JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 35
WIND ENERGY
process
Visualizing resin transfer moulding behaviour
using advanced 3D CAE technology
Jim hsu, Project Manager
hardY chou, Engineer
Fred YanG, Engineer
Moldex 3D
T
The sandwich structure design of a wind
turbine blade shown in Figure 1 is a multilayer fibre mat design with a core material and a skin material. The corresponding
material parameters are listed in Table 1.
In this case, the fabric, with a thickness of
1.24mm, is placed on the top and bottom
of the core material. An inlet is designed in
the middle of the structure, passing through
the whole blade. The resin will flow from
the inlet in the middle to both sides of the
blade. SWANCOR 2502-A/B is used as the
injected fluid with the constant pressure of
1 atmosphere.
Figures 2 & 3 are Moldex3D's 3D simulation results of the sandwich structure design
for a wind turbine blade. Figure 2 shows a
non-isothermal 3D flow simulation that
includes the different curvature geometric
values and material parameters. Figure 3
shows the 3D flow analysis of a sliced section of the part in the thickness direction. It
is observed that the resin flows faster in the
core region than in the fabric region due to
the higher permeability and lower porosity
of the core material, resulting in a faster flow
phenomenon in the core region.
In addition, the following simulation results
clearly demonstrate that traditional 2D simulation only considers the flow behaviour in
the in-plane direction. The curvature geometric values cannot be truthfully captured
and reflected in the computation of 2D simulation. The variables of the flow behaviour
in the thickness direction will be treated to
be the same in 2D/2.5D simulation, which
will ultimately create a great discrepancy
in the result when comparing with the actual moulding scenario since the influence
of different material permeabilities and porosities is not considered.
Fig. 1: Sandwich
structure design of
a wind turbine blade
No108 October 2016
Tab. 1: The core and skin material parameters
Fabric
Core
Thickness [mm]
1.24
25
K11 [m2]
1.80E-11
5.61E-11
K22 [m2]
1.23E-11
1.97E-10
K33 [m2]
3.27E-12
1.97E-10
ϕ
0.44
0.11
/ jec composites magazine
Feature Wind energy
he traditional 2D/2.5D simulation
tool has its limitations on fully capturing the true geometry of the part
and the differences between the material
properties in the thickness direction. Thus,
the accuracy of the 2D/2.5D simulation
results may be compromised. Therefore,
Moldex3D has established a true three-dimensional (3D) numerical simulation tool
suitable for all types of fibre compositions
that captures the full geometric values of
the simulated parts and makes it possible to
observe the resin flow in the mould.
Resin transfer moulding (RTM) is one of the most prevalent processes
available today in composite product manufacturing since it can reduce
production time and produce high-strength fibre reinforced plastic (FRP)
parts. In addition, sandwich structures made of multilayer fibre mats
with core material(s) have been a prominent design for wind turbine
blades and aircraft part manufacturing in order to further strengthen the
structural properties of FRP parts. Thus, the following study intends
to gain a comprehensive understanding of using a sandwich structure
design in the resin transfer moulding (RTM) process.
35
Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #108 - October 2016
Cover
Edito
Opinion: BOI Thaïlande
Contents
NEWS
In brief
Agenda
JEC Conferences 2017
BUSINESS
Merging
Basalt
MANUFACTURING
Biocomposite
Green Materials
3D Printing
Feature Wind energy RECORD BEATING INDUSTRY
Resin
Performance
Recycling
Recycling
Offshore
Process
Design
Market
SOLUTIONS
Marine
Infrastuctures
Construction
Pavilion
In the world
TECHNOLOGY
Simulation
Repair
Index
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - BckCovAd
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Cover
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 2
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Edito
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Opinion: BOI Thaïlande
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 5
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Contents
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 7
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - In brief
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 9
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Ad1
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Ad2
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Agenda
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - JEC Conferences 2017
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 12
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Merging
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 14
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Basalt
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 16
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 17
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 18
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Biocomposite
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 20
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 21
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Green Materials
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 23
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 3D Printing
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 25
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 26
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Resin
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 28
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 29
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Performance
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Recycling
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 32
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Recycling
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Offshore
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Process
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 36
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Design
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Market
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 39
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 40
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Marine
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 42
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 43
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Infrastuctures
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 45
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Construction
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 47
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Pavilion
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 49
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - In the world
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 51
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Simulation
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 53
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 54
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Repair
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 56
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 57
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - Index
JEC COMPOSITES MAGAZINE - Issue #108 - October 2016 - 59
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