Abstract
One of the main problems of testing the characteristics of resistant materials in dynamics is the dependence of dynamic strength on the way that the exterior action is applied. This difficulty typically appears under conditions of high-rate loading. In this case, the strength can be interpreted as a critical value of the stress-intensity factor which corresponds to microcracking near the crack tip. The strength can also be interpreted as a dynamic local stress leading to rupture continuum. Both are intensity limits of a local stress field and the fracture occurs when these limits are reached. The dependence of dynamic strength on the method of loading is manifested as critical values during variations of action duration, of amplitude, and of rate of rise of the exterior force. In the case of macrocrack motion initiation, such values will be critical as regards the stress-intensity factor of growth of the macrocrack. During fracture of ‘intact’ solids (i. e., not containing the given macroscopic defects) the local cleavage stress is not determined by a material’s characteristics but as a complex function of loading history.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 2000 Springer-Verlag Berlin Heidelberg
About this chapter
Cite this chapter
Morozov, N., Petrov, Y. (2000). Effects of High-Rate Fracture of Brittle Materials. In: Dynamics of Fracture. Foundations of Engineering Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-69712-1_3
Download citation
DOI: https://doi.org/10.1007/978-3-540-69712-1_3
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-08395-2
Online ISBN: 978-3-540-69712-1
eBook Packages: Springer Book Archive