Emulated elasticity - Revision history

Apm: Category:Surprising facts

2026-03-29T20:19:40Z

← Older revision		Revision as of 22:19, 29 March 2026
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	[[Category:Far term target]]		[[Category:Far term target]]
			[[Category:Surprising facts]]

Apm: Category:Far term target

2026-03-29T18:23:00Z

Category:Far term target

← Older revision		Revision as of 20:23, 29 March 2026
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	* Wikipedia: [https://en.wikipedia.org/wiki/Infinitesimal_strain_theory Infinitesimal strain theory] (strain tensor)		* Wikipedia: [https://en.wikipedia.org/wiki/Infinitesimal_strain_theory Infinitesimal strain theory] (strain tensor)

			[[Category:Far term target]]

Apm: /* Delineation to mechanical metamaterials */ link to yet unwritten page emulated plasticity

2023-12-05T09:02:06Z

Delineation to mechanical metamaterials: link to yet unwritten page emulated plasticity

← Older revision		Revision as of 11:02, 5 December 2023
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	Though maybe not all. There is also …		Though maybe not all. There is also …
	* locally shiftable density (not globally changeable density as mass can only me moved not changed)		* locally shiftable density (not globally changeable density as mass can only me moved not changed)
	* emulated plasticity (clay like formability possibly with shape memory)		* [[emulated plasticity]] (clay like formability possibly with shape memory)
	* motion beyond actively resisting external forces		* motion beyond actively resisting external forces
	* influence on semi mechanical properties like emulated thermal expansion		* influence on semi mechanical properties like emulated thermal expansion

Apm: /* Maximizing toughness */ sub-section === Obsession with resilience and power ===

2023-12-05T08:55:30Z

Maximizing toughness: sub-section === Obsession with resilience and power ===

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 == Maximizing toughness ==
-By maximizing the amount of energy that the metamaterial can absorb (force times bending length) materials with unprecedented high toughness can be created. For maximal toughness an optimal combination of conversion to chemical energy conversion to thermal energy and maximal bending length has to be found. For almost all practical applications such extreme toughness won't be necessary though.
+By maximizing the amount of energy that a metamaterial can absorb (force times bending length) materials with unprecedented high toughness can be created. <br>
 == Diffeculties in design ==

Apm: /* Reversible plastic deformation */ changed headline level

2023-12-05T08:12:53Z

Reversible plastic deformation: changed headline level

← Older revision		Revision as of 10:12, 5 December 2023
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	But due to shape-memory the damage can be restored structurally.		But due to shape-memory the damage can be restored structurally.

	== Reversible plastic deformation ==		=== Reversible plastic deformation ===

	Metamaterials can be made such that they emulate plastic deformation with the big advantage of being capable to return to their original shape.		Metamaterials can be made such that they emulate plastic deformation with the big advantage of being capable to return to their original shape.

Apm: /* Delineation of emulated elasticity to utility fog and mechanical metamaterials */ simplified headlines and introduced sub-headlines

2023-12-05T08:11:53Z

Delineation of emulated elasticity to utility fog and mechanical metamaterials: simplified headlines and introduced sub-headlines

← Older revision		Revision as of 10:11, 5 December 2023
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	Short grippers, gripping rollers, springs, encaplsulated controlled breakable bonds,... many options. <br>		Short grippers, gripping rollers, springs, encaplsulated controlled breakable bonds,... many options. <br>

	== Delineation ~~of emulated elasticity~~ to utility fog ~~and mechanical metamaterials~~ ==		== Delineations ==

			=== Delineation to [[utility fog]] ===

	The informed reader might think that advanced elasticity emulation metamaterials are basically equivalent to [[utility fog]]. <br>		The informed reader might think that advanced elasticity emulation metamaterials are basically equivalent to [[utility fog]]. <br>
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	Constraints could include e.g. certain anisotropic (direction dependent) behavior. <br>		Constraints could include e.g. certain anisotropic (direction dependent) behavior. <br>

	~~----~~		=== Delineation to [[mechanical metamaterial]]s ===

	[[Mechanical metamaterial]]s go well beyond basic passive elasticity emulation. <br>		[[Mechanical metamaterial]]s go well beyond basic passive elasticity emulation. <br>

Apm: /* Advanced elasticity emulation */

2023-12-05T08:09:52Z

Advanced elasticity emulation

← Older revision		Revision as of 10:09, 5 December 2023
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	== Advanced elasticity emulation ==		== Advanced elasticity emulation ==

	Advanced emulated elasticity goes beyond simple metamaterial structures. <br>		Advanced emulated elasticity goes beyond simple passive metamaterial structures. <br>
	It adds active elements. Sensing forces and providing active counter-forces. <br>		It adds active elements. Sensing forces and providing active counter-forces. <br>
	There may be special mechanisms between the [[microcomponents]]. <br>		There may be special mechanisms between the [[microcomponents]]. <br>

Apm: moves somewhat redundant section to the end and added wikitodo

2023-12-05T08:09:32Z

moves somewhat redundant section to the end and added wikitodo

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 E.g. for crush-collapsible zone in vehicles. <br>
 But due to shape-memory the damage can be restored structurally.
 == Reversible plastic deformation ==
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 In the latter case we already come rather close to fully fledged [[utility fog]].
 Just that it has shorter and viewer linkages.
 == Related ==

Apm: /* Reversibility in structure & energy */ typo-fix & line-break & simplification & adding a concrete example

2023-12-05T08:06:56Z

Reversibility in structure & energy: typo-fix & line-break & simplification & adding a concrete example

← Older revision		Revision as of 10:06, 5 December 2023
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	== Reversibility in structure & energy ==		== Reversibility in structure & energy ==

	Elasticity (and plasticity) emulating metamaterials can be made reversible. There are two aspects on reversibility		Elasticity (and plasticity) emulating metamaterials can be made reversible. <br>
	* ~~there is structurally~~ reversibility ~~and~~		There are two aspects on reversibility:
	* ~~there is~~ energetic ~~rversibility~~		* structural reversibility
	The former can be [[FAPP]] 100%		* energetic reversibility
			The former can be [[FAPP]] 100%. <br>
	The latter can get quite close to 100% but this might not always be desired.		The latter can get quite close to 100% but this might not always be desired.

	~~Thake~~ the specific example of high performance crush dampers.		Take the specific example of high performance crush dampers. <br>
	It is possible to build metamaterials that are		It is possible to build metamaterials that are '''structurally reversible but not energetically reversible'''. <br>
	* structurally reversible but not		These '''crush damper metamaterials''' convert mechanical energy into heat very fast. <br>
	* energetical reversible.		Heat that is left to equilibrate with the environment (heat dissipation). <br>
	These crush damper metamaterials convert mechanical energy into heat very fast.		This may allow simpler and higher performance designs. <br>
	Heat that is left to equilibrate with the environment (heat dissipation).		E.g. for crush-collapsible zone in vehicles. <br>
	This may allow simpler and higher performance designs.		But due to shape-memory the damage can be restored structurally.

	== Why gum like materials emulated by brittle materials (almost) don't break ==		== Why gum like materials emulated by brittle materials (almost) don't break ==

Apm: /* Reversibility in structure & energy */ typofix

2023-12-05T08:00:49Z

Reversibility in structure & energy: typofix

← Older revision		Revision as of 10:00, 5 December 2023
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	== Reversibility in structure & energy ==		== Reversibility in structure & energy ==

	Elasticity (and plasticity) emulating metamaterials can be made reversible. ~~Thwre~~ are two aspects on reversibility		Elasticity (and plasticity) emulating metamaterials can be made reversible. There are two aspects on reversibility
	* there is structurally reversibility and		* there is structurally reversibility and
	* there is energetic rversibility		* there is energetic rversibility