771 results about "Elastic energy" patented technology

The invention relates to an oil deposition steam injection thermal recover multi-mode linkage three-dimensional simulation system. The system comprises a steam injecting system, an oil deposit model body, a burden pressure system, and a data acquiring and graph processing system, wherein the oil deposit model body is used for simulating an actual oil deposit; and the oil deposit model body comprises a shell of an oil deposit model, a heat insulating layer, a simulative oil deposit, a simulative straight well, a simulative horizontal well, a pressure guiding pipe, and a thermocouple and an interface of the thermocouple. The technical proposal realizes the simulation of steam thruput elastic energy, and the design of high-temperature and high-pressure oil deposit model body meets the requirements of well networks and well types for various assemblies.

A starting contour is defined surrounding around an elementary object delimited by a natural contour in a video image. On the basis of the starting contour, an original active contour is defined, formed by a set of nodes distributed on this starting contour, each node being formed by a point belonging to this starting contour and by an elastic energy function representative of the distance separating this node from a neighbouring node. With regards to a set of reference values representative of the contour of this object, the active contour is subjected to a convergent deformation under a blocking condition, by displacing at least one of the nodes of the original active contour toward the natural contour of the elementary object to generate a current active contour iteratively subjected to this convergent deformation.

Apparatus, systems, and methods may operate to receive radiated energy as scattered energy after the radiated energy interacts with a geologic formation, wherein the scattered energy is received at a sub-surface multi-channel sensor array that operates to transform the scattered energy into received signals, and wherein the radiated energy is provided by a sub-surface source of elastic energy; and to identify discontinuous features in the geologic formation by interferometric comparison of the received signals as elastic signals and / or electromagnetic signals among some sensors in the sensor array, or by time-reversal propagation of the received signals as elastic and / or electromagnetic signals in a numeric model of a volume of the geologic formation. Additional apparatus, systems, and methods are disclosed.

The present invention provides methods and direct cardiac contact diastolic recoil device to improve diastolic recoil of a heart and includes a biocompatible film attached to or enclosing one or more structural elements that store elastic energy during heart contraction and release energy during heart filling.

According to an aspect of the present invention, there is provided a nailing machine including: a housing; a motor that is accommodated in the housing; a plunger that plunges a nailing member; and a spring that is expanded or compressed by the motor to store an elastic energy therein and that accelerates the plunger by releasing the elastic energy, wherein a spring constant of the spring at one end of the spring in an expanding / compressing direction is set smaller than that of the spring at a center in the expanding / compressing direction.

The invention discloses a fracture-cave type carbonate reservoir waterflooding oil replacement recovery method, comprising the steps: 1, pilot flooding; in case of inadequate fracture-cave type reservoir elastic energy, pilot flooding is implemented within a cycle prior to normal waterflooding to determine well positions suitable for waterflooding oil replacement, and then waterflooding speed is determined according to the type of a reservoir body; 2, a proper amount of high specific gravity liquid having larger specific gravity than crude oil and insoluble with the crude oil is injected into the reservoir in order to fill in formation voidages and restore formation pressure; 3, well closing, replacement of the oil and the high specific gravity liquid is implemented by means of gravitational differentiation of the oil and the high specific gravity liquid, and the high specific gravity liquid sinks to the lower part of the reservoir body to form secondary bottom water, thereby driving oil upwards and lifting oil-water interface; and 4, well is opened for oil recovery when wellhead pressure is recovered to basically stable level. According to the invention, the replacement of crude oil and oilfield sewage is implemented by injecting the high specific gravity liquid insoluble with crude oil, such as the oilfield sewage, into oil well, and the crude oil and the oilfield sewage are converged at the upper part of fracture cavity or at the bottom of higher well in order to achieve oil recovery once again.

This invention relates to a safety needle to prevent needle stick injuries. The invention provides a safety needle accessory comprising a hollow needle having a base end and a sharp end, a hub surrounding the base end of the needle and having a connector for connection to an injection device, a sleeve surrounding the hub and slidable relative to the hub in an axial direction, an elastically deformable member, and a pack having a closed end covering the sharp end of the needle and an open end exposing the connector of the hub and which is releasably mounted over the needle, hub and sleeve. The sleeve is slidable in a first axial direction from a first position in which the needle is fully or partially covered by the sleeve to a second position in which the needle is exposed, via an intermediate position between the first and second positions in which the sharp end of the needle projects from the sleeve, and in a second axial direction from the second position to a third position in which the needle is fully covered by the sleeve. The deformable member is deformed by the sleeve sliding from the first to the second position and the force for sliding from the second to the third position is provided by the stored elastic energy in the deformable member. The closed end of the pack has a removable cap at a position on the pack such that removal of the cap exposes the sharp end of the needle but not the sleeve when the sleeve is in the intermediate position.

A leg for use on hopping, running, jumping and walking machines. As incorporated into the bow leg hopper robot, a thrust actuator provides elastic energy to the leg which is automatically released during stance to control hopping height. Lateral motion is controlled by directing the leg angle at touchdown, which determines the angle of takeoff. The leg pivots freely on a hip bearing, and is automatically decoupled from the leg-angle positioner during stance to preclude hip torques that would disturb body attitude. Upright attitude is maintained without active control by allowing the body to hang from the hip joint. The leg may also be incorporated into multilegged running robots, and recreational vehicles.

The invention discloses a button-switched sprinkler and a switching method thereof. The switching method comprises the following steps of: 1firstly, pressing a button in slip connection with the sprinkler to relatively slip; 2 secondly, rotating a pawl by making the button act on a linkage seat of the pawl; 3 thirdly, rotating the pawl and rotating a ratchet wheel through the control end of the pawl, and simultaneously deforming an elastic claw of the pawl to store energy; 4 fourthly, rotating the ratchet wheel and drivingto drive a water distributing disc to rotate, accomplishing the switching of water outlet functions by using the water distributing disc when rotating the water distributing disc to the place, and meanwhile, making a stopping claw of the pawl abut against ratchets of the ratchet wheel to prevent the reversal of the ratchet wheel; and 5 fifthly releasing the pressing to reset the button, releasing the elastic energy of the elastic claw and driving the pawl to reset. The invention has the advantages that the button-switched sprinkler realizes one-way rotation by applying the ratchet wheel to be convenient for automatic positioning; different from the traditional front cover rotating ring switching mode, users only need to slightly pressure press the bottom button to realize the switching of the water outlet functions, so the switching method hasis convenient switching; and the button-switched sprinkler has stable structure, small switching force and good switching hand feeling.

The invention provides a safety head restraint device for actively buffering automobile collision. A supporting column is hinged at one end of a leaning rod; the other end of the leaning rod is fixedly arranged on a cylinder body at one end of a buffering supporting cylinder; a buffering supporting piston rod is arranged in the other end of the buffering supporting cylinder; the buffering supporting piston rod is fixedly arranged on an auxiliary supporting seat; and the auxiliary supporting seat is fixedly arranged at the upper end of a chair back. According to the invention, through the adoption of the buffering supporting cylinder, a buffering supporting effect is realized on the head restraint in the automobile collision process; as various elastic energy absorbing bag bodies are arranged in the head restraint, the collision energy can be first preferably absorbed; and as a buffering bracket is arranged at the back end of the active safe head restraint device, the collision energy can be further absorbed to reduce damages to heads of drivers. In addition, through the adoption of a cam and a locking pin, an auxiliary supporting rod can extend out of the head restraint at the moment of collision and is supported on the auxiliary supporting seat, an adverse consequence that the head restraint is tilted backward is prevented.

The invention provides an artificial foaming-oil huff and puff oil production method for a heavy oil reservoir. The method comprises the following steps: filling aqueous solution of foaming oil accelerant and nitrogen into the heavy oil reservoir, wherein the foaming oil accelerant comprises a foaming oil accelerant A, a foaming oil accelerant B and a foaming oil accelerant C of which the mass ratio is 1:1:1; soaking for 1 to 5 days; opening a well to produce oil in a certain production differential pressure range and stopping producing oil when the single-well daily oil production reaches single-well economic limit; repeating the step 1 to the step 3 and stopping production until the single-well cyclic oil production reaches cyclic economic limit, wherein the heavy oil reservoir has a reservoir thickness of over 2m, reservoir permeability of over 10*10<-3> mu<m2>, a reservoir temperature of lower than 120 DEG C, viscosity of crude oil of over 50mPas, oil saturation of over 30 percent and water saturation of over 50 percent. According to the artificial foaming-oil huff and puff oil production method for the heavy oil reservoir, which is provided by the invention, the viscosity of crude oil can be reduced and elastic energy of fluid can be increased so as to increase single-well productivity and a recovery ratio of an oil field.

A computer-implemented method is provided for physical face cloning to generate a synthetic skin. Rather than attempt to reproduce the mechanical properties of biological tissue, an output-oriented approach is utilized that models the synthetic skin as an elastic material with isotropic and homogeneous properties (e.g., silicone rubber). The method includes capturing a plurality of expressive poses from a human subject and generating a computational model based on one or more material parameters of a material. In one embodiment, the computational model is a compressible neo-Hookean material model configured to simulate deformation behavior of the synthetic skin. The method further includes optimizing a shape geometry of the synthetic skin based on the computational model and the captured expressive poses. An optimization process is provided that varies the thickness of the synthetic skin based on a minimization of an elastic energy with respect to rest state positions of the synthetic skin.

The invention discloses a single-leg robot jumping mechanism driven through a connecting rod. The single-leg robot jumping mechanism comprises a machine body, a thigh and a shank which are hinged in sequence. The thigh is provided with a jumping drive device for driving the shank to rotate. The hinged position of the machine body and the thigh is provided with a direction drive device for driving the thigh to rotate. The upper end of the shank is provided with a shank ejector plate hinged to the lower end of the thigh. A drive rod is arranged between the shank ejector rod and the jumping drive device. The drive device and the shank ejector rod are hinged to the two ends of the drive rod respectively, and an elastic energy storing piece is arranged between the thigh and the shank ejector plate. The direction drive device can drive the thigh to rotate to achieve the direction control. The jumping drive device and the direction drive device are close to the machine body, the rotational inertia of the thigh relative to the machine body is reduced, the energy consumption of a first drive motor can be reduced, and the moving stability and agility of robot movement are improved. The stability of a robot is improved through balancing fly wheels. The energy can be stored and buffering can be achieved through the elastic energy storing piece and balancing pieces.

The present invention relates to a kind of copper-base alloy containing at least one element selected from Sn, Ni, P, Zn, Si, Fe, Co, Mg, Ti, Cr, Zr and Al in 0.01-30 wt% except Cu and impurities. The alloy has the X ray diffraction strength ratio SND of at least 10, where Snd=I{220} / I{200}, with I{220} is the X ray diffraction strength in {220} plane and I{200} is the X ray diffraction strength in {200} plane. At the same time, the alloy has balanced conductivity, strength, rebound elasticity, hardness and bending performance as well as improved punching performance. The present invention also relates to the preparation process of the alloy.

A method and an apparatus for de-icing aerial cables are provided. The cable is gripped and slowly twisted for a predetermined number of turns within the elastic domain of deformation of the cable. Mechanical elastic energy is therefore accumulated in the cable. The cable is then released and untwisted under the spring back effect, releasing the energy accumulated therein which breaks and shakes off the ice accumulated on the cable.

The invention discloses a method for determining resilience of a prestressed circular film under a uniformly-distributed load. The method comprises the following steps: fixedly clamping the periphery of a circular film with radius of a, thickness of h, Young modulus of elasticity of E, poisson ratio of v and prestress of sigma O, applying a transverse uniformly-distributed load q on the circular film. On the basis of the static balance analysis on the axisymmetric deformation problem of the circular film, by utilizing a load measuring value q, the elastic energy U of the film after being deformed can be accurately determined.

The invention discloses a jumping robot of a locust-simulated turning joint lever ejecting mechanism, comprising a front leg with the functions of driving, supporting and shock absorption and a back leg with the functions of driving and turning joint lever elastic energy storage, wherein the front leg comprises a front leg power mechanism, a front leg motor output shaft, an eccentric cam, a front leg, a front leg spring and the like; and the back leg comprises a back leg power mechanism, a back leg motor output shaft, a shaft coupling, a back leg transmission shaft, a spring, a roller wheel, a back leg, a back leg sliding rotation shaft, a fork-shaped back leg retainer, a fork-shaped back leg retainer tail rod, a spring set, a fixed pull button, a rotary pull button, a screw pair, a sliding guide sleeve, a connecting spring bolt, a steel wire rope, a connecting steel wire rope bolt and the like. With the structural design of the eccentric cam, the front leg has the function of providing engine body promoting force through the elastic energy storage; by adopting the structural design of a movable rotation shaft and a movable pivot lever, the back leg realizes the functions of slow energy storage and rapid energy release in the ejecting mechanism through the combined design of the fixed pull button and the rotary pull button.

The embodiment of the invention discloses a method, a device and a system for determining a brittleness index of rocks. The method comprises the following steps: obtaining a stress strain curve of therocks; determining recoverable elastic energy of peak value strength, recoverable elastic energy of residual strength, pre-peak energy and post-peak energy according to the stress strain curve; determining rock cracking loss elastic energy according to the difference between the recoverable elastic energy of the peak value strength and the recoverable elastic energy of the residual strength; determining rock total cracking energy according to the sum of the pre-peak energy and the post-peak energy; calculating the ratio of the rock cracking loss elastic energy to the rock total cracking energy and determining the ratio as the brittleness index of the rocks. By adopting the method provided by the embodiment of the invention, the brittleness of the rocks can be more accurately evaluated.

The invention relates to the technical field of a safety protection device in the bridge engineering construction, in particular to an efficient low-cost flexible energy dissipation type pier anti-collision safety device. The invention aims at solving the problems that the safety of an automobile, pedestrians and a pier is difficult to be ensured when the automobile is rigidly collided with the pier in the prior art. The invention adopts a technical proposal at present: the efficient low-cost flexible energy dissipation type pier anti-collision safety device comprises a steel anti-collision wall which is formed by the sheathing of a big protection cylinder and a small protection cylinder; the inner part of the anti-collision wall is a hollow structure and filled with elastic energy dissipation materials; a horizontally-distributed spring component layer is arranged between the protection cylinder and the small protection cylinder; the bottom is arranged on a base steel plate, the external extension part of which is provided with an anchor in a perforating way; and the upper end and the lower end of the inner side of the small protection cylinder are respectively provided with an energy dissipation piece horizontally. The invention has the advantages of: 1) high safety and good effect; 2) simple structure, easy construction and convenient maintenance.

The invention belongs to the technical field of shoe material manufacturing, and particularly relates to a thermoplastic elastomer foaming shoe material and a preparation method thereof. The thermoplastic elastomer foaming shoe material is prepared from the following raw materials in parts by mass: 100 parts of a modified polyamide elastomer, 0.1 to 0.5 part of an antioxidant and 0 to 10 parts ofa nucleating agent, the modified polyamide elastomer at least comprises two polyamide elastomers so that the regulated and controlled melt strength is more excellent, a series of shoe foaming materials with higher foaming ratios and better elasticity are prepared through a supercritical fluid foaming technology, the foaming material has the advantages of low density, excellent resilience, excellent deformation resistance and the like, meanwhile, the material is applied to the field of sneakers, a force feedback mechanism is started for the whole running process, energy in each step of a weareris recycled and then released again, the light and efficient resilience property is guaranteed, and power can be provided for the wearer.

A parafoil for operation at high altitudes, in low density air, or at low airspeeds, and methods for opening same. Some versions of the parafoil comprise flexible members connected to the parafoil canopy. When the parafoil canopy is in a stowed configuration, the members are deformed, storing elastic energy. When the canopy is released from its stowed configuration, the members spring back to their undeformed shapes, thereby opening or assisting with opening the canopy. The flexible member may also be attached to a base structure, which is attached to the payload. The members may comprise rods or hollow tubes that can be flexed using a fulcrum near the base structure, or a spacer plate, so that the ends connected to the canopy are restrained by a parachute bag containing the stowed or packed canopy. The parachute bag can be opened prior to or during detachment of the parafoil from the flight vehicle.

A cartridge detachably mountable to a main assembly of an image forming apparatus includes: a frame; a flexible developer bag, provided with an opening and provided inside the frame, for containing a developer; and an elastic member for discharging the developer through the opening by acting on the developer bag. The elastic member is extended from a free state by contact with the developer bag, and elastic energy accumulated by extension of the elastic member acts on the developer bag to discharge the developer through the opening.

This invention is a power-driven wheelchair undercarriage device comprising a main carframe unit, a front-wheel set pivoted at front interconnecting piece of the main carframe unit, a elastic recovery unit joined between the main carframe unit and the front-wheel set, a driving wheel carrier unit pivoted with the front-wheel set, a connecting device pivoting the main carframe unit and the driving wheel carrier unit, and a rear-wheel set arranged at the main carframe unit back. When crossing barrier, the elastic recovery unit is compressed to release elastic energy, and the energy is enhanced by the front-wheel set backward withdrawing; meanwhile the connecting device drives the carframe unit to make the power-driven wheelchair have a best angular variable and contact counteracting force.

The invention provides a carbonate rock reservoir karst cave-fracture reservoir body water injection indication curve interpretation model. As for different compression coefficients of different reservoir medium karst caves and fractures, the model is used for distinguishing the influences on the water injection indication curve pattern from the elastic energy provided by the karst caves and the fractures, and considering the influences on the water injection indication curve pattern from oil-water two-phase elastic energy. The novel model can be used for distinguishing the different elastic compression coefficients of the karst caves and the fractures and calculating the respective proportions of the karst caves and the fracture reservoir body, thereby calculating the respective corresponding volumes.

The invention discloses a laser-assisted prestressed composite method for shot blasting, forming and strengthening. The method is as follows: firstly, a workpiece is deformed as expected in an elastic range through a mechanical preloading method; secondly, the elastic energy concentration region of a part is scanned with a laser beam; thirdly, shot blasting is carried out to the workpiece along a laser scanning path. When the method is adopted for forming, the thermal effect of the interaction between the laser and a material can reduce the deformation resistance (elastic modulus and yield strength) of the material in a laser action region, and can assist the part in shaping through an inhomogeneous thermal stress field established in the thickness direction of the part, thereby the compression bending forming amount, forming efficiency and forming precision of a shaped part can be remarkably improved; moreover, the shot blasting immediately carried out later can strengthen the strain of a heat action region, so as to improve structural mechanical property.

The invention relates to a particles-impact damper with an elastic support. The inner part of the particles-impact damper is provided with an elastic energy-storage component and a plastic impact energy-dissipation component. The invention is characterized in that the particles-impact damper is connected with a controlled main system through the elastic support and the natural vibration frequency of the particles-impact damper is not greater than that of the controlled main system. The elastic support can be a spiral spring, a plate spring or an elastic cushion; and free movement direction of the elastic support is identical to the vibration direction of the controlled main system. The particles-impact damper can effectively reduce acceleration in impact process and decrease impact on the controlled main system so as to consume vibration energy of the controlled main system to the maximum extent, reduce the energy retransmission to the controlled main system and alleviate the impact of ultraharmonics and subharmonic. The particles-impact damper can be applied to the vibration control of nonlinear systems with low frequency and dense modes.

The invention provides a fuel cell hybrid power car energy storage system based on elastic energy storage and an energy distribution method and relates to a fuel cell hybrid power car energy storage structure and an energy distribution method. The problems that a cell used in an existing hybrid power car is slow in charging and short in life and meanwhile pollutes environments are solved. According to the fuel cell hybrid power car energy storage system based on elastic energy storage and the energy distribution method, a fuel cell, a super capacitor and an elastic energy storage device are adopted for energy supplement, and the fuel cell adopts the mode of corresponding fuel supplement for charging and has the characteristics that charging is quick, and pollution is avoided; the super capacitor has the characteristics that the power density is high, and the circular life is long, and the defect that the power density of the fuel cell is low is made up; and the elastic energy storage device has been applied to power grid energy storage and has the characteristics that the energy storage capacity is large, pollution is avoided, and the life is long. The fuel cell hybrid power car energy storage system based on elastic energy storage and the energy distribution method are suitable for a power car provided with a composite energy storage system with the elastic energy storage device, the fuel cell and the super capacitor.

The invention belongs to the field of 4D printing manufacturing, and particularly discloses a 4D printing method of a functional gradient copper-based shape memory alloy intelligent component and a product. The method comprises the following steps: dividing a three-dimensional model of the intelligent component according to the required deformation amount and function in application, setting printing parameters of a large-deformation recovery area, a small-deformation recovery area and a bearing area, and printing the large-deformation recovery area, the small-deformation recovery area and thebearing area by taking copper-based memory alloy powder as a raw material in a 4D mode respectively so as to obtain the functional gradient copper-based shape memory alloy intelligent component composed of different phases. The product is obtained by adopting the 4D printing method. According to the 4D printing method of the functional gradient copper-based shape memory alloy intelligent component and the product, through controlling the forming process parameters and printing materials of different areas, continuous variation of components, structure and super-elastic energy is realized, sothat each area can adapt to the required deformation amount and function of the intelligent component in application.