JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 57

Enabling fast and efficient troubleshooting
The first indication of a design problem, such as noise or vibration, is often encountered during sea trials. In some cases however, it can take months or even years of operation, or a rare off-design situation, for a design flaw to become apparent (e.g. fatigue cracks or cavitation erosion on rudders). In some cases, the diagnosis of the problem is straight-forward, but in other cases a more extensive analysis is required to pinpoint the root cause. Once this is known, redesigning the affected structure or operational procedure is comparatively easy. Simulation techniques are employed in both the diagnosis of the problem and the effective assessment of the redesign options. Vibration, including vortexinduced vibration, is an area where simulation has advanced processes considerably (see Figure 7).

Fig. 5: Flow simulation for a fast twin-screw vessel

the first place by performing appropriate checks during the design stage is clearly preferable. Traditionally, naval architects have resorted to standard baseline designs, statistical regression models and systematic series data as a basis for their design. Most of these data series, however, are hopelessly outdated. Today, the FRIENDSHIP-Framework software offers an environment for compiling custom data series for numerical simulation (see Figure 6).

Fig. 7: Vibration level in owner’s cabin (a) Vibration level in owner’s cabin after modification (b)

Fig. 6: FRIENDSHIP-Framework. Tailored design series for megayachts

Highly skilled experts make the difference
Time and time again, advanced design projects have shown that simulation, when used skilfully, saves time and money. Ideally, the parties involved should agree on the simulation scope and procedure at the earliest time possible. Unless the ship owner (as the main benefactor) specifically asks for simulation for design optimisation in his project specifications, time and budget constraints will often prevent them from being carried out. Furthermore, the mere No73 June 2012 /

To develop a parametric design, a family of design variants can be created by systematically modifying the parameters. The key benefit of this method is that it allows the designer to build a knowledge base ahead of an anticipated project. Once this has been done, the designer can quickly extract data from the numerical model series during the conceptual design stage.

jec composites magazine 57



JEC COMPOSITES MAGAZINE - Issue #73 - June 2012

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #73 - June 2012

Cover
Edito
Point of view: core material
Contents
Agenda of Events
COMPANY & BUSINESS
- In Brief
- Reinforcement
- Book launch
APPLICATIONS
- Railway
- UAV
- Electric vehicule
MARKET
- Human ressources
- Sandwich
SPECIAL JEC ASIA 2012
- Floor plan
- Conferences
- JEC Asia Innovation Awards Programme
- Innovation report
- Country guest of honour: Malaysia
- Reinforcement
- Wind energy
RESEARCH & DEVELOPMENT
- Design
- Automation
TECHNOLOGY & INNOVATIONS
- Reinforcement
- UPR
- Mirco-pultrusion
- Pultrusion
- Injection
- Certification
Index
In the world
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - Cover
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 2
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - Edito
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - Point of view: core material
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 5
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - Contents
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 7
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - Agenda of Events
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - In Brief
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Reinforcement
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 11
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Book launch
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 13
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Railway
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 15
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - UAV
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Electric vehicule
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 18
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Human ressources
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Sandwich
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 21
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 22
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 23
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Floor plan
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 25
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Conferences
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 27
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 28
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 29
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - JEC Asia Innovation Awards Programme
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 31
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 32
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 33
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Innovation report
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 35
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 36
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 37
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 38
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Country guest of honour: Malaysia
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 40
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 41
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 42
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 43
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 44
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 45
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 46
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 47
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Reinforcement
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 49
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 50
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Wind energy
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 52
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 53
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 54
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Design
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 56
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 57
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 58
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Automation
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 60
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 61
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 62
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 63
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 64
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 65
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Reinforcement
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 67
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - UPR
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 69
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 70
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Mirco-pultrusion
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 72
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 73
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Pultrusion
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 75
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Injection
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Certification
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 78
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 79
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 80
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - Index
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - In the world
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 83
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 84
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