CLARKSON ES 305 - Virtual Tools in Engineering Design

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ES305 Virtual Tools in Engineering Design Introduction to Virtual Reality and VirtoolsOverviewWhat is Virtual Reality?4 Key Elements of VRKey Element 1: Virtual WorldKey Element 2: ImmersionImmersion: Sense of “Presence”Key Element 3: Sensory FeedbackVisual: VR Display TechnologySlide 10Slide 11Projection-Based VRVirtusphere website: www.virtusphere.comHaptics: Sense of touchHaptic Interface for Surgery TrainingOther Examples of Sensory StimulationKey Element 4: InteractivityWhat is VR? (revisited)Recall: Product Delivery Process – Design CoreVirtual Product DevelopmentUse of VR in Design, Manufacturing & MarketingExample: Virtual PrototypingExample: Space Planning & MarketingVR Wheelchair ProjectSoftwareWhat is 3DVia Virtools?Virtools Training NotesVirtools Libraries1. Virtools Authoring2. Behavioral Engine3. Render Engine4. Web Player5. Software Development KitGetting HelpBasic Concepts in VirtoolsBasic Concepts in Virtools (cont.)3D Coordinate SystemObject – Mesh - MaterialBuilding BlockBB Operating CycleGetting StartedSteps to create a compositionVirtools ExercisesSlide 44ES305Virtual Tools in Engineering DesignIntroduction to Virtual Realityand Virtools11-04-2009Prof. [email protected]■Introduction to Virtual Reality□Key Elements□Virtual Product Development■Introduction to VirtoolsHomework: Exercise 1 (could complete today), and Exercise 2 to be completed on 11/10/09 (note that these are to be done individually)What is Virtual Reality?■ VR is the use of computer technology to create the effect of a 3D environment containing 3D objects which have a strong sense of spatial presence with respect to the user.■ In virtual reality, you have a sense of and interact with three-dimensional things as opposed to pictures or movies.■ Control of and interaction with the environment is typically through direct manipulation of objects in the real world.4 Key Elements of VR■Key Element 1: 3D Virtual World■Key Element 2: Immersion■Key Element 3: Sensory Feedback■Key Element 4: InteractivityKey Element 1: Virtual WorldThree-dimensional “virtual world” or “virtual environment”:Key Element 2: Immersion■Mental Immersion- sense of “presence”; state of being deeply engaged; suspension of disbelief; involvement■Physical Immersion- bodily entering into a medium; synthetic stimulus of the body’s senses via the use of technologyFrequently embodied by an “avatar” – a virtual object used to represent a participant or physical object in a virtual worldThe perception of being in a particular space or place.Immersion:Sense of “Presence”•Physically immerse the participant in a computer-generated space.•Provide computer-generated sensation to one or more of the human senses.Key Element 3: Sensory Feedback■visual■aural■haptic & tactile■vestibular (balance: equilibrium, acceleration, and orientation wrt gravity)■olfactory, taste, magnetoreceptionVisual: VR Display Technology•Computer Monitor “Fishtank VR”–Pros: Cheap–Cons: Least immersiveVisual: VR Display Technology■Head-Mounted Displays (HMDs)□The display and a position tracker are attached to the user’s head □Pros: More immersive□Cons: Individual experience■Head-Tracked Displays (HTDs)□Display is stationary, tracker tracks the user’s head relative to the display.□Example: CAVE, Workbench, Stereo monitorVisual: VR Display Technology•Pro jection-Ba s ed:- rear-projection screens, e.g. CAVE, ICUBE- large, flat-panel monitors- table-top displays–Pros: Most immersive–Cons: ExpensiveProjection-Based VRICUBE in Advanced Visualization Lab (ADVIL) at Clarkson (CAMP 155)ImmersaDeskMicrosoft SurfaceVirtuspherewebsite: www.virtusphere.comThere will be a demonstration of a Virtusphere on Thursday, 11/05/09, from 1:00 to 2:00 pm in the CAMP Atrium.10’ diameter sphere, wireless HMD (800x600), wireless controller, inverted mouse base, one person/sphere but can have multiple spheres share the same virtual environment, ~485 lb., Cortona VRML technology from ParallelGraphicsHaptics: Sense of touch■Includes touch feedback (taction) and force feedback (kinesthesia)3 DOF cylindrical robotMax force output 250 NStiffness 5x104 N/mUses force-in, position-outarrangementHaptic Interface for Surgery TrainingVEST: Virtual Endoscopic Surgery TrainingSimulation SceneHaptic instrument interface boxOther Examples of Sensory Stimulation■Proprioception – ability to sense the position, location, orientation and movement of the body and its parts (stimulation comes from within the body); includes both:□kinesthesia – sense of movement of the limbs□ability to sense body postureKey Element 4: Interactivity■responsiveness to user actions□the ability to affect a virtual world□the ability to change one’s viewpoint within a world■collaborative environments□multiple users interacting within a virtual world and among themselves■alternative realities□games, computer simulations of natural and artificial phenomenu, flight simulatorsWhat is VR? (revisited)virtual reality a medium composed of interactive computer simulations that sense the participant’s position and actions and replace or augment the feedback to one or more senses, giving the feeling of being mentally immersed or present in the simulation (a virtual world)Recall: Product Delivery Process – Design Core■a market (user need) product design specification (PDS)■conceptual design■detailed design■manufacturing■sales – the ending pointVirtual Product Development can be used throughout each phase of this processVirtual Product Development■Virtual Product Development (VPD) is an environment where all phases of the product design process use an integrated combination of both simulation software technology and traditional techniques.■Through VPD, cost effective designs with higher levels of reliability can now be achieved in less time than using only traditional physical processes.Use of VR in Design, Manufacturing & Marketing■Developing design requirements; e.g. architectural walkthroughs of spatial designs such as kitchens, aircraft interiors, etc.■Building prototypes■Configuration & management of production lines; e.g. plant layouts■Marketing – how customers actually experience a productExample: Virtual Prototyping“Think Virtual do Real”: digital prototyping as key factor for innovation Caterpillar, Inc.Example: Space Planning & MarketingAn


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CLARKSON ES 305 - Virtual Tools in Engineering Design

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