Three-dimensionally patterned energy absorptive material and method of fabrication

Patent metadata

Field	Value
Publication number	US-9962905-B2
Application number	US-201313905056-A
Country	US
Kind code	B2
Filing date	May 29, 2013
Priority date	May 29, 2013
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

A three-dimensionally patterned energy absorptive material and fabrication method having multiple layers of patterned filaments extrusion-formed from a curable pre-cursor material and stacked and cured in a three-dimensionally patterned architecture so that the energy absorptive material produced thereby has an engineered bulk property associated with the three-dimensionally patterned architecture.

First claim

We claim:

1. A three-dimensionally patterned mechanical energy absorptive material comprising:
a stack of directly bonded elastomeric filament layers wherein elastomeric filaments of said elastomeric filament layers are extrusion-formed from a pre-cursor material and simultaneously cured so that the elastomeric filaments of a first elastomeric filament layer are directly bonded to the elastomeric filaments of an adjacent elastomeric filament layer and the mechanical energy absorptive material has a pre-determined bulk property profile that absorbs mechanical energy with a pre-determined mechanical response.

2. The three-dimensionally patterned mechanical energy absorptive material of claim 1 ,
wherein the filaments are patterned so that the three-dimensionally patterned architecture comprises at least one of open-cells and closed cells between filaments.

3. The three-dimensionally patterned mechanical energy absorptive material of claim 1 ,
wherein the filaments are patterned so that the pre-determined bulk property profile of the mechanical energy absorptive material is uniform in at least one direction across different regions of the mechanical energy absorptive material.

4. The three-dimensionally patterned mechanical energy absorptive material of claim 1 ,
wherein the filaments are patterned so that the pre-determined bulk property profile of the mechanical energy absorptive material is different for different regions of the mechanical energy absorptive material.

5. The three-dimensionally patterned mechanical energy absorptive material of claim 4 ,
wherein the filaments are patterned so that the pre-determined bulk property profile of the mechanical energy absorptive material is graded across the different regions of the mechanical energy absorptive material along at least one direction.

6. The three-dimensionally patterned mechanical energy absorptive material of claim 1 ,
wherein the filaments of a layer are transversely patterned relative to filaments of an adjacent layer.

7. The three-dimensionally patterned mechanical energy absorptive material of claim 1 ,
wherein the mechanical energy absorptive material has a non-planar surface contour.

8. The three-dimensionally patterned mechanical energy absorptive material of claim 7 ,
wherein the non-planar surface contour of the energy absorptive material substantially conforms to a 3D object against which mechanical energy is to be absorbed.

Assignees

• Duoss Eric
• Frank James M
• Kuntz Joshua
• Maxwell Robert S
• Metz Thomas R
• Spadaccini Christopher
• Wilson Thomas S
• L Livermore Nat Security Llc

Inventors

• Duoss Eric
• Frank James M
• Kuntz Joshua
• Maxwell Robert S
• Metz Thomas R
• Spadaccini Christopher
• Wilson Thomas S

Classifications

• B32B5/12

  characterised by the relative arrangement of fibres or filaments of {different layers, e.g. the fibres or filaments being parallel or perpendicular to each other} · CPC title

• B32B5/26

  another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)} · CPC title

• B32B2307/56

  Damping, energy absorption · CPC title

• B32B2266/06

  Open cell foam · CPC title

• B32B5/18

  characterised by features of a layer {of} foamed material · CPC title