67results about How to "Strong energy absorption" patented technology

The invention discloses a composite light structure with a high energy absorbing rate and good buffer ability and a structure main body. The composite light structure with the high energy absorbing rate and good buffer ability comprises a housing and an inner support, wherein the housing is sealed and hollow; the inner support is connected in the housing; the inner support is of a dot matrix structure; the inner support comprises a plurality of unit cells which are arranged according to a preset rule; and each cell unit is in the shape of a framework comprising a plurality of supporting rods. The composite light structure with the high energy absorbing rate and good buffer ability and the structure main body disclosed by the invention have the characteristics of relatively small weight, relatively high specific areas, strong energy absorbing ability and relatively strong buffer ability.

The invention discloses an energy-absorbing method based on a combined hybrid cross-linked dynamic polymer. The energy-absorbing method realizes energy absorption by using the combined hybrid cross-linked dynamic polymer containing at least two boron-containing dynamic covalent bonds and common covalent cross-linking formed by a common covalent bond. Through introduction of the boron-containing dynamic covalent bonds with different dynamic natures and combination of the boron-containing dynamic covalent bonds with the common covalent bond, polymeric materials of abundant structures and with awide controllable range and diversified properties can be prepared. Due to the difference between the different boron-containing dynamic covalent bonds in the dynamic polymer, the dynamic polymer canpresent hierarchical dynamic reversible effects, so the dynamic polymer shows good energy dissipation and energy absorption characteristics and has toughening, damping and impact-resisting effects onmaterials in specific structures. The dynamic polymer of the invention is applicable to the body protection of people in exercises and daily life, the body protection of the military police, explosionprevention, protection in airborne landing and aerial delivery, collision prevention of automobiles, anti-impact protection of electronic products and electric appliances, etc.

The invention discloses an anti-collision structure of a submerged floating tunnel. The anti-collision structure of the submerged floating tunnel is characterized in that the anti-collision structure is composed of anti-collision energy dissipation casing pipes covering the outer wall of the floating tunnel, anti-collision pipe sections capable of being disassembled and assembled independently are arranged on the axial section of the anti-collision energy dissipation casing pipes, the anti-collision pipe sections are pipe pieces arranged on the outer wall of the floating tunnel in the periphery direction in a sectioned mode, all the pipe pieces are fixedly connected to the outer wall of the floating tunnel through high-strength bolts, and the axial direction is the passage direction of the submerged floating tunnel. All the pipe pieces are in a multi-layer composite structure which comprises a polyurethane elastic panel located on the surface and an energy dissipation cushion layer located in the inner layer, a closed pressure-bearing water cavity is formed between the polyurethane elastic panel and the energy dissipation cushion layer, and the pressure-bearing water cavity is filled with pressure-bearing water. The anti-collision structure is applied to the submerged floating tunnel, is large in elasticity, resistant to corrosion and capable of bearing collision of large-tonnage ships and sufficiently absorbing impact energy.

The invention discloses a force-responsive polymer foam particle and a preparation method thereof; under the action of mechanical force, force-sensitive groups and/or force-responsive components in the force-responsive polymer foam particle undergo chemical and/or physical changes, so that the foam particles form force response. In the polymer foam particle, a force-sensitive group/force responsecomponent with a force response characteristic is introduced, so that a force-responsive foam product with a wide controllable range, and a rich structure and various performances can be prepared. Theforce response polymer foam particle can be used for producing foam packaging materials, impact-resistant protective materials, damping materials, buffer materials, silencing materials, thermal insulation materials and the like with a force response function so as to be widely applied.

The invention discloses an automobile energy absorbing device with negative poisson ratio. The automobile energy absorbing device with the negative poisson ratio comprises a circular disc-shaped top plate (1) and a circular disc-shaped base (2); a thin-walled inner cylinder (3) and a thin-walled outer cylinder (6) are arranged between the top plate (1) and the base (2); one end of the inner cylinder (3) is fixedly connected with the base (2); the other end of the inner cylinder (3) is fixedly connected with the top plate (1); one end of the outer cylinder (6) is fixedly connected with the base (2); the other end of the outer cylinder (6) is fixedly connected with the top plate (1); a plurality of overlapped negative poisson ratio modules (4) are sleeved between the inner cylinder (3) and the outer cylinder (6); and an energy absorbing filler (7) is mounted on the internal side of the inner cylinder (3). The automobile energy absorbing device with the negative poisson ratio has the advantages of better energy absorbing effect and stabler structure.

The invention discloses a four-stage anti-collision buffer mechanism, which comprises a first-stage anti-collision mechanism and a second-stage anti-collision mechanism, and the first-stage anti-collision mechanism is connected with the second-stage anti-collision mechanism. The present invention adopts the design of two-stage four-stage buffer anti-collision mechanism, arc tube and honeycomb body anti-collision module. It is light, can effectively deal with various levels of impact, and has a stronger energy absorption effect to better protect the safety of the vehicle and personnel involved in the accident. The anti-collision mechanisms and anti-collision modules at all levels are independently mounted in the steel frame and connected with high-strength bolts, which can be easily disassembled and replaced. When the vehicle is impacted to different degrees, the degree of damage to each anti-collision mechanism and anti-collision module is also different. At this time, the anti-collision mechanism or anti-collision module can be selectively replaced according to the specific damaged parts, effectively solving a set of problems. The disadvantage that the device is only collision resistant once.

The present invention discloses polymer foam particles with skin and dilatancy and a preparation method thereof. The polymer foam particles with the skin and the dilatancy have skin structures and thedilatancy, wherein the dilatancy is realized by at least one mechanism in vitrification dilatancy, dynamic dilatancy, entanglement dilatancy, dispersion dilatancy and pneumatic dilatancy. The polymerfoam particles with the skin and the dilatancy can be used for producing package materials with the dilatancy and the slow rebound properties, anti-impact protective materials, damping materials, buffer materials, sound-absorbent materials, thermal insulation materials and the like, so that the polymer foam particles are widely applied.

The invention discloses a force-induced responsive hybrid cross-linked dynamic polymer which is characterized by comprising at least one covalent cross-linked network, non-dynamic covalent bonds of atleast one covalent cross-linked network are covalently cross-linked above the gel point of the covalent cross-linked network, and at least one cross-linked network contains dynamic covalent cross-linking; wherein at least one force-sensitive group is contained; wherein at least one dynamic covalent bond is contained; wherein a supramolecular interaction is optionally contained. The polymer is endowed with certain strength and stability due to covalent cross-linking; due to dynamic covalent bonds, the polymer can show functional characteristics such as stimulus responsiveness, and has the effects of self-repairing, shape memory, toughening and the like on the material in a specific structure; the force-sensitive group can be chemically and/or physically changed under the action of mechanical force, so that the polymer realizes force-induced response. The dynamic polymer can be widely applied as a self-repairing material, a tough material, a sealing material, an adhesive and the like with force-induced response performance.

The invention relates to a novel sucker and spring type energy dissipation damper. The novel sucker and spring type energy dissipation damper comprises a steel rod arranged between two vertical pillars. The two ends of the steel rod are connected with elastic connectors and rubber suckers, and the elastic connectors are sleeved with the rubber suckers. The vertical pillars are provided with rubber sealing surfaces, and the rubber suckers are adsorbed to the rubber sealing surfaces. The two ends of each elastic connector are connected with the corresponding vertical pillar and the inner side of the corresponding rubber sucker through fixing mechanisms. The energy dissipation damper integrates spring type energy dissipation and sucker type energy dissipation, and adopts two connecting modes, namely connection between the springs and the vertical pillars and connection between the rubber suckers and the rubber sealing surfaces on the vertical pillars. The two connecting modes work at the same time under the action of earthquake loads, and the energy generated by an earthquake can be more effectively absorbed through the co-action of the inside and outside air pressure difference of the vacuum suckers and the pulling and pressing of the springs.

The invention discloses a force-induced response dynamic polymer. The polymer chain skeleton contains at least one force-sensitive group and at least one boron-containing dynamic covalent bond; wherein the polymer also optionally contains at least one supramolecular interaction; under the action of mechanical force, the force-sensitive group in the dynamic polymer is subjected to chemical and/or physical change to realize force-induced response. According to the dynamic polymer, the force-sensitive group with a force-induced response characteristic, the boron-containing dynamic covalent bondswith different dynamic properties and the optional supramolecular interaction are introduced, so that the force-induced response dynamic polymer material with a wide controllable range, a rich structure and various properties can be prepared. The force-induced response dynamic polymer can be widely applied as a functional coating with a force-induced response function, a self-repairing material, an energy storage device material, an energy absorbing material, a photoelectric device material, a mechanical probe and the like.

The invention discloses an ultrathin vehicle-mounted magnetic suspension flywheel battery for an electric vehicle, and a working method thereof. A motor bracket, an axial magnetic flux motor, a flywheel, an inner stator of a five-degree-of-freedom magnetic bearing, a coil and a permanent magnet are coaxially arranged in a shell from top to bottom, and the flywheel consists of an upper layer, a middle layer and a lower layer which are continuous; an upper annular groove is formed in the middle of the upper annular layer of the upper flywheel, the axial flux motor is placed in the upper annular groove, and an annular inner groove, a middle annular cavity and a lower annular groove are communicated and jointly used for placing the inner stator, the coil and the permanent magnet of the five-degree-of-freedom magnetic bearing; and the five-degree-of-freedom magnetic bearing comprises an axial magnetic bearing, a repulsion magnetic bearing, a torsion magnetic bearing and a radial spherical magnetic bearing from inside to outside. The mode that magnetic bearings with different properties are reused is adopted, advantage complementation is achieved, the bearing capacity and control precision of magnetic bearing supporting can be improved, the stability of a flywheel is remarkably improved, and the problem that the loss of a control coil is large due to complex working conditions can be effectively solved.

The invention discloses an energy absorption method based on a hybrid cross-linked dynamic polymer. The absorption method employs a hybrid cross-linked dynamic polymer composed of covalent cross-linking formed by a covalent bond, and at least one of second group supramolecular interactions as well as an optional first group supramolecular interaction to absorb energy. Specifically, the second group supramolecular interactions include ion interaction, ion-dipole interaction, and subject-object interaction, metallophilic action, dipole-dipole interaction, halogen bond action, cation-pi interaction, anion-pi interaction, benzene-fluorobenzene interaction, pi-pi stacking interaction, ion hydrogen-bond interaction and free radical cation dimerization interaction. The first group supramolecularinteraction includes hydrogen-bond interaction and metal-ligand interaction. The dynamic polymer adopted by the invention can provide good damping, shock absorption, sound insulation, noise elimination, shock resistance and other functions when used as an energy absorption material, and is especially suitable for application to body protection, explosion protection, airborne landing and airdrop protection, automobile collision prevention, impact protection of electronic and electrical products, and other aspects.

The invention provides a manufacturing method of a nickel-titanium alloy component, and the nickel-titanium alloy component. The manufacturing method comprises the following steps: 1) nickel-titanium alloy powder is pre-arranged to form a to-be-treated layer, and in the nickel-titanium alloy powder, the atomic percent of Ni element is 49.8%-50.8%, and the balance is Ti atoms; 2) laser melting treatment is carried out on the to-be-treated layer according to printing process parameters to form a target layer; 3) the step 1) to the step 2) are repeatedly executed, and the nickel-titanium alloy component is formed; in the laser melting treatment, the laser power ranges from 90 W to 150 W, and the laser scanning speed ranges from 400 mm/s to 1200 mm/s; and the nickel-titanium alloy component is of a porous structure. The method is simple and easy to operate, the raw materials and the manufacturing parameters of the nickel-titanium alloy component are limited, the prepared nickel-titanium alloy component can show high shape recovery after large deformation greater than or equal to 50%, and a high shape recovery rate can still be kept after multiple times of cyclic deformation.

The invention discloses an automobile collision energy absorption control device, a method, a storage medium and an electronic device, the device comprises an electromagnetic energy absorbing box, anacceleration sensor and a controller, wherein, the electromagnetic energy absorbing box comprises a first electromagnet and a second electromagnet. The first electromagnet is connected with an anti-collision beam of the vehicle. The second electromagnet is connected with a longitudinal beam connecting plate of the vehicle. The first electromagnet is opposite to the second electromagnet in the samepole; the acceleration sensor is used for acquiring acceleration information of the vehicle; the controller is used for controlling the currents of the first electromagnet and the second electromagnet according to the acceleration information. The invention obtains the acceleration information of the vehicle in real time, according to the acceleration information, the currents of the first electromagnet and the second electromagnet are controlled, and the distance between the first electromagnet and the second electromagnet is changed according to the same polarity repulsion principle, so that the energy absorption ability of the electromagnetic energy absorbing box is automatically adjusted, and the energy absorption ability of the electromagnetic energy absorbing box is strong and the deformation is small in the collision process, the volume of the electromagnetic energy absorbing box is reduced, and the cost is low.

Belong to the field of material preparation, the invention relates to a preparation method of a rubber foam material. The method is characterized by: preparing ingredients, adding EPDM raw rubber intoan internal mixer, after the torque becomes stable, adding a foaming agent, zinc oxide and stearic acid; then mixing filler, paraffin oil, a vulcanizing agent and a co-vulcanizing agent; after discharging, conducting thin-passing on an open mill and performing batching out, and performing standing for standby use; subjecting the rubber compound to sample cutting, then putting the cut rubber compound on a plate vulcanizing machine, and conducting vulcanization foaming by die pressing; conducting laminating compounding on the rubber compound, and putting the product into a die for foaming vulcanization, thus obtaining the rubber foam material with gradient-varying foaming density in the vertical direction. Through improvement of the prior art, the EPDM rubber foam material with gradient-varying foaming density along the thickness direction is prepared, under the circumstance of a constant laminate thickness, with the decrease of the dosage of the interlayer foaming agent, the tensile strength and elongation at break gradually increase, and under a high stress, the gradient EPDM foam material has stronger energy absorption effect than the traditional homogeneous rubber foam materials.

The invention discloses a novel automobile energy absorption box which comprises core bodies and a wrapping layer, wherein each core body is obtained by rolling composite unidirectional carbon fiber prepreg cloth into a cylinder; the composite unidirectional carbon fiber prepreg cloth is formed by stacking and curing 6-12 layers of unidirectional carbon fiber prepreg cloth; the wrapping layer is formed by stacking and curing 6-12 layers of unidirectional carbon fiber prepreg cloth; the wrapping layer wraps and fixes at least two or more core bodies; and the adjacent core bodies are tightly attached to each other. The novel automobile energy absorption box is prepared by carrying out vitrification heat treatment through a three-stage heating method. The novel automobile energy absorption box is prepared through the process routes of cutting, laying, vacuumizing, hot pressing, vitrifying, polishing, slotting and the like, an existing automobile energy absorption box can be partially or completely replaced, and the problems that an automobile energy absorption box is low in specific energy absorption, large in weight, poor in energy absorption capacity, too high in cost and the like are solved.

The invention discloses an energy absorption structure optimization method taking an expected force response process as a target, and the method comprises the steps: setting a proper expected force response curve, continuously updating the value of a target function in an optimization process in an iteration mode so as to obtain a new finite element model, and enabling an actual force response curve of a structure to be gradually close to the expected force response curve. And the energy absorption capacity of the structure is improved. According to the method, the deformation mode of the thin-walled tube can be changed, low-energy-absorption Euler deformation is changed into high-energy-absorption progressive buckling deformation, and multiple energy absorption evaluation indexes can be improved at the same time. The optimized actual force response curve of the thin-walled tube is closer to the expected force response curve. The energy absorption component obtained through the methodcan generate an ideal deformation mode, more impact kinetic energy is dissipated, and great guiding significance is achieved for design of energy absorption devices of various vehicles.

The invention relates to an assembling functional restorable steel skeleton concrete combined column and an installation method, which belongs to the technical field of structural engineering. The assembling functional restorable steel skeleton concrete combined column comprises a group of steel pipe main columns, a steel pipe auxiliary column, a main and auxiliary energy consumption connecting bridge and a full-assembling connecting assembly; the full-automatic connecting assembly comprises a plurality of arc leg connecting members and a plurality of pairs of outer reinforced ring tiles, theouter reinforced ring tiles are spliced to form a circular outer reinforcing ring to tightly lock the steel tubular column; the main column and the auxiliary column are connected by utilizing the C-shaped arc leg connecting member and the full-assembling connecting assembly by virtue of the main and auxiliary column energy consumption connecting bridge to form the functional restorable steel skeleton concrete combined column; and concrete is poured into the steel tubular column. The bridge is provided with an elliptic through hole, so that the stress concentration of the bridge when in earthquake can be avoided, the absorption capability is excellent, more earthquake energy is consumed, the suffering of the main column and the auxiliary column when in earthquake can be reduced, the energyconsumption of an energy consumption component can be damaged, and the structural shock absorption performance is greatly improved.

The invention relates to a flexible supporting structure and method for the rock burst roadway, the supporting structure comprises a thin spraying lining layer, epoxy resin grouting materials in roadway surrounding rock grouting holes and anchor cables, and the thin spraying lining layer on the surface of the roadway, the epoxy resin grouting materials injected into the roadway surrounding rock grouting holes and the anchor cables distributed on surrounding rock around the roadway are matched; and a spatial multi-layer energy absorption supporting structure of roadway surface reaction type resin thin spraying layer supporting, roadway broken surrounding rock epoxy resin material grouting and roadway deep anchor cable flexible supporting is formed. The supporting method comprises the following steps that: a reaction type resin thin spraying layer material is sprayed on the surface of a roadway after the roadway is tunneled until the reaction type resin thin spraying layer material is cured to form a thin spraying lining layer; drilling holes are constructed around a roadway, then an anchoring agent is fed into the drilling holes, then an anchor cable is inserted and connected with a drilling machine, the drilling machine is started to evenly stir the anchoring agent, a tray is installed after the anchoring agent is solidified, and the anchor cable is tensioned to preset anchoring force; roadway surrounding rock grouting holes are constructed in the periphery of the roadway, and epoxy resin grouting materials are injected into the holes regularly.