Scalable computations in penetration mechanics

Kimsey, Kent D.; Schraml, Stephen J.; Hertel, Eugene S.

doi:10.1016/s0965-9978(97)00084-7

Cited by 8 publications

(8 citation statements)

References 6 publications

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“…Execution of the CTH hydrocode can be run in single-processor mode or single program multiple data (SPMD) multi-processor mode with explicit message passing [17]. Message passing between processors is implemented by a single layer of 'ghost cells' surrounding each computational subdomain (see Fig.…”

Section: Article In Pressmentioning

confidence: 99%

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Modeling non-eroding perforation of an oblique aluminum target using the Eulerian CTH hydrocode

Scheffler

2005

International Journal of Impact Engineering

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Section: Article In Pressmentioning

confidence: 99%

“…Decomposition of the global computational domain into subdomains with explicit message passing via 'ghost cells' (not shown)[17].…”

mentioning

confidence: 99%

Modeling non-eroding perforation of an oblique aluminum target using the Eulerian CTH hydrocode

Scheffler

2005

International Journal of Impact Engineering

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“…A single program multiple data (SPMD) paradigm with explicit message passing between computational subdomains was used to map the global computational domain onto a scalable architecture (Kimsey et al 1998). CTH is a family of computer programs for modeling solid dynamics problems involving shock wave propagation, multiple materials, and large deformations in one, two, and three dimensions.…”

Section: Numerical Modelmentioning

confidence: 99%

Penetration of a Highly Oblique Steel Plate by a Thin Disk

Bruchey¹,

Kimsey²

2002

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Segmented rod penetrator concepts created interest in the ballistic performance of high-density, low length-to-diameter (L/D) ratio penetrators, but there was a lack of data showing the performance of such thin disks vs. high-obliquity targets. An experimental and computational study was conducted to examine the basic case of a single tungsten heavy alloy disk with an L/D of 1/8 impacting a high-obliquity (65°) rolled homogeneous armor steel plate at a nominal velocity of 2 km/s. The study provides valuable insight into the penetration process. Results include depths of penetration and penetration per unit length. Good agreement is seen between the experimental data and the CTH simulation; both show a ricochet phenomenon. Results are also compared to comparable previous studies, and possible explanations for differences are given.u

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“…Scalability trials were conducted using up to 2048 processors and involved the simulation of the yawed, oblique impact of a long rod penetrator with a thin plate. This case has been used in the past as a standard benchmark in assessing the scalability of CTH on many other scalable systems deployed by HPCMP [2,3,4,5,6,7,8]. The scalability of CTH on the Opteron cluster was studied for both fixed and adaptive meshes.…”

Section: Introductionmentioning

confidence: 99%

Simulating the Formation and Evolution of Behind Armor Debris Fields

Schraml¹,

Meyer²,

Kleponis³

et al.

2005 Users Group Conference (DOD-UGC'05)

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Approved for public release; distribution is unlimited.ii REPORT DOCUMENTATION PAGE Form Approved OMB No. 0704-0188Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. REPORT DATE (DD-MM-YYYY)November 2005 ARL-RP-109 SPONSOR/MONITOR'S ACRONYM(S) 9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) SPONSOR/MONITOR'S REPORT NUMBER(S) DISTRIBUTION/AVAILABILITY STATEMENTApproved for public release; distribution is unlimited. SUPPLEMENTARY NOTES ABSTRACTThe performance of the CTH shock physics code was evaluated on the Opteron cluster recently installed at the U.S. Army Research Laboratory (ARL) Major Shared Resource Center. Scalability trials were conducted using up to 2048 processors and involved the simulation of the yawed, oblique impact of a long rod penetrator with a thin plate. The scalability of CTH on the Opteron cluster was studied for both fixed and adaptive meshes. After the scalability study was completed, CTH simulations were conducted to evaluate the potential to use shock physics simulations to augment experimental data in behind armor debris applications. These simulations were conducted for both fixed and adaptive meshes. A variation of a fracture model currently under development at ARL was also evaluated.

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Scalable computations in penetration mechanics

Cited by 8 publications

References 6 publications

Modeling non-eroding perforation of an oblique aluminum target using the Eulerian CTH hydrocode

Modeling non-eroding perforation of an oblique aluminum target using the Eulerian CTH hydrocode

Penetration of a Highly Oblique Steel Plate by a Thin Disk

Simulating the Formation and Evolution of Behind Armor Debris Fields

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