V.R. Visualization System for UNDEX Ship Shock Simulation “Advancing Ship Battle Damage Response by Integrating Distributed and Hull Systems Models” May 25-26, 2016 r10 With added graphics from KOR V.R. Visualization System for UNDEX Ship Shock Simulation Chan-Min Lee, Jung-Hun Chung, Byoung-Jae Park, Doo-Hwan Mun Korea Ocean Research & Development Institute Edited by Author Joseph Famme for ASNE AMTS Presentation

Hull Damage Control Today Hull Structural Strength - 1

Hull Damage Control Today Hull Structural Strength - 2

Hull Damage Control Today Intelligent Decision Aid

Compare Post Damage Information Distributed Systems and Hull Systems 2000

Advancing Damage Control – Survivability Analysis and Decision Capability Combining: Traditional Doctrine / BDCS Finite Element Methods UNDEX Ship Shock Analysis DDG81 Model

FEM + VR = Effective Post-Processor Visualization System Based on VR VR Based Points of View FEM + VR = Effective Post-Processor Visualization System Based on VR

Example of Post-processor

Example of Post-processor

What is Virtual Reality (V.R.)? Application of Virtual Reality in Korean Navy

Program Configuration Model Data Parser Module Result Data Parser Module FEM Model Data Structure Result Data Data Structure Model Data Visualization Module Result Data Visualization Module VR Data Visualization Module

Program Development Environment OS: Windows 2000/NT/XP Programming language: MS Visual Studio 6.0 3D Graphic library: SGI OpenGL Performer ETC: GMS Strip Chart Active-X control

Merging FEA and VR Models UNDEX Ship shock simulation based on time steps Node structure of V.R. model differs from that of Finite element model Making FEM model like V.R. model requires time Wire Frame of Finite element model Wire Frame of VR Model

Advantage of Combining FEM Data with V.R. Verification of FEM model can be achieved by V.R. Effective visualization of ship’s underwater explosion response analysis result

Specific Function for Effective Visualization Solution : Employing 3D Walk-Through Position Data 2D GA Navigation Programs

Specific Function for Effective Visualization Problem : FEM mode is covered by V.R. and disappears in the viewport

Advancing Damage Control – Survivability Analysis and Decision Capability Visualizing the torpedo attack path in the UNDEX environment …. SEA to detonation … effect on hull FEA Model DDG81 Model

Application Examples This animation shows running program. It assembles equipment model based on VR into Hull Structure based on finite element model data This VR model can be add and remove whenever user wants.

Application Examples

Merging FEA Model, HM&E and Combat System Models

Application Example

Cheonan Hull Damage: Both halves of the Ship Positioned on Blocks

Cheonan Hull Damage: Both halves of the Ship Positioned on Blocks

Hull Stress Decision Aids to HSSS to Damage Sensors NSWC FCCS / HSSS Hull Box beam Model provided Ability to “erase” damaged Structure NSWC Intelligent Decision Aid (IDA) JHSV Hull Stress Modeling X-Craft Hull Stress Monitoring to DDG1000 new Gigabit Ethernet connectivity in the engineering plant and a Digital Video Surveillance System (DVSS), Auto Fire Suppression, and Double Bottom with Structure Sensors.

Merging Ship & Crew Task Models into the ‘Scenario’ I/ITSEC Paper 1564 12/7/04

PMS-430 Combined CS-DS-Hull BDCS 2000-2001 DDG-51 Standard Monitoring Control System (SMCS) & “Smart Ship” Yorktown CG-47 Battle Damage Control System (BDCS)

DDG1000 DC Page Today Fig. 2.2 BDCS DDG1000 … and Tomorrow ?

Visualizing the future Sea-Air Battle Space Advancing Damage Control – Survivability Analysis and Decision Capability 2016 … and Beyond … Visualizing the future Sea-Air Battle Space UNDEX SEA & Above Water Threats Using FEA and VR Models ? HSS IDA Model supported by Hull Sensors CS-DS Model supports CS and DS Decision Aids

Application Virtual Reality in Damage Analysis Advancing Damage Control – Survivability Analysis and Decision Capability 2016 … and Beyond … Application Virtual Reality in Damage Analysis Importance of CAD – Physics - FEA design tools in determining the cause of the South Korean Ship Cheonan Joint Korean / US NAVSEA Analysis, included combined HM&E & hull girder weight and loads: Got it exactly correct! The ‘ROUND’ Bubble resent the FIRST torpedo Warhead expansion before collapse … And ‘Reformation’ as a ‘shaped’ by water pressure ‘teardrop’ ‘shaped charge’ that cut the ship in half in 1.2 seconds . . . . . . . .

Conclusions Developing visualization system of UNDEX Ship Shock simulation data by using VR technology - Finite element model merge to VR model Combining FEM and VR introduces new possibilities Ship Design Design Validation Damage Control / Ship Survivability Merge with NSWC FCCS/HSS and/or Maestro Rhino, etc. for Assessing Damage Apply Input from Hull Sensors Supports the Total Ship – Crew Model Actions with Improved Visualization for Command Decisions

Thank You / Q & A Maritime & Ocean Engineering Research Institute, KORDI Byoung-Jae PARK, +82-42-868-7202/ bright-moon@moeri.re.kr