Matches in SemOpenAlex for { <https://semopenalex.org/work/W3186643838> ?p ?o ?g. }
Showing items 1 to 80 of
80
with 100 items per page.
- W3186643838 endingPage "083105-14" @default.
- W3186643838 startingPage "083105-1" @default.
- W3186643838 abstract "Cavities and crack defects usually coexist in deep earth rock mass structures, which together affect the structural safety and stability of rock masses. In order to study the effect of circular cavity on crack propagation behavior in rock mass under dynamic loads, circular opening specimens with straight crack cavity (COSSCC) specimen were proposed in this study, and a large-scale drop hammer impact device was applied to conduct impact tests. Crack propagation gauges were implemented to measure fracture mechanics parameters, such as dynamic crack initiation time and crack propagation velocity. Then a modified finite difference code Autodyn was applied to carry out the numerical simulation analysis of crack propagation path and stress field around the circular hole. The traditional finite element code Abaqus was also used to calculate the dynamic initiation toughness and dynamic propagation toughness. The results indicate that: (1) when the inclination θ of the circle hole is less than 10°, the crack propagation path deflects and passes through the surface of the circle hole; when the inclination θ of circle hole is 20° and 30°, the crack propagation paths deflects in the direction of the hole but does not pass through the circular hole, indicating that the circular hole has obvious guiding effect on crack propagation; when the inclination θ of circle hole is 40° and 50°, crack propagation path does not deflect, and the guiding effect of the circular hole is obvious weaken. (2) When the crack propagation path reaches the vicinity of the circular hole, the tensile stress zone at the crack tip coincides with the tensile stress zone at the edge of the circular hole. At this time, the crack propagation speed increases significantly, and the dynamic fracture toughness of the crack decreases significantly. (3) The deflection direction of the crack is basically the same as the direction of the maximum circumferential stress at the crack tip. (4) The dynamic fracture toughness of the crack is always smaller than the crack initiation toughness, and the dynamic fracture toughness of the crack has a linear relationship with the dynamic crack growth rate. The larger the dynamic crack growth rate, the smaller the dynamic fracture toughness of the crack." @default.
- W3186643838 created "2021-08-02" @default.
- W3186643838 creator A5011397715 @default.
- W3186643838 creator A5015738468 @default.
- W3186643838 creator A5023985273 @default.
- W3186643838 creator A5034325525 @default.
- W3186643838 creator A5036479910 @default.
- W3186643838 creator A5064503570 @default.
- W3186643838 date "2021-08-05" @default.
- W3186643838 modified "2023-09-23" @default.
- W3186643838 title "Influence of circular hole defect on dynamic crack propagation behavior under impact loads" @default.
- W3186643838 doi "https://doi.org/10.11883/bzycj-2021-0062" @default.
- W3186643838 hasPublicationYear "2021" @default.
- W3186643838 type Work @default.
- W3186643838 sameAs 3186643838 @default.
- W3186643838 citedByCount "0" @default.
- W3186643838 crossrefType "journal-article" @default.
- W3186643838 hasAuthorship W3186643838A5011397715 @default.
- W3186643838 hasAuthorship W3186643838A5015738468 @default.
- W3186643838 hasAuthorship W3186643838A5023985273 @default.
- W3186643838 hasAuthorship W3186643838A5034325525 @default.
- W3186643838 hasAuthorship W3186643838A5036479910 @default.
- W3186643838 hasAuthorship W3186643838A5064503570 @default.
- W3186643838 hasConcept C101386981 @default.
- W3186643838 hasConcept C121332964 @default.
- W3186643838 hasConcept C127413603 @default.
- W3186643838 hasConcept C135628077 @default.
- W3186643838 hasConcept C159985019 @default.
- W3186643838 hasConcept C192562407 @default.
- W3186643838 hasConcept C28539199 @default.
- W3186643838 hasConcept C51830879 @default.
- W3186643838 hasConcept C57879066 @default.
- W3186643838 hasConcept C59085676 @default.
- W3186643838 hasConcept C66938386 @default.
- W3186643838 hasConcept C75512024 @default.
- W3186643838 hasConcept C97549433 @default.
- W3186643838 hasConceptScore W3186643838C101386981 @default.
- W3186643838 hasConceptScore W3186643838C121332964 @default.
- W3186643838 hasConceptScore W3186643838C127413603 @default.
- W3186643838 hasConceptScore W3186643838C135628077 @default.
- W3186643838 hasConceptScore W3186643838C159985019 @default.
- W3186643838 hasConceptScore W3186643838C192562407 @default.
- W3186643838 hasConceptScore W3186643838C28539199 @default.
- W3186643838 hasConceptScore W3186643838C51830879 @default.
- W3186643838 hasConceptScore W3186643838C57879066 @default.
- W3186643838 hasConceptScore W3186643838C59085676 @default.
- W3186643838 hasConceptScore W3186643838C66938386 @default.
- W3186643838 hasConceptScore W3186643838C75512024 @default.
- W3186643838 hasConceptScore W3186643838C97549433 @default.
- W3186643838 hasIssue "8" @default.
- W3186643838 hasLocation W31866438381 @default.
- W3186643838 hasOpenAccess W3186643838 @default.
- W3186643838 hasPrimaryLocation W31866438381 @default.
- W3186643838 hasRelatedWork W1493759941 @default.
- W3186643838 hasRelatedWork W1547141443 @default.
- W3186643838 hasRelatedWork W1970364427 @default.
- W3186643838 hasRelatedWork W1991882993 @default.
- W3186643838 hasRelatedWork W2007163026 @default.
- W3186643838 hasRelatedWork W2024612704 @default.
- W3186643838 hasRelatedWork W2077533560 @default.
- W3186643838 hasRelatedWork W2133778420 @default.
- W3186643838 hasRelatedWork W2161347616 @default.
- W3186643838 hasRelatedWork W2770073624 @default.
- W3186643838 hasRelatedWork W2779137609 @default.
- W3186643838 hasRelatedWork W2946542457 @default.
- W3186643838 hasRelatedWork W3004736142 @default.
- W3186643838 hasRelatedWork W3092269417 @default.
- W3186643838 hasRelatedWork W3139919810 @default.
- W3186643838 hasRelatedWork W3173530535 @default.
- W3186643838 hasRelatedWork W3197406173 @default.
- W3186643838 hasRelatedWork W847397693 @default.
- W3186643838 hasRelatedWork W848736177 @default.
- W3186643838 hasRelatedWork W1614335422 @default.
- W3186643838 hasVolume "41" @default.
- W3186643838 isParatext "false" @default.
- W3186643838 isRetracted "false" @default.
- W3186643838 magId "3186643838" @default.
- W3186643838 workType "article" @default.