Practical Aspects of Numerical Simulations of Dynamic Events: Material Interfaces
The use of finite-difference and finite-element computer codes to solve problems involving fast, transient loading is commonplace. A large number of commercial codes exist and are applied to problems ranging from fairly low to extremely high damage levels (e.g., design of containment structures to m...
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creator | Scheffler, Daniel R Zukas, Jonas A |
description | The use of finite-difference and finite-element computer codes to solve problems involving fast, transient loading is commonplace. A large number of commercial codes exist and are applied to problems ranging from fairly low to extremely high damage levels (e.g., design of containment structures to mitigate effects of industrial accidents; protection of buildings and people from blast and impact loading; foreign-object impact damage; design of space structures to withstand impacts of small particles moving at hypervelocity, a case where pressures generated exceed the material strength by an order of magnitude). But, what happens if code predictions do not correspond with reality? This report discusses various factors related to material interfaces in Lagrangian and Eulerian shock wave propagation codes (hydrocodes), which can lead to disagreement between computations and experience. Companion reports focus on problems associated with meshing and constitutive models and the use of material data at strain rates inappropriate to the problem. This report is limited to problems involving fast, transient loading, which can be addressed by commercial finite-difference and finite-element codes.
Prepared in collaboration with Computational Mechanics Consultants Inc., Baltimore, MD. |
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Prepared in collaboration with Computational Mechanics Consultants Inc., Baltimore, MD.</description><language>eng</language><subject>ACCIDENTS ; BLAST ; BUILDINGS ; COMPUTERIZED SIMULATION ; CONTAINMENT(GENERAL) ; DAMAGE ASSESSMENT ; DYNAMIC LOADS ; EULER EQUATIONS ; FINITE DIFFERENCE THEORY ; FINITE ELEMENT ANALYSIS ; FOREIGN OBJECT DAMAGE ; HYDRODYNAMIC CODES ; IMPACT LOADS ; LAGRANGIAN FUNCTIONS ; MATHEMATICAL PREDICTION ; Mechanics ; Numerical Mathematics ; PE62261A ; SHOCK WAVES ; SPACE SYSTEMS ; STRAIN RATE ; STRUCTURAL MECHANICS</subject><creationdate>2000</creationdate><rights>APPROVED FOR PUBLIC RELEASE</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,776,881,27544,27545</link.rule.ids><linktorsrc>$$Uhttps://apps.dtic.mil/sti/citations/ADA384161$$EView_record_in_DTIC$$FView_record_in_$$GDTIC$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Scheffler, Daniel R</creatorcontrib><creatorcontrib>Zukas, Jonas A</creatorcontrib><creatorcontrib>ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE</creatorcontrib><title>Practical Aspects of Numerical Simulations of Dynamic Events: Material Interfaces</title><description>The use of finite-difference and finite-element computer codes to solve problems involving fast, transient loading is commonplace. A large number of commercial codes exist and are applied to problems ranging from fairly low to extremely high damage levels (e.g., design of containment structures to mitigate effects of industrial accidents; protection of buildings and people from blast and impact loading; foreign-object impact damage; design of space structures to withstand impacts of small particles moving at hypervelocity, a case where pressures generated exceed the material strength by an order of magnitude). But, what happens if code predictions do not correspond with reality? This report discusses various factors related to material interfaces in Lagrangian and Eulerian shock wave propagation codes (hydrocodes), which can lead to disagreement between computations and experience. Companion reports focus on problems associated with meshing and constitutive models and the use of material data at strain rates inappropriate to the problem. This report is limited to problems involving fast, transient loading, which can be addressed by commercial finite-difference and finite-element codes.
Prepared in collaboration with Computational Mechanics Consultants Inc., Baltimore, MD.</description><subject>ACCIDENTS</subject><subject>BLAST</subject><subject>BUILDINGS</subject><subject>COMPUTERIZED SIMULATION</subject><subject>CONTAINMENT(GENERAL)</subject><subject>DAMAGE ASSESSMENT</subject><subject>DYNAMIC LOADS</subject><subject>EULER EQUATIONS</subject><subject>FINITE DIFFERENCE THEORY</subject><subject>FINITE ELEMENT ANALYSIS</subject><subject>FOREIGN OBJECT DAMAGE</subject><subject>HYDRODYNAMIC CODES</subject><subject>IMPACT LOADS</subject><subject>LAGRANGIAN FUNCTIONS</subject><subject>MATHEMATICAL PREDICTION</subject><subject>Mechanics</subject><subject>Numerical Mathematics</subject><subject>PE62261A</subject><subject>SHOCK WAVES</subject><subject>SPACE SYSTEMS</subject><subject>STRAIN RATE</subject><subject>STRUCTURAL MECHANICS</subject><fulltext>true</fulltext><rsrctype>report</rsrctype><creationdate>2000</creationdate><recordtype>report</recordtype><sourceid>1RU</sourceid><recordid>eNrjZAgMKEpMLslMTsxRcCwuSE0uKVbIT1PwK81NLQILBmfmluYklmTm54ElXCrzEnMzkxVcy1LzSoqtFHwTS4AKgeo884CMtMTk1GIeBta0xJziVF4ozc0g4-Ya4uyhmwK0Jr64JDMvtSTe0cXR2MLE0MzQmIA0AIAxNHE</recordid><startdate>200009</startdate><enddate>200009</enddate><creator>Scheffler, Daniel R</creator><creator>Zukas, Jonas A</creator><scope>1RU</scope><scope>BHM</scope></search><sort><creationdate>200009</creationdate><title>Practical Aspects of Numerical Simulations of Dynamic Events: Material Interfaces</title><author>Scheffler, Daniel R ; Zukas, Jonas A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-dtic_stinet_ADA3841613</frbrgroupid><rsrctype>reports</rsrctype><prefilter>reports</prefilter><language>eng</language><creationdate>2000</creationdate><topic>ACCIDENTS</topic><topic>BLAST</topic><topic>BUILDINGS</topic><topic>COMPUTERIZED SIMULATION</topic><topic>CONTAINMENT(GENERAL)</topic><topic>DAMAGE ASSESSMENT</topic><topic>DYNAMIC LOADS</topic><topic>EULER EQUATIONS</topic><topic>FINITE DIFFERENCE THEORY</topic><topic>FINITE ELEMENT ANALYSIS</topic><topic>FOREIGN OBJECT DAMAGE</topic><topic>HYDRODYNAMIC CODES</topic><topic>IMPACT LOADS</topic><topic>LAGRANGIAN FUNCTIONS</topic><topic>MATHEMATICAL PREDICTION</topic><topic>Mechanics</topic><topic>Numerical Mathematics</topic><topic>PE62261A</topic><topic>SHOCK WAVES</topic><topic>SPACE SYSTEMS</topic><topic>STRAIN RATE</topic><topic>STRUCTURAL MECHANICS</topic><toplevel>online_resources</toplevel><creatorcontrib>Scheffler, Daniel R</creatorcontrib><creatorcontrib>Zukas, Jonas A</creatorcontrib><creatorcontrib>ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE</creatorcontrib><collection>DTIC Technical Reports</collection><collection>DTIC STINET</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Scheffler, Daniel R</au><au>Zukas, Jonas A</au><aucorp>ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE</aucorp><format>book</format><genre>unknown</genre><ristype>RPRT</ristype><btitle>Practical Aspects of Numerical Simulations of Dynamic Events: Material Interfaces</btitle><date>2000-09</date><risdate>2000</risdate><abstract>The use of finite-difference and finite-element computer codes to solve problems involving fast, transient loading is commonplace. A large number of commercial codes exist and are applied to problems ranging from fairly low to extremely high damage levels (e.g., design of containment structures to mitigate effects of industrial accidents; protection of buildings and people from blast and impact loading; foreign-object impact damage; design of space structures to withstand impacts of small particles moving at hypervelocity, a case where pressures generated exceed the material strength by an order of magnitude). But, what happens if code predictions do not correspond with reality? This report discusses various factors related to material interfaces in Lagrangian and Eulerian shock wave propagation codes (hydrocodes), which can lead to disagreement between computations and experience. Companion reports focus on problems associated with meshing and constitutive models and the use of material data at strain rates inappropriate to the problem. This report is limited to problems involving fast, transient loading, which can be addressed by commercial finite-difference and finite-element codes.
Prepared in collaboration with Computational Mechanics Consultants Inc., Baltimore, MD.</abstract><oa>free_for_read</oa></addata></record> |
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source | DTIC Technical Reports |
subjects | ACCIDENTS BLAST BUILDINGS COMPUTERIZED SIMULATION CONTAINMENT(GENERAL) DAMAGE ASSESSMENT DYNAMIC LOADS EULER EQUATIONS FINITE DIFFERENCE THEORY FINITE ELEMENT ANALYSIS FOREIGN OBJECT DAMAGE HYDRODYNAMIC CODES IMPACT LOADS LAGRANGIAN FUNCTIONS MATHEMATICAL PREDICTION Mechanics Numerical Mathematics PE62261A SHOCK WAVES SPACE SYSTEMS STRAIN RATE STRUCTURAL MECHANICS |
title | Practical Aspects of Numerical Simulations of Dynamic Events: Material Interfaces |
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