A Modern CAE Environment: Enabling Smarter Decisions
iGPS Pallet
José Antonio Hernández, CAE Engineer, Plásticos Técnicos Mexicanos
NX CAE
Symposium
2013
LOGO HERE
20XX-XX-XX
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Plásticos Técnicos Mexicanos
• PTM (Plásticos Técnicos Mexicanos) was founded in 1976. Today, with over 35
years of experience, provides solution and manufacturing for plastic processing
projects. PTM provides specially services, tailored to meet client-specific needs,
and PTM also serves a range of industries, such as automotive, material handling,
as well as food and beverage.
• PTM has two production plants in Mexico as well as operations in Colombia and
Brazil with more than 1,000 employees, the annual processing capacity exceeds
20,000 tons of plastic resins. PTM has modern production capabilities and the
ability to perform various plastic transformation processes, such as blown,
injection, thermoforming and extrusion.
• PTM recovers and recycles more than 8,000 tons of plastic annually for use in the
manufacture of useful products. PTM is one of the largest plastics recyclers in
México.
20XX-XX-XX
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Between 80% and 90% of pallets fall in two problems:
block pallet breaks
75% – 80%
pallet disassembly
5% – 10%
20XX-XX-XX
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Reasons of block pallet breaks:
Injection pallet
walls: 3 – 4 mm
Structural foam pallet
walls: 6 – 12 mm
Inside Injection Foaming pallet
walls: 4 + 12 + 4 = 20 mm
THE SOLUTION
iif process
20XX-XX-XX
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Reasons of block pallet disassembly:
Snap-Fit
design
1st step snap-fit design
2nd walls smelting with iif
THE SOLUTION
iif process
20XX-XX-XX
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Materials
Mechanical Properties
Polyethylene
Young´s Modulus = 822Mpa
Poisson´s Ratio = 0.388
Stress = 16.6 Mpa
Structural foam
Young´s Modulus = 1573Mpa
Poisson´s Ratio = 0.3
20XX-XX-XX
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Design
This model was designed using NX CAD
Structural Foam
Cover
Base
Whole assembly
20XX-XX-XX
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Dimensions
20XX-XX-XX
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The Finite element model (preprocessing) was made using NX CAE.
• 3D tetrahedral elemenet used (CTETRA10) more than 2 million of elements.
The Solution was made using NX Nastran.
• Solution NLSTATIC106 Considering geometry and material nonlinear characteristics.
Finite Element Model
20XX-XX-XX
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The pallet works as a unique structure, Displacement
Results
With a vertical load (1,270 Kg) on the surface
Maximum Displacement=19.98mm
20XX-XX-XX
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Physical Test, Results
POSITION L1 C L2
Without load 00
mm
00 mm 00
mm
Initial measure 15
mm
17 mm 16
mm
After 24hr 17
mm
19 mm 20
mm
After 48hr 18
mm
20 mm 21
mm
AVG. SHORT
SIDE
19.7
mm
20XX-XX-XX
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The pallet works as a unique structure, Stresses
Results
Stresses=@24Mpa
20XX-XX-XX
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Facility List Upgrades
implemented by PTM for the iGPS program
• Base Mold – Austria
• Cover Mold – Austria
• RFID and inserts robot – Italy
• 80 ton silo – Mexico
• Water cooling equipment – Italy
• Foaming control device – USA
• Platform movement equipment –
Mexico
• Material gravimetric loaders – USA
• Equipment investment $2,566,000
• Building modifications $726,000
• TOTAL INVESTMENT FOR iGPS
• $3,292,000
20XX-XX-XX
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New recycling plant
implemented by PTM for the G1 iGPS pallet
• Platform separator - Mexico
• Schrader – Austria
• Metal separator – Germany
• Grinder – Germany
• Washing machine – Germany
• Drying device – Germany
• Engineering and installation
• Other equipment
• Equipment investment
$1,349,000
• Building $50,000.
• TOTAL INVESTMENT FOR iGPS
• G1 platform recycling.
• $1,399,000
20XX-XX-XX
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Summary
• Using the engineering and design tools was very useful to increase the proposals in
less time and faster.
• With NX CAD was very fast to move the design and have several concepts (more
than expected) using synchronous thechnology.
• Several environments with differents loads was fast and the solution process and
results with NX CAE and NX NASTRAN.
• Finally the engineering and design process was done on time because of NX CAD,
NX CAE and NX NATRAN.
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