soft solids - blog.espci.fr · soft solids 3 ects - 35h wednesday : 2 pm –5:30 pm ens –room...
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Soft Solids3 ECTS - 35h
Wednesday : 2 PM – 5:30 PMENS – Room L363
Matteo CiccottiProf. de l’ESPCILaboratoire SIMM
Benoit RomanDR CNRSLaboratoire PMMH
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Introduction to solid mechanicsFocus on soft solids
Traditional solid mechanics (Stiff)
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Introduction to solid mechanicsFocus on soft solids
Traditional solid mechanics (Stiff)
soft solids
large shape changes : functionalities, morphogenesis..
A) soft because slender
drag sail
![Page 4: Soft Solids - blog.espci.fr · Soft Solids 3 ECTS - 35h Wednesday : 2 PM –5:30 PM ENS –Room L363 Matteo Ciccotti Prof. de l’ESPCI Laboratoire SIMM Benoit Roman DR CNRS Laboratoire](https://reader033.vdocuments.mx/reader033/viewer/2022060216/5f0628e17e708231d416975f/html5/thumbnails/4.jpg)
Introduction to solid mechanicsFocus on soft solids
Traditional solid mechanics (Stiff)
soft solids
large shape changes : functionalities, morphogenesis..
A) soft because slender
MorphogenesisIn biology
![Page 5: Soft Solids - blog.espci.fr · Soft Solids 3 ECTS - 35h Wednesday : 2 PM –5:30 PM ENS –Room L363 Matteo Ciccotti Prof. de l’ESPCI Laboratoire SIMM Benoit Roman DR CNRS Laboratoire](https://reader033.vdocuments.mx/reader033/viewer/2022060216/5f0628e17e708231d416975f/html5/thumbnails/5.jpg)
Introduction to solid mechanicsFocus on soft solids
Traditional solid mechanics (Stiff)
soft solids
large shape changes : functionalities, morphogenesis..
A) soft because slender
B) soft because of weak materialSoft contact line
Liquid drop on a gel
![Page 6: Soft Solids - blog.espci.fr · Soft Solids 3 ECTS - 35h Wednesday : 2 PM –5:30 PM ENS –Room L363 Matteo Ciccotti Prof. de l’ESPCI Laboratoire SIMM Benoit Roman DR CNRS Laboratoire](https://reader033.vdocuments.mx/reader033/viewer/2022060216/5f0628e17e708231d416975f/html5/thumbnails/6.jpg)
Introduction to solid mechanicsFocus on soft solids
Traditional solid mechanics (Stiff)
soft solids
large shape changes : functionalities, morphogenesis..
A) soft because slender
B) soft because of weak materialSoft shockSplat ball
https://www.youtube.com/watch?v=FH7aSxn-nEQ
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• Physicist point of view: order of magnitude, dimensional analysis, interpretation
• Mini research projets
Introduction to solid mechanicsFocus on soft solids
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Program:08/01 MC 1D Continuum mechanics
15/01 BR Slender media
22/01 MC 3D Continuum mechanics
29/01 BR Slender structures
05/02 MC 3D Structures
12/02 BR Instabilities
26/02 MC Fracture
04/03 BR Peeling, tearing and delamination
11/03 MC Soft materials
18/03 BR Plates and shells
01/03 Exam
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Mini projects
• By group (recommended : 2 persons)• Interaction with us • Experiments are possible (contact us)
• A short presentation (10mn) during class
1/3 of the final mark
OBJECTIVE : to help you think/discuss about the class materialand use it in a real problem
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New mini projects
• What are the conditions for whip cracking ?
• What is the dynamics (speed) of a safety band wrapping ?
• How to cut a well shaped roasbeef slice ?
• How fast can you strike a golf ball?
• Sticky climber man competition
• What are the condition for a paper popper to make noise?
• What is the height of a solid siphon
• Can we explain why a grooved flat strip folds into a cylinder when under traction?
• Why does Kamifusen (Japanese ball) inflate when bouncing?
• How do animals/plants stick to walls?
• What is the sticking diameter of a splat ball ?
• Why do we get sauce everywhere when eating spaghetti?
https://blog.espci.fr/softsolids/mini-projects/
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Older mini projects
• What is the wind speed over which an umbrella accident can occur?
• What is the landing dynamics of a snake?
• The mowing of wheat: cutting or bedding?
• Is it good to have a flexible fishing rod ?
• How long does it take for a inverted cap before jumping ?
• What is the jumping height of water beads?
• What is the highest pile of cubes?
• How to make collapsible rubber cups stable?
• How should captain Haddock shake his finger to debond the band aid?
• Should a diving bird be concerned with buckling?
• Oak or reed : which one breaks first in a storm?
• What is the maximum height an M&M can fall ?
• How do spider webs stick to walls?
https://blog.espci.fr/softsolids/mini-projects/
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What is the wind speed over which an umbrella accident can occur?
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What is the landing dynamics of a snake?
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https://youtu.be/_dQJBBklpQQ
What is the height of a solid siphon?
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The mowing of wheat: cutting or bedding?
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Is it good to have a flexible fishing rod ?
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What is the jumping height of a jumping cap ?
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https://youtu.be/OfcCsP-T1pc
What is the bouncing height for water beads?
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What is the highest pile of cubes?
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Why does Kamifusen (Japanese ball) inflate when bouncing?
https://youtu.be/dqXZ3bxVBcs
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How to make collapsible rubber cups stable?
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Why is it so hard to peel an old carrot?
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How should captain Haddock shake his finger to debond the band aid?
![Page 25: Soft Solids - blog.espci.fr · Soft Solids 3 ECTS - 35h Wednesday : 2 PM –5:30 PM ENS –Room L363 Matteo Ciccotti Prof. de l’ESPCI Laboratoire SIMM Benoit Roman DR CNRS Laboratoire](https://reader033.vdocuments.mx/reader033/viewer/2022060216/5f0628e17e708231d416975f/html5/thumbnails/25.jpg)
Should a diving bird be concerned with buckling?
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Why do we get sauce everywhere when sucking spaghetti?
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What is sticking diameter of a splat ball ?
https://youtu.be/bOm_wvtcWm0
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Oak or reed ? which one breaks first in a storm?
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What is the maximum height an M&M can fall ?
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Why is that so hard to open a packaging ?
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How do spider webs stick to walls?
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TODAY’S MENU1D STRETCHABLE SOLIDS
• From springs to Hooke’s law
• Strain and stress fields
• Fundamental principle of dynamics
• Static equilirium of an elastic rod
• Dynamics of en elastic rod
• Towards soft rods
Matteo Ciccotti – Cours MSM2 – ESPCI 33