress threshold amplitude threshold pulses tinc transverse waves wave yield criterion yield point yield stress zone