PrePoMaxの使い方 圧力容器の応力解析

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1. 1 PrePoMax ͷ࢖͍ํ ѹྗ༰ثͷԠྗܭࢉ OpenCAE ݚڀձʢJapan OpenCAE Working Groupʣ 2020 ೥ 2 ݄ 1 ೔ ໨࣍ 1 ͸͡Ίʹ 1 2 ղੳํ๏ 2 2.1 ܗঢ়ͷΠϯϙʔτ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.2 ϝογϡͷ࡞੒ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.3 ৚݅ઃఆ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.4 ࡐྉͷઃఆ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.4.1 ࡐྉ෺ੑ஋Λఆٛ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.4.2 ࡐྉΛׂΓ౰ͯ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.5 ղੳ৚݅ͷઃఆ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.6 ղੳͷ࣮ߦ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2.7 ݁Ռͷ֬ೝ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2.7.1 A ఺ɺB ఺ͷ૬౰Ԡྗ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 1 ͸͡Ίʹ ࣍ਤʹࣔ͢Α͏ͳѹྗ༰ثʹ಺ѹ 10MPa ͕͔͔͍ͬͯ·͢ɻ༻͍Δࡐྉ͸ɺ • ࡐྉ໊͸ SB450 • Ϡϯά཰͸ 2.05 ʷ 105MPa • ߱෬Ԡྗ͸ 250MPa ͱ͠ɺA ఺ɺB ఺ͷϛʔθεԠྗΛٻΊ·͢ɻ
2. 2 ղੳํ๏ ਤ 1 ѹྗ༰ث ͜ͷࢿྉ͸ܭࢉํ๏ͷҾ༻ݩϗʔϜϖʔδ಺ʹܝࡌ͞Ε͍ͯΔബ೑ѹ೑ԁ౵ʢPDF ߨٛ഑෍൛ʣΛ ݩʹ PrePoMaxʢCalculixʣ༻ʹ࡞੒ͨ͠΋ͷͰ͢ɻ 2 ղੳํ๏ Ϟσϧ͸ɺ ʮpressure vessel.stpʯΛ࢖͍·͢ɻ ղੳ͸ɺ /Calculix/pressure vessel/ͱ͍͏ϑΥϧμʔΛ࡞Γɺ͜ͷதͰղੳΛߦ͍·͢ɻ PrePoMax Λىಈ͠·͢ɻ 2.1 ܗঢ়ͷΠϯϙʔτ ϝχϡʔόʔΑΓɺ ʮFileʯ ʼ ʮImportʯ Ͱɺ ʮpressure vessel.stpʯ ΛΠϯϙʔτ͠·͢ɻ ʮGeometryʯ λϒͷ Parts ͷԼʹʮSolid Part-1ʯ͕௥Ճ͞Ε·͢ɻ 2
3. 2 ղੳํ๏ 2.2 ϝογϡͷ࡞੒ ਤ 2 ܗঢ়ͷΠϯϙʔτ 2.2 ϝογϡͷ࡞੒ ʮGeometryʯ λϒͷ ʮSolid Part-1ʯ Λબ୒͠ɺ ӈΫϦοΫͰදࣔ͞ΕΔϝχϡʔͷத͔Βɺ ʮMeshing Parametersʯ Λબ୒͠·͢ɻProperties Ͱϝογϡ෼ׂઃఆΛߦ͍·͢ɻ ʮSizeʯ ΑΓ ʮMax element sizeʯͷ஋Λʮ10ʯʹɺ ʮTypeʯΑΓʮSecond orderʯͷ஋ΛʮYesʯʹ͠·͢ɻ ʮOKʯΛΫϦοΫ͠ ͯʮEdit Meshing Parameters:Solid Part-1ʯ΢Οϯυ΢Λด͡·͢ɻ 3
4. 2.2 ϝογϡͷ࡞੒ 2 ղੳํ๏ ਤ 3 Edit Meshing Parameters:Solid Part-1 ʮGeometryʯ λϒͷ ʮSolid Part-1ʯ Λબ୒͠ɺ ӈΫϦοΫͰදࣔ͞ΕΔϝχϡʔͷத͔Βɺ ʮCreate meshʯΛબ୒͠·͢ɻϝογϡ͕࡞੒͞Εɺ ʮFE ModelʯλϒʹҠΓ·͢ɻ࡞੒͞Εͨϝογϡʹ ໰୊͕͋Ε͹ɺ ʮGeometryʯλϒʹ໭Γɺϝογϡ෼ׂઃఆ͔Β΍Γ௚͍ͯͩ͘͠͞ɻ ਤ 4 ϝογϡͷ࡞੒ 4
5. 2 ղੳํ๏ 2.3 ৚݅ઃఆ 2.3 ৚݅ઃఆ ࡞੒͞Εͨϝογϡʹɺՙॏ৚݅༻ɺ߆ଋ৚݅༻ͷ໘άϧʔϓΛ࡞੒͠·͢ɻ ʮFE Modelʯλϒͷ ʮModelʯπϦʔ͔Βɺ ʮSurfacesʯΛબ୒͠ɺӈΫϦοΫͰදࣔ͞ΕΔϝχϡʔͷத͔Βɺ ʮCreateʯ Λબ୒͠·͢ɻProperties ಺ͷʮNameʯΛʮpressʯʹ͠·͢*1ɻ ʮSelect itemsʯͷʮEmptyʯΛબ ୒͠ɺͦͷӈԣʹݱΕΔʮ. . . ʯΛબ୒͠·͢ɻ ਤ 5 Create Surface ʮSet selectionʯ΢Οϯυ΢Ͱɺ ʮDaraʯʼʮGeometry based selectionʯͷத͔Βɺ ʮSurface angle [deg]ʯʹνΣοΫΛೖΕ͍ͯͩ͘͞ɻ *1 σϑΥϧτ͸ Surface-1 Ͱ͢ɻ 5
6. 2.3 ৚݅ઃఆ 2 ղੳํ๏ ਤ 6 Set selection ϝΠϯ΢Οϯυ΢ͷϝογϡ͔Β໨తͷ໘Λબ୒͠·͢ɻ੺͘ڧௐදࣔ͞Εͨ໘ʹ໰୊ͳ͚Ε͹ ʮOKʯΛΫϦοΫͯ͠ʮSet selectionʯ΢Οϯυ΢Λด͡ɺ͞ΒʹʮOK-NewʯΛΫϦοΫ͠ɺଞͷ ໘άϧʔϓΛ࡞੒͠·͢ɻ ਤ 7 ѹՙॏ༻໘ͷબ୒ 6
7. 2 ղੳํ๏ 2.4 ࡐྉͷઃఆ ಉ༷ʹɺ ʮsymXʢX ํ޲มҐ߆ଋʣ ʯ ɺ ʮsymYʢY ํ޲มҐ߆ଋʣ ʯ ɺ ʮsymZʢZ ํ޲มҐ߆ଋʣ ʯΛ ࡞੒͠ɺ࠷ޙ͸ʮOKʯΛΫϦοΫͯ͠ʮCreate Surfaceʯ΢Οϯυ΢Λด͡·͢ɻ ਤ 8 ର৅৚݅༻໘ͷબ୒ 2.4 ࡐྉͷઃఆ 2.4.1 ࡐྉ෺ੑ஋Λఆٛ ࡐྉ෺ੑ஋Λఆٛ͠·͢ɻ ʮFE Modelʯ λϒͷ ʮModelʯ πϦʔ͔Βɺ ʮMaterialʯ Λબ୒͠ɺ ӈΫϦοΫͰදࣔ͞ΕΔϝχϡʔ ͷத͔Βɺ ʮCreateʯ Λબ୒͠·͢ɻ ʮMaterial nameʯ Λ ʮSB450ʯ ʹ͠·͢ɻ ʮAvailable modelsʯ ͷ த͔Βɺ ʮElasticʯΛબ୒͠ɺӈ໼ҹϘλϯΛԡ͠·͢ɻ ʮYoung’s modulusʯͷ஋ʹʮ20500ʢMPaʣ ʯ Λɺ ʮPoisson’s ratioʯͷ஋ʹʮ0.29ʯΛೖྗ͠·͢ɻ ʮOKʯΛΫϦοΫͯ͠ʮCreate Materialʯ΢Ο ϯυ΢Λด͡·͢ɻ 7
8. 2.4 ࡐྉͷઃఆ 2 ղੳํ๏ ਤ 9 ஄ੑࡐྉఆ਺ͷઃఆ 2.4.2 ࡐྉΛׂΓ౰ͯ ղੳର৅ʹࡐྉ෺ੑ஋Λఆٛͨ͠ࡐྉΛׂΓ౰ͯ·͢ɻ ʮFE Modelʯ λϒͷ ʮModelʯ πϦʔ͔Βɺ ʮSectionsʯ Λબ୒͠ɺ ӈΫϦοΫͰදࣔ͞ΕΔϝχϡʔͷ த͔Βɺ ʮCreateʯ Λબ୒͠·͢ɻ ʮSection-1ʯ ͷ ʮMaterialʯ ʹ ʮSB450ʯ ɺ ʮPartʯ ʹ ʮSolid Part-1*2ʯ ׂ͕Γ౰ͯΒΕ͍ͯΔ͜ͱΛ֬ೝ͠·͢ɻ ʮOKʯΛΫϦοΫͯ͠ʮCreate Sectionʯ΢Οϯυ΢Λด ͡·͢ɻ *2 σϑΥϧτͷ৔߹ 8
9. 2 ղੳํ๏ 2.5 ղੳ৚݅ͷઃఆ ਤ 10 Create Section 2.5 ղੳ৚݅ͷઃఆ ʮFE ModelʯλϒͷʮModelʯπϦʔ͔ΒʮstepʯΛબ୒͠ɺӈΫϦοΫͰදࣔ͞ΕΔϝχϡʔͷ த͔Βɺ ʮCreateʯΛબ୒͠·͢ɻ ʮCreate Stepʯ΢Οϯυ΢ͷ Type ͔Βɺ ʮStatic stepʯΛબ୒͠ ·͢ɻ ʮOKʯΛΫϦοΫͯ͠ʮCreate Stepʯ΢Οϯυ΢Λด͡·͢ɻ 9
10. 2.5 ղੳ৚݅ͷઃఆ 2 ղੳํ๏ ਤ 11 Create Step ʮFE ModelʯλϒͷʮModelʯπϦʔ͔Βɺ ʮBCsʯΛબ୒͠ɺӈΫϦοΫͰදࣔ͞ΕΔϝχϡʔͷ த͔Βɺ ʮCreateʯΛબ୒͠·͢ɻProperties ಺ͰʮSurfaceʯ͸ʮsymXʯΛબ୒͠·͢ɻDOFʢࣗ ༝౓ʣͷ U1ʢX ํ޲มҐʣͷ஋Λʮ0ʯʹ͠·͢ɻ ʮOK - NewʯΛΫϦοΫ͠·͢ɻ 10
11. 2 ղੳํ๏ 2.5 ղੳ৚݅ͷઃఆ ਤ 12 Create Boundary Condition ಉ༷ʹɺ ʮSurfaceʯʹʮsymYʯ ɺDOFʢࣗ༝౓ʣͷ U2ʢY ํ޲มҐʣͷ஋Λʮ0ʯʹͯ͠ɺ ʮOK - NewʯΛΫϦοΫ͠·͢ɻଓ͍ͯɺ ʮSurfaceʯʹʮsymZʯ ɺDOFʢࣗ༝౓ʣͷ U3ʢZ ํ޲มҐʣͷ ஋Λʮ0ʯʹͯ͠ɺ ʮOKʯΛΫϦοΫͯ͠ʮCreate Boundary Conditionʯ΢Οϯυ΢Λด͡·͢ɻ ରশ໘ʹɺͦΕͧΕઃఆͨ͠มҐ߆ଋ͕දࣔ͞Ε͍ͯΔ͜ͱΛ֬ೝ͠·͢ɻ ਤ 13 มҐ߆ଋ৚݅ͷ֬ೝ 11
12. 2.5 ղੳ৚݅ͷઃఆ 2 ղੳํ๏ ʮFE ModelʯλϒͷʮModelʯπϦʔ͔Βɺ ʮLoadsʯΛબ୒͠ɺӈΫϦοΫͰදࣔ͞ΕΔϝχϡʔ ͷத͔Βɺ ʮCreateʯΛબ୒͠·͢ɻ ʮCreate Loadʯ΢Οϯυ΢ͷ Type ͔Βɺ ʮPressureʯΛબ୒͠ ·͢ɻProperties ಺ͰʮSurfaceʯ͸ʮpressʯΛબ୒͠·͢ɻѹྗྔΛઃఆ͢ΔͨΊʮmagnitudeʯͷ ஋Λʮ10ʢMPaʣ ʯʹ͠·͢ɻ ʮOKʯΛΫϦοΫͯ͠ʮCreate Stepʯ΢Οϯυ΢Λด͡·͢ɻ ਤ 14 Create Load ʮFE ModelʯλϒͷʮAnalysesʯΛબ୒͠ɺӈΫϦοΫͰදࣔ͞ΕΔϝχϡʔͷத͔Βɺ ʮCreateʯ Λબ୒͠·͢ɻData ಺ͰʮNameʯΛʮpressure vesselʯʹมߋ͠·͢*3ɻ ʮOKʯΛΫϦοΫͯ͠ ʮCreate Analysesʯ΢Οϯυ΢Λด͡·͢ɻ *3 σϑΥϧτͰ͸ Analysis-1 Ͱ͢ɻ 12
13. 2 ղੳํ๏ 2.6 ղੳͷ࣮ߦ ਤ 15 Edit Analysis pressure vessel 2.6 ղੳͷ࣮ߦ ʮFE Modelʯλϒͷʮpressure vesselʯΛબ୒͠ɺӈΫϦοΫͰදࣔ͞ΕΔϝχϡʔͷத͔Βɺ ʮRunʯΛબ୒͠·͢ɻ ʮMonitorʯ΢Οϯυ΢͕දࣔ͞Εɺ ʮOutputʯλϒͷதͰɺJob finished ͱ දࣔ͞ΕͨΒղੳ͕ऴྃͰ͢ɻ ਤ 16 Monitor 13
14. 2.7 ݁Ռͷ֬ೝ 2 ղੳํ๏ 2.7 ݁Ռͷ֬ೝ ʮMonitorʯ΢Οϯυ΢ͷʮResultsʯΛΫϦοΫ͢Δͱղੳ݁Ռ͕ಡΈࠐ·Εɺ ʮResultsʯλϒʹҠ Γ·͢ɻ݁Ռ͸ɺ࣍ਤͷΑ͏ʹಘΒΕ·͢ɻ ਤ 17 มҐ 2.7.1 A ఺ɺB ఺ͷ૬౰Ԡྗ ʮFE ModelʯλϒͷʮResultsʯʼʮField OutputʯʼʮSTRESSʯʼʮMISESʯΛબ୒͠ɺϛʔ θεԠྗΛදࣔ͠·͢ɻϝχϡʔόʔΑΓɺ ʮFileʯʼʮToolsʯʼʮQueryʯΛબ୒͠·͢ɻQueries ಺ͷʮPoint/NodeʯΛબ୒͠·͢ɻ 14
15. 2 ղੳํ๏ 2.7 ݁Ռͷ֬ೝ ਤ 18 Query ϝΠϯ΢Οϯυ΢Ͱઅ఺ʹϚ΢εΧʔιϧΛ͚ۙͮΔͱ஋͕දࣔ͞ΕɺΫϦοΫ͢Δͱϝοηʔδ ΢Οϯυ΢ʹ Field Value ͱͯ͠දࣔ͞Ε·͢ɻA ఺ʹ͋ͨΔઅ఺Ͱ͸ 48.1MPa ͱදࣔ͞Ε·͢ɻ ਤ 19 A ఺ͷ૬౰Ԡྗ ಉ༷ʹ B ఺ʹ͋ͨΔઅ఺Ͱ͸ 26.6MPa ͱදࣔ͞Ε·͢ɻ Ҏ্ 15