A shock damper is disclosed. The shock damper may have a variable shear control apparatus through which a shear-thickening fluid may flow. In this manner, the shock damper may compress at different rates for different applied impulse forces, in response to the changing viscosity of the shear-thicken
A shock damper is disclosed. The shock damper may have a variable shear control apparatus through which a shear-thickening fluid may flow. In this manner, the shock damper may compress at different rates for different applied impulse forces, in response to the changing viscosity of the shear-thickening fluid.
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1. A shock damper comprising: a cylinder;a piston housed at least partially radially within the cylinder;a variable shear control apparatus housed at least partially radially within the cylinder, the variable shear control apparatus comprising: a first orifice;a second orifice; anda shear path dispo
1. A shock damper comprising: a cylinder;a piston housed at least partially radially within the cylinder;a variable shear control apparatus housed at least partially radially within the cylinder, the variable shear control apparatus comprising: a first orifice;a second orifice; anda shear path disposed between the first orifice and the second orifice; anda shear puck, wherein the shear path is disposed within the shear puck, andwherein a shear-thickening fluid travels through the shear path in response to the piston at least one of extending or compressing. 2. The shock damper according to claim 1, wherein the cylinder comprises a first chamber in fluid communication with the first orifice; andthe piston is in fixed mechanical communication with the variable shear control apparatus and comprising a second chamber in fluid communication with the second orifice. 3. The shock damper according to claim 1, wherein the shear path comprises a path shape comprising a spiral. 4. The shock damper according to claim 1, wherein the shear-thickening fluid is selected to operate in a shear-thickening region in response to the piston at least one of extending or compressing. 5. The shock damper according to claim 1, wherein the shear-thickening fluid is selected to operate in at least two of a shear-thickening region, a shear-thinning region, or a nominal equilibrium region in response to the piston at least one of extending and compressing. 6. The shock damper according to claim 1, wherein the shear-thickening fluid comprises a colloidal dispersion comprising: a liquid; anda plurality of particles, wherein each particle comprises at least one of a condensed polymer, an oxide, or a metal suspended in the liquid,wherein a viscosity of the shear-thickening fluid is a function of an applied shear stress. 7. The shock damper according to claim 6, wherein each of the particles further comprises a grafted polymer brush. 8. A method of operating a shock damper comprising: translating a variable shear control apparatus comprising a first orifice and a shear path in response to a piston at least one of extending or contracting,wherein the shear path is disposed within a shock shim stack and comprises a path shape;deflecting the shock shim stack in response to the translating;changing the path shape in response to the deflecting; anddirecting a shear-thickening fluid into the first orifice and through the shear path in response to the translating;varying a viscosity of the shear-thickening fluid in response to the directing;varying the viscosity of the shear-thickening fluid further in response to the changing the path shape; anddamping the at least one extending and retracting in response to the varying. 9. The method of operating the shock damper according to claim 8, further comprising: directing the shear-thickening fluid out a second orifice in response to the translating. 10. The method of operating the shock damper according to claim 8, wherein the varying further comprises increasing the viscosity of the shear-thickening fluid. 11. The method of operating the shock damper according to claim 8, wherein the varying further comprises decreasing the viscosity of the shear-thickening fluid. 12. A shock damper comprising: a cylinder;a piston housed at least partially radially within the cylinder;a variable shear control apparatus housed at least partially radially within the cylinder, the variable shear control apparatus comprising: a first orifice;a second orifice; anda shear path disposed between the first orifice and the second orifice; anda shock shim stack, wherein the shear path is disposed within the shock shim stack, andwherein a shear-thickening fluid travels through the shear path in response to the piston at least one of extending or compressing. 13. The shock damper according to claim 12, wherein the cylinder comprises a first chamber in fluid communication with the first orifice; andthe piston is in fixed mechanical communication with the variable shear control apparatus and comprising a second chamber in fluid communication with the second orifice. 14. The shock damper according to claim 13, wherein the shear path comprises a path shape that changes in response to a deflection of the shock shim stack. 15. The shock damper according to claim 12, wherein the shear-thickening fluid is selected to operate in a shear-thickening region in response to the piston at least one of extending or compressing. 16. The shock damper according to claim 12, wherein the shear-thickening fluid is selected to operate in at least two of a shear-thickening region, a shear-thinning region, or a nominal equilibrium region in response to the piston at least one of extending and compressing. 17. The shock damper according to claim 12, wherein the shear-thickening fluid comprises a colloidal dispersion comprising: a liquid; anda plurality of particles, wherein each particle comprises at least one of a condensed polymer, an oxide, or a metal suspended in the liquid,wherein a viscosity of the shear-thickening fluid is a function of an applied shear stress. 18. The shock damper according to claim 17, wherein each of the particles further comprises a grafted polymer brush.
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이 특허에 인용된 특허 (17)
Bettin, Giorgia; Deshmukh, Suraj S.; McKinley, Gareth H., Active controlled energy absorber using responsive fluids.
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