Custom manufactured fit pods
A microlattice structure may be used for a variety of different applications with a protective helmet assembly. The three-dimensional microlattice layer comprising a plurality of interconnected filaments extending along at least three different directions from a plurality of nodes. The microlattice layer may further comprise at least one material layer extending laterally between and interconnecting at least two or more nodes. The at least one material layer may be configured to transversely and rotationally constrain the nodes to increase the overall compressive strength and stiffness of the microlattice structure. The at least one material layer may comprise a single, continuous layer and/or a plurality of material layer segments. The microlattice layer may comprise a single, continuous layer or a plurality of microlattice layer segments. The microlattice layer may be stacked, the stacked microlattice layers may further comprise one or more material layers and/or one or more impact mitigation layers.
1. A microlattice pad assembly comprising:
a first pad layer, the first pad layer comprises one or more microlattice structures, the one or more microlattice structures comprising a plurality of interconnected filaments, wherein:
the plurality of interconnected filaments includes a plurality of interior filaments;
each interior filament is a straight filament that extends obliquely from a respective first end at a first surface to a respective second end at a second surface;
the respective first end of each interior filament connects with the respective first ends of at least two other filaments of the plurality of interconnected filaments to form a first set of end nodes at the first surface;
the respective second end of each interior filament connects with the respective second ends of at least two other filaments of the plurality of interconnected filaments to form a second set of end nodes at the second surface;
each interior filament intersects with at least one other filament of the plurality of interconnected filaments to form one or more mid nodes between the respective first end and the respective second end of the respective interior filament;
one of the first surface and the second surface of the first pad layer is contoured to an anatomical feature; and
the first pad layer further comprises a plurality of segments that are spaced apart, each segment of the plurality of segments directly contacting at least two end nodes of the second set of end nodes at the second surface.
2. The microlattice pad assembly of claim 1 , wherein a cross-section of each filament of the plurality of interconnected filaments is uniform along a longitudinal axis of the filament.
3. The microlattice pad assembly of claim 1 , wherein an interior subset of the one or more mid nodes comprises an intersection of at least three filaments of the plurality of interconnected filaments.
4. The microlattice pad assembly of claim 1 , wherein each interior filament intersects at least two other filaments at a respective mid node of the one or more mid nodes.
5. The microlattice pad assembly of claim 1 , wherein a respective mid node of the one or more mid nodes comprises an intersection of at least two other filaments of the plurality of interconnected filaments.
6. The microlattice pad assembly of claim 1 , wherein the anatomical feature comprises a wearer's head.
7. The microlattice pad assembly of claim 1 , wherein:
the first surface is contoured the anatomical feature; and
the second surface is coupled to an inner surface of a helmet shell.
8. The microlattice pad assembly of claim 7 , wherein the second surface is contoured to the inner surface of the helmet shell.
9. The microlattice pad assembly of claim 7 , wherein an impact mitigation layer is disposed between the inner surface of the helmet shell and the first pad layer.
10. The microlattice pad assembly of claim 1 , wherein each interior filament intersects with at least two other filaments of the plurality of interconnected filaments to form the one or more mid nodes between the respective first end and the respective second end of the respective interior filament.
11. The microlattice pad assembly of claim 1 , wherein the first pad layer comprises an open structure.
12. The microlattice pad assembly of claim 1 , wherein the first pad layer is 3D printed.
13. A helmet comprising:
a shell; and
a layer comprising one or more pads, wherein the layer is contoured to an anatomical feature of a wearer, wherein the one or more pads comprise a microlattice structure including a plurality of interconnected filaments that are straight and extend obliquely from a first end at a first surface to a second end at a second surface, wherein:
the plurality of interconnected filaments includes a plurality of interior filaments;
the respective first end of each interior filament of the plurality of interconnected filaments connects with the respective first ends of at least two other filaments of the plurality of interconnected filaments to form a first set of end nodes at the first surface;
the respective second end of each interior filament of the plurality of interconnected filaments connects with the respective second ends of at least two other filaments of the plurality of interconnected filaments to form a second set of end nodes at the second surface;
each interior filament intersects with at least one other filament of the plurality of interconnected filaments to form one or more mid nodes between respective first end and the respective second end of the respective interior filament; and
the one or more pads further comprise a plurality of segments that are spaced apart, each segment of the plurality of segments directly contacting at least two end nodes of the second set of end nodes at the second surface.