Pharmaceutical Powder Compaction

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Pharmaceutical PowderCompaction
Presenter Maxim Rapoport Advisors Professor
Dr. A. Zavaliangos Grad Student Adam Procopio
http//www.sportmaster.ru/article.php?part3156 (i
mage source)
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INDUSTRIAL APPLICATION
Porous Compact
Powder
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ABAQUS POWDER COMACTION SIMULATION
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FINDING CONTACTin non-contactingbodies
NO ZOOM
100x ZOOM
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PARTICLE DISTANCE
How to gauge distance between particles?
?
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NORMAL
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PROBLEM WITH NORMAL
The P1 is a point in particle 1 P2 and P3 are
point in particle 3 When normal is calculated P1
is very close to the line given by P2-P3 Contact
is detected even though P1 is far from p1-p2
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RESULT overestimation at early stages
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3
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COLLISION
Before
After
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RESULTS
NORMAL
COLLISION
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Snap shot-Last Stages
Coordination Number
Normal
Collision
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Snap shot-Early Stages
Collision
Normal
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ANALYSIS

• Algorithms converge on late stages
• Normal algorithm overestimates the number of
  contact in early stages
• Collision algorithm makes rearrangement apparent

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Current Work

• Verification of correctness of algorithm
• Using contact pairs to evaluate contact area and
  orientation