課件分析ansys技術(shù)construction simulation anys

1、Simulation Driven Building DesignContentMarket Drivers and Key Business InitiativesComprehensive Virtual Building Design: Wind engineeringStructural analysis and stabilityBlast, explosion and homeland securityHVAC devices designsThermal comfort and ventilationFire and smoke management ConclusionsThe

2、 Construction Industry is Focused on These Market DriversNew MaterialsRising Cost of EnergyCompliance to Building CodesExtreme CreativityMultiplication of Natural DisastersCost of ConstructionIn response to the new challenges, civil engineering companies are focusing on these initiativesReducing Cos

3、t of Construction and ServicesTo make construction affordable to a larger audience across geographiesBuilding Information Modeling (BIM)To accelerate, share and globalize the processMaximizing Passive SafetyTo protect people and ownership in any circumstanceGreen BuildingTo make building comfortable

4、 and more affordable Smart BuildingsTo adjust to a changing environment and activitiesAutomatic Compliance to Building CodesTo ensure compliance from the early stage no matter of local regulationsPains and ChallengesCost, time and competitionSafetyBuildings subject to a huge range of challenges: Som

5、e small, some huge, some man-made, some naturalsome daily, some once in a lifetime. SustainabilityMaintaining comfortable living conditions throughout the year while minimizing the energy consumptionKeeping costs at a minimum levelUncertainty of performancesUsing unconventional, sometimes unpredicta

6、ble, technologies that fall outside the comfort zone of many practicing engineers and architectsSimulation Driven Building DesignDesigning new, innovative buildings raises numerous challengesSelection and location of safety equipment Behavior under extreme conditionsStress and fatigue of parts Envir

7、onmental impactMaterial selection Sustainability Stability Some pictures, courtesy of Immergas S.p.A., Scott TaylorExternal aerodynamicsVentilationEquipment design Modeling of structureEarthquake analysisDomestic burner designSoil mechanism modelingImpact of objects on windowWind EngineeringGuggenhe

8、im Museum, Bilbao, 2009Pedestrian Comfort AnalysisWould a new (brown) building affect the pedestrians and neighbors?Impact of the development on the flow patterns in adjacent streetsZone of fort (wind speed 5 m/s)Color contour of the velocity field surrounding the proposed building (brown)Solar Shad

9、ing ModelingHow much annoyance would b ring the new building during Summer, Winter?Could we minimize the impact through minor modification of building shape?Noon6 PMStructural Design and StabilityBuilding Structure AnalysisStructure integrity under extreme conditionsSingle part or assembly modelingW

10、ind induced deformationsPre-stressed, reinforced concreteSeismic analysisSoil mechanicsGeotechnical solutionsDeformation of a hospital masonry structure due to a code earthquake eventSome pictures: Courtesy of Pont Terv Ltd. Budapest, Hungary. High rise buildingsIconic landmarksParking lotsBridgesDa

11、msTunnelsMallsTheatersStadiumsBridge aeroelasticityInternal Components: Floating Staircase DesignLoading variations analysis for two staircase configurations: angled and curved .FEA results of staircase analysisWould this elegant floating staircase safely support the load?Could material fatigue enda

12、nger the inhabitant after a decade or two?Could I use a cheaper material without compromising with safety?Engineering Simulation BenefitsPrediction of stress, strain and displacementInterpretation of results into safety factorVirtual prototypingCost effective testing of new, innovative configuration

13、Courtesy of Scott TaylorFire behavior of composite floors with cellular beamsANSYS Sets the StageSimulation was used to design the floating stage set used in a Bond movie.Analyzing Structural DetailsEvaluation of Ultimate Limits of StructureStructural Design and Stability: Component AnalysisWimbledo

14、n Roof StructureWembley ComponentsStress analysis of an important joint of the Wembley stadiumBoth the Wembley Stadium and the Wimbledon Arena involve numerous mobile mechanical components. Their resistance to stress and fatigue must be ensured and possibly extended through proper understanding of t

15、he loads applied on the stucture.Structural Design and Stability: Global AnalysisDesigning a Stadium able to sustain rhythmic mass movement taking place during music concert (Manchester City)Models for big structuresFirst & second modesBlast, Explosion and Home land SecurityWhat if an Explosion Happ

16、en?Pressure wave and fire spreadImpact of objects and vehicles on buildingsDamage to buildings structureContaminants and dust dispersionBenefitsInvestigation of various disaster scenariosOptimization of passive building resistance to blastAdjustment of fire suppression and smoke management systemVen

17、tilationFire suppressionSmoke managementMaintain safety escape path despite extreme conditions Courtesy of Risk Management Solutions Inc. and The Sanborn Map Co.Security and SafetyModeling of shock, impact & blast on glass through Explicit analysisSeismic loading on glazing systemsImpact of debris o

18、n window (windstorm, hurricane)Bullet impactBird impact on airplane windshieldBlast loading on glass facadesBlast loading and building responseDeforming structures Air vents through openings generated by blastImpact into reinforced concreteVentilation and Thermal ComfortSolar gains (Summer) and radi

19、ant losses (winter) issues n our Sheffield officeOccupant thermal comfort and indoor air qualityPredicting room conditions:Air velocity, temperatureRelative humidity, thermal radiationToxinsAssessment of a variety of comfort criteriaCombined with information about occupant activity and clothingImpac

20、t of heat loss through the structure, including solar gain effectsTesting effectiveness of novel strategies and concepts:Natural and mixed ventilationMinimizing energy consumptionThermal Comfort and VentilationCourtesy of Olof Granlund OyDatacenter CoolingVirtually test and optimize before commissio

21、ningFix non-obvious cooling problems earlyAirflow modeling allows detailed visualizationUnderstand airflow patterns and temperature profiles throughout your data centerInvestigate alternatives and “what-ifs” without costly trial and error proceduresFailure scenariosEquipment and layout changesIncorp

22、orate performance behavior with manufacturers mended thermostatic settingsTime-dependent analysesDetermine time available before servers shut off due to excessive temperaturesAirflow patterns colored by temperature in a data center with overhead supplyDatacenter Room in ANSYS Lebanon, NH Pharmaceuti

23、cal laboratory, WyethUse Airflow Modeling to Support LEED Certification ProcessCourtesy of Daniel Nall, PE, AIA and Michael EskraFlack & Kurtz Inc.“Simulations in AIRPAK were performed by Flack and Kurtz to study the interaction of the various systems The CFD analysis was used to determine the optim

24、um operating conditions for the air flow systems during regular occupancy, and to verify the ventilation effectiveness in support of a LEED credit.”Supply Airflow PathlinesWilliam Jefferson Clinton MuseumLittle Rock, ArkansasCourtesy of Flack & KurtzNaturally Ventilated Shopping GalleriaAir velocity

25、 vectorsTemperature contoursUse airflow modeling to determine changes in indoor conditions when upper side vents are openCourtesy of Mechanical Design AssociatesPathlines colored by temperatureVentilation system for an enclosed 5-level parking garageFresh air through openingsAxial circulating fans o

26、n each levelCentrifugal exhaust fans on each levelThe project showed ability of the ventilation system to circulate fresh air throughout the facilityParking Garage VentilationFire and Smoke Management“Authorities are now recognizing engineering simulations of fire scenarios are an important stage of

27、 performance-based design cycle”. Fire scenario with smoke management system that segregates the atriumFire scenario with smoke penetrating many occupied areas of a building with a complex atriumCourtesy of RWDI, Inc.uelph, CanadaSmoke Management in Complex AtriaIn RWDIs experience, providing a code

28、 specified quantity of exhaust at the top of the atrium is not always sufficient for a safe atrium design. Design strategies are necessary to help keep smoke out of occupied zones. RWDI uses a number of these to improve smoke management systems. For example, an atrium can be segregated into smaller

29、and simpler atria when a fire erupts. Segregation in this atrium led to measurable reductions in undesired smoke propagation, used less than half the exhaust air, and saved the owner both capital and operating costs.Fire and Smoke ModelingOfficial regulations and safety concerns require efficient ve

30、ntilation and detection systems:Understanding the spread of smoke and heatDesigning efficient equipment for fire suppressionPredicting the distribution of suppression agentsStudying their interactions with the fire and smokeIdentifying how fires developDetermining impact on neighboring structuresThi

31、s is not a movie with special effects; this is the result of accurate simulations!Victoria line tunnelPiccadilly line tunnelapproximate position of the fireticketing boxentrancesentrancesFire and Heat PropagationKings Cross Fire and BackdraftTemperature distribution in Kings Cross station a few minu

32、tes after the beginning of the fire.The numerical simulation of a fire in an escalator tunnel of an underground station (Kings Cross accident, UK, 1987)1.6 MW fire in a 45 m long Piccadilly line tunnel with inclination of almost 45oOfficial enquiry accepted the Trench Effect predicted by ANSYS CFDCo

33、mplex modeling of backdraft fireQuick injection of oxygen in an environment made of hot combustible gases leading to a deadly explosive fire Fire SuppressionDroplet Trajectories Colored by Residence TimeCourtesy ofNanomist Systems LLC, USLarge Water Droplet (150mm) Spatial ProfilesTemperature iso-su

34、rfaces and droplet trajectories before extinction, in a ships machinery space.British Crown Copyright 2007/MOD.Published with the permission of the Controller of Her Britannic Majestys Stationery OfficeEfficiency of fire suppression device is critical to minimize fire impact as soon as it is detecte

35、d. Droplet size modeling in possibly complex geometry are simulated by our users in order to optimize the location and the effectiveness of fire suppression equipment.Tenability of StructuresThermo-mechanical fluid structure interaction “Fragile” structured;Weakened by initial impactKept under inten

36、se fire for a long period of timeDeterioration of the structure must be include in the modelTransient deformation of materials under extreme temperatures Identification of zones where evacuation routes would be safer Estimation of time before collapseResistance of the structure after firePhysically

37、Based Modeling and Multi-Physical Simulation Systemfor Wood Structure Fire Performance1, Tsing Hua University, BeijingSmoke Extraction in Major AirportsIn the event of a fire, an emergency smoke exhaust system will start to operate within one minute of detection. This system includes the deployment

38、of emergency curtains, a popular means of creating zones within large indoor structures to control the spread of smoke. For any given structure, designers need to understand how smoke spreads in order to position curtains where they are most needed.For buildings containing atria, curtains are a prim

39、e smoke management strategy as they can efficiently isolate these large open spaces from the rest of the building.Courtesy of Maroun El-Khoury and Sharbel Haber, Dar Al-Handasah, Beirut, Lebanon; and A.K. Ahmed, Fluid Codes LtdFire scenario after 15 minutes with emergency curtains in use; the fire o

40、riginates on the basement levelVisibility contours across the concourse after 15 minutes for the fire scenario with activated emergency curtainsWhat If Scenarii with Virtual BuildingsA virtual building model to investigate various disaster scenarii:Various sources of events: impact, explosion, fire, smoke generationVarious source locationsEvolution of events analyzed with necessary accuracyFire and smoke propagation, resulting structural deterioration, preserved escape wayImpact of structural, material and equipment modificationsSmall modifica