1. 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

2. Hull Damage Control Today Hull Structural Strength - 1

3. Hull Damage Control Today Hull Structural Strength - 2

4. Hull Damage Control Today Intelligent Decision Aid

5. Compare Post Damage Information Distributed Systems and Hull Systems
2000

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

7. 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

8. Example of Post-processor

9. Example of Post-processor

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

11. 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

12. 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

13. 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

14. 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

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

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

17. 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

18. 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.

19. Application Examples

20. Merging FEA Model, HM&E and Combat System Models

21. Application Example

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

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

24. 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.

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

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

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

29. 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

30. 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

31. 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

32. Thank You / Q & A
Maritime & Ocean Engineering Research Institute, KORDI
Byoung-Jae PARK, /