340 results about "Energy absorbing" patented technology

The invention discloses a composite protective structure resistant to blast shock which is mainly a point truss honeycomb integral protective structure formed by a honeycomb tensile layer and a lattice truss-type compression resistance layer through welding spots and connecting keys, and a foam energy absorbing layer is added on the outer layer. According to the composite protective structure, theforce transmission path of a concrete protective structure under the action of blast is innovatively optimized, the resistance level of the protective structure can be greatly improved, and the structure ductility is improved; and the dispersion of concrete fragments in the structure can be restrained, and the phenomenon of blast and explosion-induced collapse of similar traditional concrete protective structures is eliminated.

The present disclosure provides energy absorbing materials and methods of fabricating the same. The energy absorbing materials of the present disclosure comprise a plurality of repeating cells, wherein each of the plurality of cells comprises a three-dimensional plate lattice, wherein a least a portion of plate lattice is prebuckled.

The invention discloses a lithium battery thermal runaway heat insulation buffer fire extinguishing protection device which comprises a box body and a box cover capable of being turned over to cover the box body in a sealing mode, a pressure relief opening is formed in the box cover or / and the box body, and a quenching flame arrester is installed in the pressure relief opening in a matched mode; wave energy absorption pieces are installed on the inner wall of the box body and are combined energy absorption pieces in a wave continuous shape or protruding single energy absorption pieces. According to the quenching flame arrester, nearby flames can be timely and effectively quenched, the flames are prevented from disordering and spreading, the fire extinguishing efficiency and the fire extinguishing strength are enhanced, and the quenching flame arrester located at the pressure relief opening or the exhaust opening not only has the flame quenching effect, but also has the pressure dredging or pressure relief effect; the explosion resistance is improved through the double-layer box plate, flame diffusion and explosion pressure dredging are jointly inhibited through the quenching flame arrester and the wave energy absorption piece, explosion impact and high-temperature conduction are resisted through the composite heat insulation buffer layer, the safety of a passenger cabin is guaranteed, and the device is suitable for aviation lithium battery emergency disposal scenes.

Provided is a thick steel plate which combines high strength, low yield ratio and high toughness, and which has excellent toughness at the joint even when subjected to high heat input welding in which the welding heat input exceeds 40 kJ / mm. A thick steel plate having a prescribed component composition and microstructure, and having an Mn concentration distribution in which the area fraction of an average Mn concentration region defined as a region having an Mn concentration of 0.9-1.1 times the average Mn content (mass%) is less than 90%; the area fraction of an Mn-rich region defined as a region having an Mn concentration of 1.15 times or more of the average Mn content (mass%) is 1.0% or more, the average circle-equivalent diameter of the Mn-rich region is 7.0 [mu] m or less, and the Charpy absorption energy vE0 at 0 DEG C is 70 J or more.

In an energy absorbing member (10), a basic unit (20) with a U-shaped cross-section comprising a press-molded article is formed by a first sheet section (41) and a pair of second sheet sections (42, 42). An inner surface (21) and an outer surface (22) of the basic unit (20) that has been configured having the U-shaped cross section are contours that do not have an undercut shape in a direction along a reference line (CL2). The first sheet section (41) and the pair of second sheet sections (42, 42) have imaginary parallelograms (90) that extend from a first end surface (51) to a second end surface (52) of the basic unit (20) and are respectively deviated around an axis (CL1). At least one of two diagonals (91, 92) of each imaginary parallelogram (90) is formed by a fold line.

Apparatus (100) for absorbing an impact is disclosed. The apparatus (100) comprises a connected array of tubular structures (101) defining a surface. Each tubular structure (101) has a wall (103) defining an interior region (104) of the tubular structure (101) extending substantially along an axial direction of said tubular structure (101). The axial direction of each tubular structure (101) extends substantially perpendicularly to the surface. The wall (103) of each of a plurality of the tubular structures (101) is at least partially discontinuous, such that said tubular structures (101) preferentially deform in the region of the discontinuity during an impact.

An energy absorbing system includes a structural member and a composite energy absorber including a first member arranged within the structural member. The first member has a first repeating geometric pattern extending in a first direction along a first length, a first width in a second direction transverse to the first direction, and a first height in a third direction transverse to the first and second directions. The first member is made of a composite material including first reinforcing fibers and a first polymer matrix.

The utility model relates to the technical field of expressway guardrails, in particular to an expressway anti-collision guardrail which comprises a fixed stand column, a movable stand column and an anti-collision device. The wave-shaped beam plates are continuously arranged along the edge of the road and are parallel to the fixed stand columns; and the horizontal connecting beam stretches across the corrugated beam plate and the fixed stand column, one end of the horizontal connecting beam is rotationally connected with the corrugated beam plate through a rotary connecting sleeve, and the other end of the horizontal connecting beam is rotationally connected with the fixed stand column through a buffer connecting sleeve. Through the arrangement of the rotary connecting sleeve and the buffer connecting sleeve, the wave-shaped beam plate can generate plastic deformation to absorb energy during collision and can also translate towards one side of the fixed stand column, and the translating motion drives the buffer connecting sleeve to rotate around the fixed stand column, so that the fixed limiting block sequentially collides with the limiting buffer plates; therefore, the energy absorption capability of the whole system is greatly enhanced.

A support plate and reinforcement member may be mounted within a hollow side sill between a rocker and crossmembers for a vehicle framework. The support plate may include flanges along either edge and a straight, projecting face between the flanges. The reinforcement member, mounted on the support plate proximate to an outer surface of the side sill, may include flanges along either edge and a wavy projecting face between the flanges. Contact portions of the projecting face for the reinforcement member may contact an interior of the side sill at regions aligned with where the side sill mounts to the crossmembers, with intervening portions of the projecting face, in areas adjacent energy absorbing crush cans, extending less far from the flanges. The intervening portions may also be laterally offset from the contact portions, to provide larger weld areas.

The invention discloses an anti-impact buffer pressure relief device for an underground mine roadway well wall. The anti-impact buffer pressure relief device aims at effectively absorbing and relieving damage of impact force to the well wall. The device comprises an energy absorption matrix, an energy absorption layer, a top plate and a bottom plate, wherein the energy absorption matrix consists of a plurality of energy absorption elements. The energy absorption element is used for absorbing impact or vibration energy transmitted downwards by the top plate, and impact on the well wall is reduced. The energy absorption element comprises a bearing plate, a transmission shaft, a connecting rod, a limiting plate, a rubber damper, a recovery device and a base. The rubber damper converts external impact force into heat energy or internal energy consumption through elastic deformation, and therefore transmission of the impact force is reduced. And the recovery device is used for recovering the initial state of each component after external force is removed. An energy absorption layer is arranged on the contact face of the energy absorption matrix and the bottom plate. Through optimized design and material selection, impact energy can be effectively absorbed and dissipated in an underground mine roadway, the stability of a well wall is improved, and damage of impact to a mine structure is reduced.

The utility model discloses a train anti-creeper which comprises an installation plate, a supporting pipe, a front energy absorption pipe, an abutting plate and an energy absorption seat, the supporting pipe is arranged in the installation plate, the energy absorption seat is arranged at one end of the supporting pipe, the front energy absorption pipe is arranged in the supporting pipe and the energy absorption seat, the abutting plate is arranged at one end of the front energy absorption pipe, and a plurality of anti-creeper teeth are arranged on one side of the abutting plate. The front energy absorption pipe corresponds to the supporting pipe. According to the anti-creeper for the train, the supporting pipe, the front energy absorption pipe and the energy absorption seat form a contraction type energy absorption structure, stable longitudinal deformation can be generated through the contraction type energy absorption structure, and the contracted structure can bear a certain bending moment; therefore, the crashworthiness of the train vehicle under the scenes of eccentric collision and inclined collision is effectively improved, and the energy absorption seat and the front energy absorption pipe are arranged to be a small end pipe and a large end pipe, so that in the collision process, the conical surfaces of the front energy absorption pipe and the energy absorption seat generate a friction effect.

Provided are: a welded joint and a high-strength cladding steel plate that is excellent in ammonia SCC resistance, low-temperature toughness, and bondability and is suitable for conveying liquid ammonia and supplying the same to a storage tank and the like; and a method for manufacturing said cladding steel plate and said welded joint.　The cladding steel plate includes: a base material having a prescribed chemical component; and a cladding material having a prescribed chemical component bonded to at least one surface (the surface serving as the inner surface). The tensile strength of the base material is 780 MPa or more, the absorption energy of the base material according to a Charpy impact test at -40°C is 47 J or more, the maximum hardness of the cladding material is 210 HV or less, and the bonding rate of the base material and the cladding material is 70% or more.

The invention relates to the technical field of oil gas well oil pipe transmission perforation, in particular to a perforation bidirectional shock absorber based on an energy absorption material and a shock absorption effect evaluation method.The bidirectional shock absorber comprises two energy absorption material elements which are connected to the two ends of a shock absorption spring in series respectively; the other end of one energy absorption material element abuts against the end of the upper connector through an upper limiting gasket, and the other end of the other energy absorption material element abuts against the end of a structure formed by connecting the plug and the sliding shaft through a lower limiting gasket. By means of the bidirectional shock absorber and the shock absorption effect evaluation method, the problems that the absorption effect of low-frequency impact shock waves generated during perforation is poor and the axial bidirectional shock absorption effect is poor can be effectively solved.

A crash cushion includes a pair of laterally spaced and longitudinally extending rails. A diaphragm frame is moveably supported by the rails. An outer guide is coupled to the diaphragm frame and is configured to engage an outboard portion of the rail on the impact side respectively during a lateral impact. The outer guide on the impact side is releasable from the outboard portion of the rail. A pair of laterally spaced inner guides are coupled to the diaphragm frame and successively engage and release the inboard portion of the impact side and non-impact side of the rails during an impact of sufficient severity. A flexible panel may be coupled to the impact side of the diaphragm frame. A deformable energy absorbing member is moveably connected to a stationary backup.

Disclosed are adjustable intraocular lenses and methods of adjusting intraocular lenses post-operatively. In one embodiment, an adjustable intraocular lens can comprise an optic portion and a peripheral portion. The peripheral portion can comprise a composite material comprising an energy absorbing constituent and a plurality of expandable components. A base power of the optic portion can be configured to change in response to an external energy directed at the composite material.

The invention discloses a landslide buffering and energy absorbing device based on a positive and negative Poisson's ratio alternating material, which comprises a protection plate I and a protection plate II which are oppositely arranged, and a positive and negative Poisson's ratio alternating layer is clamped between the protection plate I and the protection plate II; the positive and negative Poisson's ratio alternating layers comprise positive Poisson's ratio honeycomb layers and negative Poisson's ratio honeycomb layers which are alternately arranged in the transverse direction; the elastic modulus of the negative Poisson's ratio honeycomb layer material is not less than that of the positive Poisson's ratio honeycomb layer material; the positive Poisson's ratio honeycomb layer and the negative Poisson's ratio honeycomb layer are connected through a connecting rod layer, and the connecting rod layer is connected with the positive Poisson's ratio honeycomb layer and the negative Poisson's ratio honeycomb layer on the two sides in an attached mode. By reasonably arranging the positive and negative Poisson's ratio alternating layers, the problems of energy absorption and protection of the landslide blocking structure and insufficient rigidity of a single negative Poisson's ratio material are solved, and the blocking structure can be effectively reinforced by applying the positive and negative Poisson's ratio alternating layers to the head-on collision side of the landslide blocking structure.

The invention discloses a stopping system for an airplane, an energy absorption device and a mechanical property testing method. The stopping system for the airplane comprises an energy absorption system, the energy absorption system comprises an energy absorption assembly, the energy absorption assembly comprises a plurality of energy absorption devices connected end to end, each energy absorption device comprises a sliding block with a pawl, a ratchet groove, a dowel bar and an elastic buffering piece, the dowel bar is connected with the sliding block with the pawl, and the elastic buffering piece is connected with the ratchet groove; the sliding block with the pawl is arranged in the ratchet groove and matched with the ratchet groove to form a moving pair, and the elastic buffering piece is used for being connected with the dowel bar and the ratchet groove. One energy absorption system is used for being installed on one pulley assembly; one end of the arresting cable is connected to the dowel bar of one energy absorption system through the pulley assembly, and the other end of the arresting cable is used for being connected with the dowel bar of the head energy absorption device of the other energy absorption system after passing through the other pulley assembly.

The invention relates to the technical field of vehicle door hinge machining, in particular to punching equipment for vehicle door hinge machining, which comprises a workbench, a punching assembly, a feeding assembly, a clamping assembly and a collecting assembly, according to the punching equipment for vehicle door hinge machining, a top plate is stably erected on the workbench through a supporting column, and a lifter drives a lifting plate to vertically move; when the lifting plate descends, the connecting rod drives the rack to move downwards, the gear and the screw rod are driven to rotate, the feeding plate is promoted to advance along the sliding groove to push materials, and the problem that safety accidents are likely to occur in traditional manual feeding is solved; the centering block is matched with the side plates through first elastic pieces (combination of springs and telescopic rods, buffering, energy absorbing and guiding), first inclined faces on the two sides cooperate with the lifting plate pressing blocks, at the moment, racks and gears are not engaged any more, the guiding blocks drive materials to be fixed into the positioning grooves, and the stability of the material stamping process is guaranteed.

The invention provides a sandwich structure battery pack bottom guard plate energy absorption evaluation method and system based on strain energy analysis, and relates to the technical field of power battery pack protection, and the method comprises the steps: preparing a laminated sandwich structure bottom guard plate; calculating strain energy per unit volume of the composite material skin, the foam core material and the embedded steel plate; determining a deformation area volume based on a Hertz contact theory; the total absorption energy is obtained through superposition integration; and optimal structure parameters meeting energy absorption requirements and deformation constraint conditions are determined through gradient optimization. According to the invention, the energy absorption performance of the battery pack bottom guard plate can be effectively evaluated, lightweight design is realized, and the safety of the battery pack is improved.

The invention provides a bulletproof cross buffering and energy absorbing structure and a preparation method thereof, and relates to the technical field of bulletproof equipment buffering and energy absorbing, the buffering and energy absorbing structure is composed of an upper buffering layer and a lower buffering layer, and the upper buffering layer and the lower buffering layer are made of one layer or multiple layers of same bulletproof plane materials; convex structures which are arranged at intervals of a first preset distance and a second preset distance are formed on one or more layers of bulletproof plane materials through hot pressing to obtain an upper buffer layer and a lower buffer layer; wherein the height of the protruding structures is 50%-80% of the thickness of the bulletproof laminated plate, and the first preset distance and the second preset distance do not exceed the thickness of the bulletproof laminated plate; gaps are formed on the convex structures of each lower buffer layer according to a third preset distance, and the convex structures of the upper buffer layer are embedded into the convex structures of the lower buffer layer at a preset angle through the gaps. The surface density of the whole protective equipment can be effectively reduced, and the bulletproof and anti-impact composite material has a good application prospect in bulletproof and anti-impact equipment such as single-soldier equipment and armored vehicles.

Method for storing and / or transporting temperature-sensitive materials. In one embodiment, the method involves predicting whether a given passive thermal shipping system will maintain a payload within a desired temperature range over its entire transport / delivery route. To this end, thermal capacitance data is compiled for the shipping system at a plurality of temperatures spanning a broad range of potential ambient temperatures to which the shipping system may be exposed. In addition, forecasted ambient temperature data is obtained for a plurality of time intervals spanning the transport / delivery route. An effective ambient temperature, based on the forecasted ambient temperature, as well as rolling and cumulative averages, is then determined at each of the various time intervals. Using the effective ambient temperature, the thermal capacitance is determined from the compiled data and is compared to the cumulative absorbed energy. The shipping system fails when the cumulative absorbed energy exceeds the thermal capacitance.

The invention relates to a universal circuit breaker energy absorption device, and the device comprises a housing which is of a hollow structure; the moving contact mechanism comprises a supporting seat, and the lower end of the supporting seat is rotatably arranged at the bottom of the inner side of the shell; the energy absorption structure is made of a high-temperature-resistant viscoelastic material and is arranged at the front end of the inner side of the shell; when the universal circuit breaker is switched off, the supporting seat rotates around the rotating axis at the lower end to a switching-off position, the front end of the supporting seat is in collision contact with the energy absorption structure, the energy absorption structure is made of a high-temperature-resistant viscoelastic material, friction and lag deformation are generated after the energy absorption structure is stressed, kinetic energy is converted into heat energy, and the energy absorption structure is in contact with the energy absorption structure. The collision kinetic energy between the supporting seat and the inner side of the shell is reduced, so that the resilience force converted from the collision kinetic energy is reduced, the resilience distance is obviously reduced after the supporting seat collides with the shell, and the possibility of electric arc reignition is greatly reduced.

Control systems for smart thermoplastic composites comprising: a thermoplastic component (12); a thermal component (14) interfacing with said thermoplastic component (12); the cross- sectional arrangement is such that, the thermal component (14) modifies the thermal nature of the thermoplastic component in either its hot-active state or in its cold-active state ensuring that there is a pliable region of deformation within said thermoplastic component (12) by creating a controlled thermal gradient; an energy source (16) to enable transmission of energy between said thermal component (14) and said thermoplastic component (12); an energy sink (18) to enable absorption of energy between said thermal component (14) and said thermoplastic component (12); a control mechanism to achieve a pliable region of deformation¸ within said thermoplastic component (12), modulation mechanisms to modulate energy vectors, in order to achieve controlled localised thermal differential.

The utility model belongs to the technical field of seats, and particularly relates to a seat energy absorber using a turnup pipe, which comprises an inner sleeve and an outer sleeve sleeved outside the inner sleeve, an inner sleeve connecting lug and an outer sleeve connecting lug are respectively arranged at the outer ends of the inner sleeve and the outer sleeve, the inner sleeve and the outer sleeve are both made of carbon fiber materials, and the turnup pipe is arranged in the outer sleeve. A layer of stainless steel sleeve is arranged on the outer surface of the inner sleeve, one end or two ends of the stainless steel sleeve is / are provided with a turnup pipe which is formed by firstly flanging outwards and then flanging, and the outer surface of the turnup pipe is connected with the inner surface of the outer sleeve in a bonding mode. The energy absorber has no influence on passengers and the environment, is low in manufacturing, mounting and maintaining cost, light in weight and high in strength, and is suitable for aero seats.

The invention discloses high-performance brittle-crack-resistant steel for nuclear power pressure-bearing equipment and a manufacturing method of the high-performance brittle-crack-resistant steel. The high-performance brittle-crack-resistant steel comprises the following chemical components: 0.16%-0.24% of C, 0.20%-0.40% of Si, 1.25%-1.60% of Mn, less than or equal to 0.010% of P, less than or equal to 0.005% of S, 0.25%-0.45% of Cr, 0.25%-0.40% of Cu, 0.30%-0.50% of Ni, 0.005%-0.008% of Ca, 0.65%-1.25% of Mo and 0.04%-0.08% of V. The manufacturing method comprises the steps of smelting, continuous casting, heating rolling and heat treatment. The thickness of the steel plate is 30-120 mm, and through hardening and tempering and simulated postweld heat treatment, the normal-temperature tensile yield strength is larger than or equal to 620 MPa, the tensile strength is larger than or equal to 770 MPa, the 360-DEG C high-temperature tensile yield strength is larger than or equal to 518 MPa, the tensile strength is larger than or equal to 618 MPa, the impact absorption energy at the temperature of-40 DEG C is 195 J or above, the non-ductility transition temperature is smaller than or equal to-52 DEG C, and the grain size is larger than or equal to 8.5 grades. The steel provided by the invention has good mechanical properties and brittle crack resistance, and fully meets the requirements of steel for pressure-bearing equipment of a nuclear power unit.

The invention relates to a lunar soil microwave heating effect evaluation method. The method comprises the following steps: establishing a microwave cavity model enclosed by a metal boundary; calculating electric field distribution of the lunar soil according to the magnetic conductivity and the complex dielectric constant of the lunar soil; a plurality of sampling bodies are arranged in the target area, and microwave energy absorbed by each sampling body is calculated according to electric field distribution of lunar soil; determining the specific heat capacity of the lunar soil along with the temperature change, and calculating the temperature change rate in each sampling body according to the microwave energy; calculating the standard deviation and the average value of the temperature change rates of all the sampling bodies, and obtaining a variable coefficient along with the temperature change; and when the temperature of the lunar soil is balanced, judging the microwave heating uniformity of the lunar soil according to the variable coefficient. In the process of analyzing the lunar soil microwave heating effect, starting from the first principle, the characteristic that the specific heat capacity of the lunar soil changes along with the temperature is considered, the physical reality that the lunar soil absorption energy changes along with the temperature in the process of converting the lunar soil absorption energy into the temperature is fitted, and the accuracy of lunar soil microwave heating effect analysis is improved.

Miniature lighting device characterized in that it consists of one or more elements made entirely or partially of phosphorescent material, wherein these elements absorb energy during exposure to natural or artificial light and release it again in the dark in the form of visible afterglow.

A lattice structure buffer energy absorption performance equivalent evaluation method for a pyrotechnic device, which is a lattice structure buffer energy absorption performance evaluation method using small sample multi-rate equivalent load application, comprehensively considers the influence of loading rate on the mechanical behavior of the lattice structure, calculates the lattice structure calculation model parameters under different conditions by presetting the loading rate, and then according to the lattice structure calculation model parameters, the current impact speed is calculated, based on the densification load and the maximum energy absorption characteristic parameters, and the calculation results are used to evaluate the buffer energy absorption performance of the lattice structure under the specified mass and speed impact.