Dynamic Fracture Mechanics

Freund, L. B.

doi:10.1017/cbo9780511546761

Cited by 1,354 publications

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“…It must be evaluated through the solution of a corresponding elasto dynamic problem with the dynamic fracture energy of the material, G c , which depends on the crack velocity, i.e. [1]:…”

Section: Introductionmentioning

confidence: 99%

Crack-front propagation during three-point-bending tests of polymethyl-methacrylate beams

Loya¹,

Villa²,

Fernández-Sáez³

2010

Polymer Testing

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a b s t r a c tCrack front evolution in polymethyl methacrylate (PMMA) beams was measured during quasi static three point bending tests performed on a universal testing machine. A high speed camera was used to record the crack front propagation process through the specimen thickness and to determine the instantaneous crack length during the test, considering the effect of different initial notch lengths and loading point displacement rates. The average steady crack propagation speed was also calculated and correlated with the stored elastic energy, and these results have been compared with those reported by other authors for different test conditions. This experimental technique appears to be suitable to determine the influence of the test conditions on the crack propagation speed of PMMA specimens.

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“…It must be evaluated through the solution of a corresponding elasto dynamic problem with the dynamic fracture energy of the material, G c , which depends on the crack velocity, i.e. [1]:…”

Section: Introductionmentioning

confidence: 99%

Crack-front propagation during three-point-bending tests of polymethyl-methacrylate beams

Loya¹,

Villa²,

Fernández-Sáez³

2010

Polymer Testing

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“…Another approach assumes that the cohesive stress zone moves behind a moving crack tip at a rupture velocity V R . A term proportional to V R occurs only in the latter approach (see, for instance, Eq.5.3.16 in Freund, 1990).…”

Section: A3 Supplementary Assumptionsmentioning

confidence: 99%

Apparent stress scaling for tectonic and induced seismicity: Model and observations

Senatorski¹

2008

Physics of the Earth and Planetary Interiors

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To cite this version:Piotr Senatorski. Apparent stress scaling for tectonic and induced seismicity: Model and observations. Physics of the Earth and Planetary Interiors, Elsevier, 2008, 167 (1-2) This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.Page 1 it is related to the rupture initiation, propagation and arrest conditions; therefore, it reflects earthquake rupture dynamics. Additional shiftings among the trend lines obtained for the smallest induced tremors, larger tectonic earthquakes, and slow tsunami earthquakes, reflect differences between the intact rock failure and the frictional slip failure, that is, between fracture energies of these different earthquake classes.

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“…The considered problems are confined in the anti-plane. The anti-plane equation of motion for an orthotropic anisotropic body is given by (Eringer, 1975;Sih, 1977a;Erdogan, 1968;Cherepanov, 1979;Kostrov, 1964;Freund, 1998): Statics problems of anti-plane shear loading were researched very much (Eringer, 1975;Sih, 1977a;Erdogan, 1968) in the past of several decades. Dynamic problem is an important research field in modern fracture mechanics.…”

Section: Introductionmentioning

confidence: 99%

“…Dynamic problem is an important research field in modern fracture mechanics. Due to the interaction of the stress waves under complex dynamic loading cases, the theory of dynamic fracture mechanics is still innovated and developed (Cherepanov, 1979;Sih, 1968;Freund, 1998). However, a lot of engineering structures are under the conditions of dynamic loadings and the static theory can't effectually III resolve a series of dynamic queries, so it is indispensable to study the fracture dynamics problems (Sih, 1968;Kostrov, 1964;Freund, 1998;Sih and MacDonald, 1974;Srolovitz and Source, 1997).…”

Section: Introductionmentioning

confidence: 99%

Dynamic Propagation Problems of Mode Iii Semi-Infinite Crack

Nian-Chun¹

2013

American Journal of Engineering and Applied Sciences

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By means of the theory of complex functions, dynamic propagation problems of mode III semi-infinite crack were researched. The problems studied can be facilely transformed into riemann-hilbert problems and the universal expression of analytical solutions of stress, displacement and dynamic stress intensity factor under the conditions of moving increasing loads Px/t and Pt 2 /x, respectively, are very facilely obtained using the measures of self-similar functions. In view of corresponding material properties, the mutative rule of dynamic stress intensity factor was illuminated very well.

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Dynamic Fracture Mechanics

Cited by 1,354 publications

References 0 publications

Crack-front propagation during three-point-bending tests of polymethyl-methacrylate beams

Crack-front propagation during three-point-bending tests of polymethyl-methacrylate beams

Apparent stress scaling for tectonic and induced seismicity: Model and observations

Dynamic Propagation Problems of Mode Iii Semi-Infinite Crack

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