Modeling of oblique penetration into geologic targets using cavity expansion penetrator loading with target free-surface effects
A procedure has been developed to represent the loading on a penetrator and its motion during oblique penetration into geologic media. The penetrator is modeled with the explicit dynamics, finite element computer program PRONTO 3D and the coupled pressure on the penetrator is given in a new loading...
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2017
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| Online Access: | http://hdl.handle.net/10725/5982 http://dx.doi.org/10.2172/7224 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://www.osti.gov/scitech/biblio/7224 |
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| _version_ | 1864513478237093888 |
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| author | Tabbara, Mazen R. |
| author2 | Jung, Joe Longcope, Donald B. |
| author2_role | author author |
| author_facet | Tabbara, Mazen R. Jung, Joe Longcope, Donald B. |
| author_role | author |
| dc.creator.none.fl_str_mv | Tabbara, Mazen R. Jung, Joe Longcope, Donald B. |
| dc.date.none.fl_str_mv | 2017-07-31T08:45:07Z 2017-07-31T08:45:07Z 2017-04-11 |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10725/5982 http://dx.doi.org/10.2172/7224 Jung, J., Longcope, D. B., & Tabbara, M. R. (1999). Modeling of Oblique Penetration into Geologic Targets Using Cavity Expansion Penetrator Loading with Target free-Surface Effects (No. SAND99-1104). Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA. http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://www.osti.gov/scitech/biblio/7224 |
| dc.language.none.fl_str_mv | en |
| dc.publisher.none.fl_str_mv | Scitech Connect |
| dc.rights.*.fl_str_mv | info:eu-repo/semantics/openAccess |
| dc.title.none.fl_str_mv | Modeling of oblique penetration into geologic targets using cavity expansion penetrator loading with target free-surface effects |
| dc.type.none.fl_str_mv | Conference Paper / Proceeding info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/conferenceObject |
| description | A procedure has been developed to represent the loading on a penetrator and its motion during oblique penetration into geologic media. The penetrator is modeled with the explicit dynamics, finite element computer program PRONTO 3D and the coupled pressure on the penetrator is given in a new loading option based on a separate cavity expansion (CE) solution that accounts for the pressure reduction from a nearby target free surface. The free-surface influence distance is selected in a predictive manner by considering the pressure to expand a spherical cavity in a finite radius sphere of the target material. The CE/PRONTO 3D procedure allows a detailed description of the penetrator for predicting shock environments or structural failure during the entire penetra- tion event and is sufficiently rapid to be used in design optimization. It has been evaluated by comparing its results with data from two field tests of a full-scale penetrator into frozen soil at an impact angles of 49.6 and 52.5 degrees from the horizontal. The measured penetrator rotations were 24 and 22 degrees, respectively. In the simulation, the rotation was 21 degrees and predom- inately resulted from the pressure reduction of the free surface. Good agreement was also found for the penetration depth and axial and lateral acceleration at two locations in the penetrator. |
| eu_rights_str_mv | openAccess |
| format | conferenceObject |
| id | LAURepo_3877fa288cd46c6334dc452a9765742e |
| identifier_str_mv | Jung, J., Longcope, D. B., & Tabbara, M. R. (1999). Modeling of Oblique Penetration into Geologic Targets Using Cavity Expansion Penetrator Loading with Target free-Surface Effects (No. SAND99-1104). Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA. |
| language_invalid_str_mv | en |
| network_acronym_str | LAURepo |
| network_name_str | Lebanese American University repository |
| oai_identifier_str | oai:laur.lau.edu.lb:10725/5982 |
| publishDate | 2017 |
| publisher.none.fl_str_mv | Scitech Connect |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | Modeling of oblique penetration into geologic targets using cavity expansion penetrator loading with target free-surface effectsTabbara, Mazen R.Jung, JoeLongcope, Donald B.A procedure has been developed to represent the loading on a penetrator and its motion during oblique penetration into geologic media. The penetrator is modeled with the explicit dynamics, finite element computer program PRONTO 3D and the coupled pressure on the penetrator is given in a new loading option based on a separate cavity expansion (CE) solution that accounts for the pressure reduction from a nearby target free surface. The free-surface influence distance is selected in a predictive manner by considering the pressure to expand a spherical cavity in a finite radius sphere of the target material. The CE/PRONTO 3D procedure allows a detailed description of the penetrator for predicting shock environments or structural failure during the entire penetra- tion event and is sufficiently rapid to be used in design optimization. It has been evaluated by comparing its results with data from two field tests of a full-scale penetrator into frozen soil at an impact angles of 49.6 and 52.5 degrees from the horizontal. The measured penetrator rotations were 24 and 22 degrees, respectively. In the simulation, the rotation was 21 degrees and predom- inately resulted from the pressure reduction of the free surface. Good agreement was also found for the penetration depth and axial and lateral acceleration at two locations in the penetrator.N/AScitech Connect2017-07-31T08:45:07Z2017-07-31T08:45:07Z2017-04-11Conference Paper / Proceedinginfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://hdl.handle.net/10725/5982http://dx.doi.org/10.2172/7224Jung, J., Longcope, D. B., & Tabbara, M. R. (1999). Modeling of Oblique Penetration into Geologic Targets Using Cavity Expansion Penetrator Loading with Target free-Surface Effects (No. SAND99-1104). Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA.http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.phphttps://www.osti.gov/scitech/biblio/7224eninfo:eu-repo/semantics/openAccessoai:laur.lau.edu.lb:10725/59822021-03-19T10:00:49Z |
| spellingShingle | Modeling of oblique penetration into geologic targets using cavity expansion penetrator loading with target free-surface effects Tabbara, Mazen R. |
| status_str | publishedVersion |
| title | Modeling of oblique penetration into geologic targets using cavity expansion penetrator loading with target free-surface effects |
| title_full | Modeling of oblique penetration into geologic targets using cavity expansion penetrator loading with target free-surface effects |
| title_fullStr | Modeling of oblique penetration into geologic targets using cavity expansion penetrator loading with target free-surface effects |
| title_full_unstemmed | Modeling of oblique penetration into geologic targets using cavity expansion penetrator loading with target free-surface effects |
| title_short | Modeling of oblique penetration into geologic targets using cavity expansion penetrator loading with target free-surface effects |
| title_sort | Modeling of oblique penetration into geologic targets using cavity expansion penetrator loading with target free-surface effects |
| url | http://hdl.handle.net/10725/5982 http://dx.doi.org/10.2172/7224 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://www.osti.gov/scitech/biblio/7224 |