708 results about "Non-Newtonian fluid" patented technology

The invention discloses an ultra-precise curved surface finishing method based on non-Newtonian fluid shear thickening effect. The method includes: adding abrasive particles or micropowder into non-Newtonian fluid with shear thickening effect to prepare non-Newtonian fluid polishing solution, wherein the non-Newtonian fluid accounts for 50%-90% of the mass of the polishing solution, the abrasive particles or the micropowder account for 10%-50% of the mass of the polishing solution, and the particle size of the abrasive particles or the micropowder ranges from 0.05 micrometer to 50 micrometers. Relative motion is generated between a workpiece and the polishing solution during polishing, shear thickening is generated at a contact portion of the polishing solution and the workpiece under shearing action, viscosity of the polishing solution in the contact area is increased to enhance holding force to the abrasive particles or the micropowder, and removal of workpiece surface materials is achieved under the micro cutting or chemical mechanical action of the adding abrasive particles or micropowder with polishing effect in the polishing solution on the workpiece, so that polishing of the workpiece surface is achieved. The ultra-precise curved surface finishing method based on the non-Newtonian fluid shear thickening effect can achieve efficient and high-quality polishing to various curved surfaces, in particular to complex curved surfaces and has great economic and social benefits.

A body limb movement limiter restrains the movement of a person's arm so as to protect the person's shoulder or restrains the movement of a person's lower leg with respect to the upper leg so as to protect the person's knee. The device uses a housing having a reel disposed therein with a tether attached thereto and a shear thickening non-Newtonian fluid disposed within the housing so that the fluid acts on the reel during a payout procedure of the tether. The housing is attached to a strap secured about the torso of the person while the free end of the tether is secured about the person's arm. Alternately, a pair of arms are pivotally secured to each other within a housing having the non-Newtonian fluid therein for limiting movement of one arm with respect to the other.

Vibrating dental devices and accessories are provided, including a unique snap fit dental plate and vibrator connection; risers for adjusting the thickness of a dental plate; a pointer or wand that can be clamped onto a dental plate to reach even severely misaligned teeth; a cushioned dental plate having a non-Newtonian fluid therein that allows conformation of the cushion to the dentition, but hardens on use to allow the transmission of vibration to the teeth. Accessories such as carrying cases and docking stations are also provided.

An ultra-precision machining device based on non-Newtonian fluid shear thickening and an electrolysis composition effect comprises a polishing tool, a polishing tool clamp, a workpiece clamp and a polishing pool, wherein the polishing tool is located in the polishing pool, polishing liquid is contained in the polishing pool, a workpiece on the workpiece clamp is located in the polishing pool, and a gap is formed between the workpiece and the polishing tool; the workpiece clamp is connected with a workpiece driving mechanism, an electric conducing part of the polishing tool clamp is connected with a polishing tool driving mechanism, an electric conducting part of the workpiece clamp is connected with an anode of a power source, the polishing tool clamp is connected with a cathode of the power source, and abrasive particles or micro powder or electrolyte components are added into non-Newtonian fluid with the shear thickening effect to form the polishing solution. The ultra-precision machining device is wide in application range, high in efficiency and quality, low in cost, simple in device structure and easy to control.

Occlusion devices, earpiece devices and methods of forming occlusion devices are provided. An occlusion device is configured to occlude an ear canal, but other biological and non-biological conduits or chambers can be occluded using the devices and methods herein. The occlusion device includes an insertion element and at least one occluding member or element (which can be expandable) disposed on the insertion element. The occluding member is configured to receive a medium via the insertion element and is configured to expand, responsive to the medium, to contact the ear canal. Alternatively, the occluding member is made of a non-Newtonian fluid and can be enclosed by a balloon or not. Physical parameters of the occlusion device are selected to produce a predetermined sound attenuation characteristic over a frequency band. Use of a non-Newtonian fluid provides additional options or variables in customizing or designing a predetermined sound attenuation characteristic.

A machining device based on a non-Newtonian fluid shear thickening mechanism polishing method comprises a workbench, a polishing tool system, an abrasive fluid circulation device and a computer control module, wherein the polishing tool system is installed on a portal frame of the workbench, an inlet of the abrasive fluid circulation device is communicated with an abrasive backflow opening in the workbench, and the workbench, the polishing tool system and the abrasive fluid circulation device are respectively connected with the computer control module. The machining device has the advantages that the application range is wide, the size of machined workpieces is not limited, the structure of the device is simple, the device is controlled easily, a computer controls the operation track of the device, the polishing process of non-Newtonian fluid abrasive fluid and the surfaces of the workpieces can be controlled effectively, a non-Newtonian fluid abrasive fluid circulation system is adopted, and the functions of removing abrasive dust, purifying, recycling, transporting and storing the abrasive fluid, and adjusting performance are achieved.

An ultrasonic control shear thickening and polishing method comprises the following steps of 1 adding a non-Newtonian fluid polishing solution mixed with abrasive particles and having the shear thickening effect into a polishing pond and fixing a workpiece on a clamp, wherein the clamp is located above the polishing pond; 2 starting a polishing solution circulating system to enable the non-Newtonian fluid polishing solution to be circularly pumped out of the bottom of the polishing solution and fed into the upper portion of the polishing pond; 3 starting an ultrasonic wave generating device, and meanwhile setting the vibration frequency and vibration amplitude to enable the non-Newtonian fluid polishing solution in the polishing pond to rapidly vibrate and produce a strong shear thickening phenomenon; 4 adjusting the clamp to enable the workpiece to perform relative motion, wherein the abrasive particles having the polishing effect produce the micro-cutting effect or chemical mechanical effect on the workpiece to remove materials on the workpiece surface, and accordingly the workpiece surface polishing is achieved. The invention further provides an ultrasonic control shear thickening and polishing device. The ultrasonic control shear thickening and polishing method and device is high in polishing efficiency and low in cost.

A device, system, and method for direct delivery of a therapeutic to a target site that utilizes the non-Newtonian characteristics of shear thinning and shear thickening to allow easy passage of a therapeutic through a delivery lumen yet facilitate retention of the therapeutic in the target site. The device, system, and method includes increasing the shear rate or shear stress of a non-Newtonian fluid having therapeutic properties thereby increasing or decreasing the viscosity of the non-Newtonian fluid.

The invention discloses a composite calcium-sulfonate-based tetrapolyurea lubricating grease and a preparation method thereof. With the weight of the lubricating grease as a reference, the lubricating grease comprises components of: (1) 10-70% of non-Newtonian fluid calcium sulfonate; (2) 1-10% of higher fatty acid calcium; (3) 1-15% of small-molecule inorganic acid calcium or organic acid calcium; (4) 0.5-30% of tetrapolyurea; and (5) 10-80% of lubricating base oil. According to the lubricating grease, calcium petroleum sulfonate or synthesized calcium sulfonate is adopted as a raw material, and the lubricating oil contains a composite calcium thickening agent and a tetrapolyurea compound. The lubricating grease has excellent extreme pressure wear resistance, ultra-long lubricating life, good adhesion, water resistance, colloid stability, high dropping point, thermal stability, corrosion resistance, and salt spray resistance.

A projectile is provided comprising a body with a channel that contains a non-Newtonian fluid. In various embodiments a plunger is located in the channel, wherein the plunger transmits a force to the non-Newtonian fluid upon interacting with a target, causing the non-Newtonian fluid to exert a pressure in the channel, and wherein the viscosity of the non-Newtonian fluid changes upon interacting with the target. By way of non-limiting example, the non-Newtonian fluid of embodiments of the present invention can comprise a shear-thickening fluid that increases its viscosity with at least the rate of shear upon interacting with the target.

A body limb movement limiter restrains the movement of a person's arm so as to protect the person's shoulder or restrains the movement of a person's lower leg with respect to the upper leg so as to protect the person's knee. The device uses a housing having a reel disposed therein with a tether attached thereto and a shear thickening non-Newtonian fluid disposed within the housing so that the fluid acts on the reel during a payout procedure of the tether. The housing is attached to a strap secured about the torso of the person while the free end of the tether is secured about the person's arm. Alternately, a pair of arms are pivotally secured to each other within a housing having the non-Newtonian fluid therein for limiting movement of one arm with respect to the other.

A method for transporting a substrate is provided. In this method, a non-Newtonian fluid is provided and the substrate is suspended in the non-Newtonian fluid. The non-Newtonian fluid is capable of supporting the substrate. Thereafter, a supply force is applied on the non-Newtonian fluid to cause the non-Newtonian fluid to flow, whereby the flow is capable of moving the substrate along a direction of the flow. Apparatuses and systems for transporting the substrate using the non-Newtonian fluid also are described.

A coupling mechanism includes a driven coupling for mating with a driving coupling. The driven coupling includes a cylinder flange, a concentric shaft that extends axially outwardly from the flange, and a cylindrical driven coupling member that extends axially outwardly from the concentric shaft. The driven coupling member comprises a flexible membrane that encases non-rigid fill material, such as, e.g., a flowable granular material or a non-Newtonian fluid. The driven coupling member has a non-twisted, triangular cross-section, and is configured such that, when it is operationally engaged with the driving coupling, the non-rigid material substantially solidifies, thereby providing a substantially non-flexible structure for the membrane. The driven coupling may be connected to, for example, a photoreceptor drum of a material supply module, and the driving coupling may be connected to a reprographic device.

A rheological performance analyzer of supercritical fluid-polymer system consists of polymer-supercritical fluid mixing unit and rheological performance analysis unit. It is featured as adding supercritical fluid unit based on thin tube rheological instrument for making it be able to be used to carry out analysis on rheological performance of polymer-supercritical fluid system.

The invention relates to the technical field of traffic speed limitation and in particular relates to a settleable deceleration strip based on a non-Newtonian fluid. The settleable deceleration strip based on the non-Newtonian fluid comprises a deceleration strip; a non-Newtonian fluid filler is arranged at an inner layer of the deceleration strip; a soft rubber bag is arranged on an outer layer of the non-Newtonian fluid filler; a hard rubber protective cover is arranged on an outer layer of the soft rubber bag; the hard rubber protective cover is fixed on the floor through a plurality of fixing bolts. The settleable deceleration strip based on the non-Newtonian fluid has dual functions of limiting speeds of vehicles and protecting vehicles; besides, the settleable deceleration strip may settle when vehicles pass through the settleable deceleration strip at low speeds, such that the vehicles can smoothly pass through the settleable deceleration strip; as a result, the comfort of driving is enhanced and the wear of vehicles is reduced; besides, the settleable deceleration strip is simple in structure, ingenious in design and high in practicability.

The invention provides an inner hole wall polishing device based on a non-Newtonian fluid shear thickening mechanism. The inner hole wall polishing device comprises a polishing pool, a polishing solution circulation system, a polishing tool and a workpiece clamp. A polishing solution is arranged in the polishing pool and is formed by adding abrasive particles or micro powder in non-Newtonian fluid having a shear thickening effect. The polishing tool is arranged in the polishing pool and a machining gap is kept between the polishing tool and an inner hole wall of a workpiece to be machined. The workpiece clamp is arranged below the polishing tool, and the polishing tool, the workpiece clamp and the workpiece to be machined are located below the liquid level of the polishing pool. The workpiece clamp is connected with a workpiece drive mechanism, and the polishing tool is connected with a polishing tool drive mechanism. A circulation inlet of the polishing solution circulation system is communicated with an outlet in the bottom of the polishing pool. A circulation outlet of the polishing solution circulation system is communicated with an inlet in the upper portion of the polishing pool. The inner hole wall polishing device based on the non-Newtonian fluid shear thickening mechanism is high in polishing efficiency, good in quality, low in cost, and simple in structure.

The invention discloses an eccentric auto-rotating large-caliber shape-preserving polishing device by means of atmospheric pressure application in the field of super-precision optic surface finishing. The eccentric auto-rotating large-caliber shape-preserving polishing device comprises a motor, a rotary joint, a sleeve, a spindle, a piston, a ball head, a polishing plate, a retainer ring, non-Newtonian fluid and a shape-preserving film. The polishing plate is of an eccentric auto-rotating structure and can generate Gaussian-like removal function with central peak. Air enters the air cylinder at the tail end of the spindle to push the piston to apply certain pressure on the polishing plate after passing the rotary joint and the hollow spindle, the non-Newtonian fluid can guarantee close fit of polyurethane and aspheric surface according to real-time deformation of the surface shape of a current contact area in the process of aspheric surface finishing, and stable removal function can be generated. The eccentric auto-rotating large-caliber shape-preserving polishing device is applicable to super-precision surface finishing of large-caliber aspheric-surface optic components.

Vibrating dental devices and accessories are provided, including a unique snap fit dental plate and vibrator connection; risers for adjusting the thickness of a dental plate; a pointer or wand that can be clamped onto a dental plate to reach even severely misaligned teeth; a cushioned dental plate having a non-Newtonian fluid therein that allows conformation of the cushion to the dentition, but hardens on use to allow the transmission of vibration to the teeth. Accessories such as carrying cases and docking stations are also provided.

The object of the present invention is to design a non-Newtonian fluid speed bump device, which is composed of a speed bump rubber shell, a cavity, an elastic rubber bladder, and a non-Newtonian fluid. There is a cavity in the rubber shell of the speed bump, an elastic rubber bag is arranged in the cavity, and a non-Newtonian fluid is arranged in the elastic rubber bag. The cross section of the rubber shell of the speed bump is arc-shaped. When the car passes by at high speed, the rubber shell of the speed bump is quickly stressed, and the elastic rubber bag in the cavity is quickly stressed, and the elastic rubber bag quickly transmits the force to the non-Newtonian fluid. The non-Newtonian fluid is not deformed much, and the rubber shell of the speed bump is not deformed much. play a blocking role. When there are low-speed vehicles such as bicycles or cars passing by at low speed, the rubber shell of the speed bump is relatively slow in force, and the elastic rubber bag in the cavity is relatively slow in force, and the elastic rubber bag transmits the force to the non-Newtonian fluid, and the non-Newtonian fluid deforms Larger, the lower limit of the deformation of the top of the rubber shell of the speed bump, the resistance of the vehicle passing through is small, and the vehicle can pass more smoothly.

The invention provides an establishment method for a free surface flow model in a moving particle semi-implicit algorithm, comprising the following steps of: introducing a turbulence model which comprises a static Smagorinsky model and a dynamic Smagorinsky model in the form of Lagrange; treating a non-Newtonian fluid having a constitutive equation like mu = f(the absolute value ofgamma) by adopting a variable-viscosity Newtonian fluid model; and introducing a cubic spline kernel function, discretizing the shear stress of the non-Newtonian fluid by adopting the divergence discretization scheme of a smooth particle fluid dynamic method, and treating the free surface flow of the non-Newtonian fluid. According to the method provided by the invention, the sub-particle stress model of turbulence can be considered, and the method provided by the invention can be used for calculation for the non-Newtonian fluid.

Method and apparatus for estimating an apparent viscosity of a non-Newtonian fluid. The results may be used for selecting equipment for pumping systems.

The object of the invention relates to a dildo for sexual stimulation, comprising a tubular body (1) with a hollow structure made of a smooth material, such as silicone or rubber, having a shape and size similar to a penis, filled with a non-Newtonian fluid (2), the viscosity of which increases as the tension gradient applied thereto increases.

There is provided a fluid analysis method and its device which are capable of easily analyzing a normal stress difference of a low-viscosity fluid in addition to that of a high-viscosity fluid. A shearing fluidity is applied to a non-Newtonian fluid within a lateral-side gap by pushing a cylindrical bob into a container. At that time, reactive force applied to the cylindrical bob is measured. Then, by practicing an arithmetic process in a given form using the reactive force and each of conditions input by a user, the normal stress difference of the low-viscosity non-Newtonian fluid which is hard to form in a solid state can be certainly determined. Thus, with respect to the low-viscosity non-Newtonian fluid in addition to the high-viscosity non-Newtonian fluid, the normal stress difference can be easily analyzed.

The invention discloses an ultra-precision flexible chemical mechanical polishing device and method for a micro bearing core element. The core element comprises an inner ferrule, a retainer, a rollingbody and an outer ferrule. The polishing device comprises an element rotation module, an outer ferrule steering module, an element clamping module, a polishing liquid pool rotation module and a support. The element clamping module provides an inner ferrule clamp, a retainer clamp, a rolling body clamp and an outer ferrule clamp in a targeted manner. The polishing method comprises the steps of installing and debugging the polishing device, preparing flexible chemical mechanical polishing liquid, setting polishing process parameters, measuring the surface quality and conducting feedback. The flexible chemical mechanical polishing liquid comprises non-Newtonian fluid, 0.01-40 wt% of grinding particles, 0-10 wt% of an oxidizing agent, 0-10 wt% of a metal complexing agent, 0-5 wt% of a metal corrosion inhibitor and the balance water, and the pH value is 2.0 to 10.0. According to the ultra-precision flexible chemical mechanical polishing device and method, by optimizing the synergistic effect of the chemical reaction and the mechanical force of the force rheological effect, ultra-precision low-damage machining and complex curved surface shape-preserving machining of the surface of the core element can be achieved, and the device and method are green and environment-friendly.

Systems and methods for dispensing beverages are provided. Aspects relate to obtaining measurements regarding dispensing an ingredient (including the dispensing conditions of the ingredient) and determining whether to adjust dispensing conditions of at least one other ingredient. In one embodiment, at least one ingredient of a recipe is not dispensed based upon a dispensing measurement. The adjustment of one or more ingredients may comprise the use of adjustable orifices, which do not require separate measurements of ingredients before dispensing, but rather may measure ingredients' parameters (including dispensing conditions) as they are dispensed. Certain embodiments relate to devices and methods that may determine if an ingredient is a non-Newtonian fluid, and if so, may be configured to conduct measurements on such fluids, including, for example, the strain stress and strain rate as the fluid passes within a conduit.