rapid tooling for plastic injection molding
Tài liệu A systematic computer-aided approach to cooling system optimal design in plastic injection molding docx
Ngày tải lên :
12/02/2014, 22:20
... local 1D
transient analysis is performed for the plastic part using an
implicit finite difference method with a variable mesh. An
iterative procedure is developed for coupling the cycle-
averaged ... less unwanted informa-
tion about internal points is obtained. Therefore, the BEM
is particularly well suited for mold cooling analysis.
The boundary integral equation (BIE) for Eq. (1) can be
written ... optimal
design in plastic injection molding
H. Qiao
Ã
Cardiff School of Engineering, Queen’s Buildings, The Parade, PO Box 925, Cardiff, CF24 0YF, UK
Received 10 December 2003; received in revised form 10...
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Tài liệu A scaffolding architecture for conformal cooling design in rapid plastic injection moulding doc
Ngày tải lên :
12/02/2014, 22:20
... (CFD)
analysis.
Keywords Conformal cooling
.
Scaffolding
.
Rapid tooling
.
Plastic injection moulding
1 Background on cooling channel design in plastic
injection mould
In recent years, rapid prototyping and tooling ... 3DP-processed tooling. Symposium of Solid
Freeform and Additive Fabrication, pp 51–56
13. Ferreira JC, Mateus A (2003) Studies of rapid soft tooling with
conformal cooling channels for plastic injection ... Direct AIM (accurate, clear, epoxy solid -injection
mould)
The advancement in rapid prototyping provides the capa-
bility for the development of rapid tooling for injection
moulding via 3D Sy stems’...
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Scientific injection molding
Ngày tải lên :
06/01/2014, 21:03
... Bushing
Hot Runner Systems
Injection Molding Tooling
Valve Gate Shut Off System
Bushings are Opened for Injection
Recommended
runner sizes
Optimizing Cycle Time
Source: Injection Molding Magazine article
Source: ... cosmetic surface may cause surface
imperfections.
Source: GE Plastics
It is suggested that direct gates not be used in
molding reinforced resins into rectangular
shapes. Fiber orientation may
result ... Considerations
ã Molding Cycle.80% is cooling time
ã Flow type.Laminar or Turbulent
ã Flow rateGPM
ã Reynolds number of > than 5000 for
turbulent flow
ã Thermal conductivity of mold steel
ã Plastic...
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Đề tài " Stability of mixing and rapid mixing for hyperbolic flows " pot
Ngày tải lên :
15/03/2014, 09:20
... X
f
+
is rapid mixing, then X
f
is rapid mixing
and it is immediate that Λ is rapid mixing.
It follows from this discussion that if Λ is not rapid mixing, then the
estimate (2.5) holds for all ... slow. On the other hand, exponential mixing is proved for the afore-
mentioned restricted classes of Anosov flows and also for certain uniformly
hyperbolic attractors with one-dimensional unstable ... superpolynomial decay (called rapid mixing
for the remainder of this paper) where for any n>0, there is a constant C ≥ 1
such that
|ρ
A,B
(t)|≤CABt
−n
,t>0,
for all observations A, B that...
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báo cáo hóa học:" A rapid method for the generation of uniform acellular bone explants: a technical note" pot
Ngày tải lên :
20/06/2014, 04:20
... in any
medium, provided the original work is properly cited.
Technical Note
A rapid method for the generation of uniform
acellular bone explants: a technical note
Katharina Jähn
1,2
, Volker Braunstein
3
, ... method for the
intra-operative generation of acellular bone explants.
Methods: Therefore, ovine cancellous bone explants from the iliac crest were prepared and used to test several
methods for ... intended to
be used for the generation of acellular autologous bone
material intraoperative.
Therefore, the aim of this study is to present a reliable,
quick and easy method for the generation...
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Báo cáo hóa học: " Rapid Prototyping for Heterogeneous Multicomponent Systems: An MPEG-4 Stream over a UMTS " ppt
Ngày tải lên :
22/06/2014, 23:20
... enable automatic rapid prototyping and lead to
optimized scheduling [4].
This paper deals with a rapid prototyping method-
ology based on the SynDEx tool, which is suitable for
transformation-oriented ... (computation).
Pentek
5
platform. The Pentek p4292 platform (Figure 4)
is made up of four TMS320C6203 DSPs. Each DSP has three
communication links: two bidirectional (300 Mhz) inter-
DSP links and one for the Input/Output ... been tested
for PCI transfers. Higher transfer rates are reached using the
RAM model enabling real-time video transfers between a P C
and a DSP platform.
Several complex tasks are performed automatically,...
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Báo cáo hóa học: " Logic Foundry: Rapid Prototyping for FPGA-Based DSP Systems" doc
Ngày tải lên :
23/06/2014, 01:20
... To
facilitate the rapid implementation and deployment of these
platform-based designs, we have identified four areas of in-
tegration as targets for improvement in a rapid prototyping
environment for digital ... software into a hardware
Logic Foundry: Rapid Prototyping for FPGA-Based DSP Systems 567
platforms. This can cause portability problems if the unique
platform interface details have been tied deeply ... all
data-asynchronous control information flows. The specifi-
cation of this interface is left as an implementation-specific
detail for each platform (interface mapping to platforms is
described in Section...
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Platelet rich plasma injection grafts for musculoskeletal injuries: a review
Ngày tải lên :
19/10/2013, 22:15
... a supine position for 15–20 min afterwards,
and is then discharged home. Patients typically experience
minimal to moderate discomfort following the injection
which may last for up to 1 week. ... platelet rich plasma for injection/ graft
Fig. 6 Musculoskeletal ultrasound, common extensor tendinosis
Curr Rev Musculoskelet Med
Platelet rich plasma injection grafts for musculoskeletal injuries:
a ... replication
Promotes angiogenesis
Promotes epithelialization
Promotes granulation tissue formation
Transforming growth factor (TGF) Promotes formation of extracellular matrix
Regulates bone cell metabolism
Vascular...
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