965 results about "Shape-memory alloy" patented technology

The invention discloses a modularized replaceable self-resetting energy consumption type bridge pier anti-collision system, and belongs to the technical field of bridge engineering structure safety. The system includes an annular rubber pad, an annularly disposed damper module, and a shape memory alloy (SMA) tow. The damper module comprises a cylinder body, high-viscosity fluid, a reset spring, a piston and a force transmission plate. The cylinder body is fixed to the pier in a surrounding mode through bolts and rubber pads, the inner wall of the cylinder body is connected with the piston through a reset spring, the piston rod end is hinged to the force transmission plates, and the SMA wire bundles are connected with the force transmission plates. When an external impact load acts on the force transmission plate, the fluid damper provides viscous energy consumption, and the SMA wire bundle, the spring and the rubber pad provide deformation energy consumption; after the collision is finished, the system can be reset to the initial position under the synergistic effect of the SMA wire bundle, the spring and the rubber pad. By means of the modular design, efficient energy consumption and self-resetting can be achieved; and meanwhile, a single damper can be quickly replaced after being damaged, so that the maintenance efficiency and the system recoverability are greatly improved.

The invention discloses a kilometer deep well roadway toughness regulation and control supporting system and a dynamic design method, and belongs to the field of deep well roadway supporting. The supporting system comprises a multi-layer collaborative structure and an intelligent regulation and control module, the multi-layer collaborative structure sequentially comprises a shape memory alloy energy absorption layer used for resisting impact loads and a gradient pore foam metal buffer layer used for energy grading dissipation from inside to outside, and the multi-layer collaborative structure is connected with roadway surrounding rock in an anchoring mode through an anchor rod anchoring structure; the intelligent regulation and control module comprises a distributed optical fiber sensor array used for monitoring surrounding environment signals of surrounding rock in real time, an electrostriction driver used for regulating and controlling the rigidity of the multi-layer cooperative structure and a multi-channel data fusion terminal used for achieving underground and surface data transmission synchronization. By the adoption of the kilometer deep well roadway toughness regulation and control supporting system and the dynamic design method, the problems that a traditional supporting mode is too high in material rigidity, lacks dynamic regulation and control capacity and is insufficient in impact toughness can be solved.

The invention relates to the technical field of seabed base adjusting platforms, and discloses a seabed base self-adaptive leveling device and method based on shape memory alloy, and the device comprises a seabed base observation platform which is used for bearing instruments and equipment; the leveling supporting legs are uniformly distributed below the seabed-based observation platform and are used for realizing shock isolation and shock absorption and full-automatic and high-reliability leveling after the seabed-based observation platform touches the bottom by utilizing the shape memory effect and the superelasticity of SMA (Shape Memory Alloy); and the universal joint connecting mechanism is used for connecting the leveling support leg with the foot pad so as to adapt to and support slopes with different angles. The shape memory effect and the hyperelasticity of SMA are utilized, under the condition that an external power source and a complex control system are not needed, full-automatic and high-reliability leveling after the platform touches the bottom is achieved, and the technical problems that according to an existing leveling scheme, limitation of different degrees exists in the aspects of structure complexity, environment adaptability, long-term reliability and leveling precision are solved.

The invention discloses a glass bottle outer side paint spraying production device, and relates to the technical field of glass bottle machining, the glass bottle outer side paint spraying production device comprises a paint spraying machine box, a conveying assembly and a glass bottle fixing assembly.According to the glass bottle outer side paint spraying production device, through a flexible clamping structure formed by cooperation of a phase-change material and an air bag, self-adaption and lossless sealing of different bottle openings are achieved, and paint spraying vibration is effectively prevented; a supporting mechanism driven by a shape memory alloy in the bottle is combined, a temperature control rod is heated to trigger alloy phase change, a supporting strip is pushed to be evenly opened along a T-shaped sliding groove, stable inner supporting force is provided, rotating eccentricity is restrained, meanwhile, the temperature control rod transmits heat into the bottle through a heat conduction rod, the temperature of the bottle body is increased, paint leveling is promoted, the orange peel and sagging defects are reduced, and the paint spraying effect is improved. And a closed environment formed by sealed clamping further retains heat, paint film pre-drying is assisted, paint spraying uniformity, adhesive force and production efficiency are remarkably improved, and the device is suitable for automatic coating of high-precision glass bottles.

The invention discloses a modular self-adaptive robot device based on SMA driving paper folding bionics. The modular self-adaptive robot device is composed of peak folding rods, valley folding rods, SMA wires, a magnetic attraction connecting structure and a 3D printing bottom plate, and self-adaptive operation is achieved through driving-sensing-structure integrated cooperation. The SMA wires have driving and sensing functions, structural deformation is driven through PWM, resistance change of the structural deformation is measured in real time, and axial telescoping, radial telescoping and bending of the module can be controlled in a closed-loop mode without an external sensor. The device is combined based on the lever amplification principle, tiny deformation of the SMA wire is efficiently converted into large-stroke output of a mechanism, and the problem that the stroke of an SMA driver is limited is solved. A single module has three modes of radial expansion, linear actuation and torsion joint, and complex movement can be completed through combination. A plurality of modules are connected in series with a quick connecting piece through magnetic attraction, and the functions of bionic wriggling, rod cable climbing or multi-section operation arm can be achieved through time sequence programming. And a flexible and reconfigurable robot solution is provided for detection and rescue tasks in a complex environment.

The embodiment of the invention discloses a damper, a vibration isolation device and semiconductor equipment, relates to the technical field of vibration isolation, and solves the problem that a measurement frame in existing high-precision semiconductor equipment cannot realize good vibration isolation and good instantaneous stability at the same time. The damper comprises a first fixing support, a second fixing support, a supporting structure, at least one damping structure and at least one pre-tightening adjusting structure. The supporting structure is connected with the first fixing support or the second fixing support. Any damping structure comprises at least one shape memory alloy damping wire. All the shape memory alloy damping wires in any damping structure are connected with the first fixing support. In any damping structure, at least one shape memory alloy damping wire diffracts on the supporting structure in the opposite direction and is connected with the second fixing support. And the at least one pre-tightening adjusting structure is connected with the shape memory alloy damping wire in the at least one damping structure. And the pre-adjusting structure adjusts the pre-tightening force of the corresponding shape memory alloy damping wire.

The invention relates to a new energy battery cooler, and belongs to the technical field of new energy vehicle battery cooling. The new energy battery cooler comprises a battery base, a controller, a protective shell and a battery pack, the controller and the protective shell are fixedly mounted at the top of the battery base, and the battery pack is arranged in the protective shell; the cooling flow guide mechanism comprises a contact shell, a cooling assembly and a heat conduction assembly, and the contact shell is fixedly mounted on the outer side of the battery pack; a cooling flow guide mechanism is arranged on the outer side of a battery pack, a passive self-adaptive flow guide function which a traditional liquid cooling structure does not have is achieved, a shape memory alloy memory valve plate and a phase change micro-grid composite layer are introduced into a cooling flow channel, when the temperature of the battery pack locally rises, a phase change layer absorbs heat and diffuses, meanwhile, the memory valve plate deforms to expand the section of the flow channel, and the flow channel is cooled. And the cooling liquid automatically increases flow and enhances heat exchange for a hot spot area, the local cooling capacity can be dynamically adjusted, and the temperature equalization performance is remarkably improved.

The invention discloses a socket with safety protection. The socket comprises a multi-mode thermal sensing array, and a fusion array of a miniature infrared thermal imaging sensor array and a distributed fiber grating temperature sensor which are integrated at key points in the socket; according to the active locking mechanism based on the thermal deformation prediction model, a micro servo motor, a ball screw, a pre-tightening spring and a spring bolt form an electronic lock, a shape memory alloy wire is used for rapid and silent emergency unlocking, and the micro servo motor is used for high-precision conventional locking; the dynamic thermal safety boundary algorithm module is used for dynamically calculating the optimal temperature upper limit and the optimal power upper limit of each component in the current state according to factors such as a real-time temperature field, predicted thermal deformation, current charging power and historical charging data; the main controller is used for transmitting a large amount of real-time temperature field data. Through multi-mode sensing, predictive modeling and master-redundancy cooperative execution, thermal safety and mechanical reliability of the charging interface under extreme working conditions are guaranteed.

The invention discloses a BIM intelligent assembly system applied to node construction, and belongs to the technical field of node construction. The BIM intelligent assembly system comprises the following modules: a node-level BIM parameterized model library; a factory-end intelligent manufacturing module; the field end intelligent assembly module comprises a reusable node sensing layer composed of UWB, IMU and a visual fusion sensing suite; an edge decision-making layer in which a lightweight Transform model is embedded; the shape memory alloy lock pin and the self-locking and self-adjusting execution layer of the piezoelectric micro-displacement sliding table are integrated on the node connecting plate; and a block chain quality file sub-module. The parameterized node group is directly issued to the steel bar hoop bending robot, the sleeve welding robot and the 3D printing mold, the space coordinates of steel bars, sleeves and embedded parts can be locked within the millimeter-level range in the factory stage, and the six-degree-of-freedom postures of the nodes are captured in real time during on-site hoisting; once deviation is found, the edge AI gives out a posture adjusting instruction immediately, and correction is completed through an SMA lock pin and a piezoelectric micro-displacement sliding table.

The invention discloses a variable-rigidity flexible space debris capturing device based on a woven structure. The variable-rigidity flexible space debris capturing device comprises a capturing assembly, a connecting assembly, a driving device, a power supply module and a control assembly. The capturing assembly comprises a plurality of flexible woven belts; the connecting assembly comprises an upper fixator and a lower fixator, and the two ends of the flexible woven belt are fixedly connected with the upper fixator and the lower fixator respectively; a shape memory alloy wire is fixedly arranged on the flexible woven belt, and the power supply module is at least used for electrifying the shape memory alloy wire; the driving device is used for driving the upper fixer to rotate so as to drive the plurality of flexible woven belts to be folded or unfolded; when the plurality of flexible woven belts are folded and / or unfolded, the plurality of flexible woven belts realize mutual support through position difference; according to the variable-rigidity flexible space debris capturing device based on the woven structure, the woven structure formed by interweaving the flexible strips is utilized, the flexibility and adaptability of the woven structure are brought into play, and self-adaptive conformal capturing of space debris of different shapes is achieved.

The invention relates to the technical field of floating type platform mooring systems, and discloses a self-adaptive mooring cable, a manufacturing method and a self-adaptive mooring method.The self-adaptive mooring cable sequentially comprises a center main bearing layer, a middle protection layer and an outer self-adaptive regulation and control layer from inside to outside. The central main supporting layer is composed of synthetic fiber cables with high tensile strength; the middle protective layer wraps the periphery of the main bearing layer, is formed by weaving fiber materials and is used for preventing external media from invading; the outer-layer self-adaptive regulation and control layer covers the periphery of the protective layer and is woven into a net-shaped structure by shape memory alloy wires; the shape memory alloy woven mesh is configured to be capable of dynamically adjusting the overall rigidity of the mooring cable through thermoelastic martensite phase transformation based on environment temperature changes, and creep deformation of the synthetic fiber cable is slowed down. Through the synergistic effect of the three-layer structure, the structural stability and performance consistency of the mooring cable in long-term use are guaranteed.

This application provides a rotating mechanism and a foldable electronic device. The rotating mechanism includes a fastening base, a first synchronization swing arm, a second synchronization swing arm, and a damping member. The first synchronization swing arm and the second synchronization swing arm are respectively mounted on two opposite sides of the fastening base in a width direction and are rotatably connected to the fastening base. The damping member includes a baffle plate and a damping body, the damping body is connected between the first synchronization swing arm and the baffle plate, two opposite ends of the damping body are disposed along a length direction of the fastening base, and the damping body is made of a shape memory alloy.

The invention relates to the technical field of valve testing, in particular to a valve performance detection system and method, and the system comprises a self-adaptive clamping module, a multi-parameter sensing module, an environment simulation module, a valve driving module, a safety protection module and a control and data processing module. The self-adaptive clamping module achieves valve positioning and sealing through shape memory alloy sealing and three-jaw positioning. The multi-parameter sensing module is used for acquiring fluid, mechanics, temperature and leakage signals; the environment simulation module is used for providing a temperature and pressure testing environment; the valve driving module adopts the combination of a servo motor and a precise speed reducer to realize high-precision driving; the safety protection module guarantees the test safety through an overpressure protection valve, an overtemperature alarm and an emergency stop button; the control and data processing module synchronously processes data and diagnoses faults based on an expert knowledge base. The problems that a special valve is poor in clamping, parameter collection is incomplete, and extreme working conditions are difficult to simulate are solved.

The invention discloses a supercharger guide vane design method with an adjustable vortex cross section, and relates to the technical field of turbochargers, the method comprises the following steps: constructing a multi-objective optimization model, and adopting a non-dominated sorting genetic algorithm to search a Pareto optimal solution; defining a parameterized section model composed of a leading edge ellipse-smooth transition structure, a segmented cubic Bezier mean camber line and a variable trailing edge; a multi-degree-of-freedom linkage mechanism comprising a miniature shape memory alloy driver array is designed, and the overall deflection and local deformation of the blade are cooperatively adjusted; establishing a real-time feedback control logic based on an engine working condition signal, and dynamically outputting a target flow area and a section form parameter; the vortex intensity and the vortex core position are actively controlled by synchronously adjusting the throat position, the width and the airflow emergence angle; and carrying out verification and iterative optimization in combination with high-fidelity transient CFD simulation. According to the method, the isentropic efficiency of the turbine under all working conditions is remarkably improved through multi-dimensional cooperative regulation and control, and the flow stability and the system reliability are enhanced.

The invention discloses a shape memory alloy multi-physics field analysis method based on an expansion depth operator network, belongs to the technical field of material science and engineering calculation, solves the problem of phase field dynamics analysis of multi-physics field coupling under various initial conditions, and comprises the following steps: S1, constructing the expansion depth operator network, the expansion depth operator network comprises a branch network and a backbone network; and S2, determining the total error of the neural network according to the data information error and the physical information error, optimizing the parameters of the neural network by adopting an AdamW optimizer and a Minibatch technology, training the neural network, and completing the shape memory alloy multi-physical field analysis based on the extended depth operator network. According to the method, the expansion depth operator network is used for replacing a finite element method, the solving process of the multi-physical field phase field equation is accelerated, field quantity distribution continuous in time and space is obtained, the solving process is accelerated, and continuous field distribution is obtained.

The invention provides a high-strength and high-ductility damage self-repairing cement-based composite material based on spiral memory alloy fibers and a preparation method of the high-strength and high-ductility damage self-repairing cement-based composite material, and belongs to the technical field of underwater engineering concrete structures. According to the invention, the matrix mix proportion of the cement-based composite material and the hybrid reinforcement effect of the three fibers on the matrix are redesigned, so that the tensile strain capacity is also remarkably improved while the strength of the UHPSC is improved, and the deformation ductility and the cumulative energy dissipation capacity of the cement-based composite material are further remarkably enhanced; as the spiral superelastic SMA fibers have self-resetting capacity, restoring force can be provided for the unloaded cement-based composite material, tensile cracks of the cement-based composite material are promoted to be automatically closed or the width of residual cracks of the cement-based composite material is obviously reduced, and on the basis, the self-healing capacity of an incompletely hydrated cementing material in the cement-based composite material is matched, so that the self-healing performance of the cement-based composite material is improved. And the UHPSC material can present a good damage self-repairing effect.

The invention discloses a dual-purpose mounting structure of a pole-mounted circuit breaker, relates to the technical field of power equipment, and aims to solve the technical problems that the matching precision of the mounting structure and a circuit breaker body is influenced by temperature fluctuation, and the service life is influenced. Through collaborative design of the two-way shape memory alloy deformation sleeve, the self-adaptive bolt, the spiral section and the waterproof heating structure, efficient dual-purpose adaptation to the cold winter environment and the high-temperature summer environment is achieved, at the high temperature summer, the deformation sleeve is heated to expand to push the positioning ring to be matched with the self-adaptive bolt expansion sleeve to stretch elastically, rigid extrusion of metal parts is avoided, and the service life of the metal parts is prolonged. Meanwhile, the spiral section is driven to secondarily press the rubber layer, the wind resistance and skid resistance are improved, and stable fixation under high-temperature strong wind is guaranteed; in extremely cold winter, the deformation sleeve is subjected to phase change shrinkage to pull the positioning ring, the self-adaptive bolt fills the cold shrinkage gap, the spiral drainage track dredges dew, the metal net is heated to prevent icing, and the pressing force of the spiral joint is matched to avoid the risk of gap expansion and slipping.

The invention belongs to the field of machining, and particularly relates to an integrated high-precision nut burying operation machine which comprises a frame body, a displacement mechanism, a nut burying mechanism, a man-machine interaction layer and a data acquisition and processing module. The core of the system is that a multi-source cooperative closed-loop regulation and control system is constructed, a visual detection module integrates a multispectral compound eye bionic system and an improved ICP algorithm, pressure and temperature field adjustment is combined with shape memory alloy, phase change energy storage and fuzzy control, and a process parameter self-optimization and abnormity self-repairing subsystem is matched. The equipment can automatically adapt to workpieces made of various materials, initial optimization parameters are output when the equipment works for the first time, the embedding precision and the pressing-in force stability are effectively guaranteed, the problems of screw loose, deformation and the like are avoided, clamping stagnation, overheating and other abnormalities can be rapidly handled, production interruption is reduced, and high precision, high efficiency and production continuity are considered.

A payload release system for a vehicle includes a housing including a base plate and a cover plate selectively coupled to the base plate, wherein a receiving space is defined between the base plate and the cover plate; a crank rotatably coupled to the base plate within the receiving space; a trigger in operable communication with the crank, the trigger being configured to translate in response to a rotation of the crank; and an actuator operably coupled with the crank. The actuator includes a shape metal alloy (SMA) wire.

The invention discloses a rail transit bearing with self-adaptive lubrication and efficient heat dissipation. The rail transit bearing comprises a shape memory alloy valve, a bearing body and a cooling sleeve, wherein a cooling flow channel is formed in the cooling sleeve; the cooling sleeve is arranged on the periphery of an outer ring of the bearing, an oil supplementing ring is arranged between the outer ring and an inner ring of the bearing, the shape memory alloy valve is fixed to the oil supplementing ring, an oil storage cavity and an oil outlet communicated with the oil storage cavity are defined by the shape memory alloy valve and the oil supplementing ring, and the oil outlet is opposite to a roller of the bearing. When the internal temperature of the bearing is not higher than a first threshold value, the shape memory alloy valve is in a closed state, and the oil outlet hole is closed; and when the internal temperature of the bearing is not lower than a second threshold value, the shape memory alloy valve is in an open state, and the oil outlet is opened at the moment. Lubricating grease is stored through the oil storage cavity, and oil supply is controlled through opening and closing of the shape memory alloy valve. Heat exchange is carried out through the cooling sleeve and the bearing, heat accumulation is avoided, it is guaranteed that the bearing can operate within a proper temperature range, and normal operation of the bearing is guaranteed from the two aspects of lubrication and heat dissipation.

The invention discloses a flexible manipulator with variable clamping force and constant-force rubbing and a using method thereof, and belongs to the technical field of micromanipulators, the flexible manipulator comprises a first driving mechanism, a second driving mechanism, a variable-rigidity clamping mechanism and a constant-force rubbing mechanism, the variable-rigidity clamping mechanism is formed by connecting a guide beam assembly, a variable-rigidity beam assembly and a decoupling beam assembly in series, and the constant-force rubbing mechanism is connected with the first driving mechanism. A first clamping end is arranged at the tail end, the rigidity of the constant force rubbing mechanism can be adjusted through embedded shape memory alloy, the constant force rubbing mechanism is composed of a positive rigidity structure and a negative rigidity structure, a second clamping end opposite to the first clamping end is arranged at the tail end, and the two mechanisms are connected through the decoupling beam assembly to achieve structural decoupling. The problems that an existing flexible manipulator is non-adjustable in clamping rigidity, slow in constant force response and mutual in function interference are solved, and self-adaptive grabbing and stable rubbing of micro-scale objects are achieved.

A protection device for pressure transmitters, belonging to the field of pressure transmitter technology, addresses the problem that pressure sensors are prone to high-temperature anomalies and excessive overall temperature rise after prolonged use. The constant conductivity between the pressure sensor and the measured medium can easily lead to component aging, seal failure, and measurement malfunction, and in severe cases, damage to the pressure sensor. The invention includes a transmitter body with a pressure sensor fixedly installed inside. This invention uses a push plate, a pusher component, and a threaded ring to convert the displacement of the shape memory alloy due to heat deformation into a stable linear thrust. When the pressure sensor experiences an abnormal high-temperature condition, it can quickly drive the sealing component to rotate and close precisely, promptly cutting off the flow channel of the pressure medium inside the transmitter. This prevents the measured medium from continuously contacting, impacting, and corroding the pressure sensor under high-temperature conditions, effectively reducing the risk of pressure sensor damage under high-temperature conditions and achieving instantaneous emergency protection against faults.

This utility model belongs to the field of pre-embedded bolt anti-loosening technology, and discloses a pre-embedded bolt anti-loosening structure for metal products. It includes a nut rotatably mounted on the lower outer side of the bolt body, grooves on both sides of the nut, a cotter pin fitted inside the grooves and inserted into the bolt body, a locking washer fixed to the upper surface of the nut, and a shape memory alloy spring washer fixed to the lower surface of the nut. Through the cotter pin, shape memory alloy spring washer, and locking washer, the cotter pin prevents relative rotation of the bolt, nut, and other connecting parts under vibration or external force, ensuring a stable and safe connection. The shape memory alloy spring washer can increase the pressure at the connection point, reduce contact resistance, and suppress heat generation by deforming under temperature changes and other environmental conditions. It can also absorb some energy to reduce vibration amplitude and ensure connection stability. The locking washer restricts the rotation of the nut and bolt.

An actuator assembly comprising a first part; a second part that is movable relative to the first part from a reference position, wherein a biasing force urges the second part to the reference position relative to the first part; and one or more shape memory alloy, SMA, elements configured, on actuation, to cause one or more actuation forces to be applied to the second part for moving the second part relative to the first part within a range of movement, wherein each SMA element is configured such that, when the SMA element on actuation effects movement of the second part away from the reference position, the ratio of the change in position of the second part to the change in actuation amount of the SMA element decreases with increasing displacement of the second part from the reference position.

This invention discloses an intelligent variable stiffness stabilizer bar system for vehicles. The system includes a stabilizer bar body made of shape memory alloy, a heating assembly, an electronic control unit, a vehicle attitude sensor, a temperature sensor, a power supply, and a relay. The stabilizer bar body is formed of a shape memory alloy with reversible phase transition properties, exhibiting different elastic moduli depending on the phase transition state. The heating assembly heats the stabilizer bar body to trigger the phase transition. The electronic control unit controls the heating assembly's start and stop based on the roll angle signal from the vehicle attitude sensor and implements temperature protection control based on the temperature sensor signal. The system can adjust the stabilizer bar stiffness according to changes in the vehicle's roll angle, thereby controlling the vehicle's roll response and improving the vehicle's anti-roll capability and driving comfort. This invention also discloses a vehicle.

The invention discloses an orthogonal electric drive SMA wire imitated face-centered cubic lattice variable stiffness topological structure, and belongs to the technical field of variable stiffness structures. The whole structure is a cubic frame, is arranged in a face-centered cubic lattice mode, is of a tensegrity structure and achieves self-balance by means of prestress. The structure comprises 1 / 4 spherical nodes located at eight angular points, 1 / 2 spherical nodes located at six face centers, connecting rods and shape memory alloy wires which are orthogonally arranged along twelve edges. The length and the rigidity of each wire can be adjusted by controlling the electrifying current of each wire, so that the directional and continuous adjustment of the rigidity of the whole structure is realized. The magnets are embedded in the spherical nodes, adjacent units can be freely expanded in the X direction, the Y direction and the Z direction through face-to-face combination, and good modularization and reconfigurability are achieved. The invention has the advantages of light structure, simple and convenient control decoupling, expandable space, adjustable rigidity and the like, and can be applied to the fields of ship-borne equipment, industrial robots, optical instruments, rehabilitation assistive devices and the like.

The invention belongs to the technical field of material science, and discloses a shape memory alloy component prediction method and a related device, and the method comprises the steps: processing a target stress-strain curve of a shape memory alloy through a pre-trained WCGAN-GP network, and obtaining a plurality of groups of phase field parameters; processing the multiple groups of phase field parameters through a trained LSTM model to obtain a predicted stress-strain curve corresponding to each group of phase field parameters; calculating the similarity between the target stress-strain curve and each predicted stress-strain curve, screening the predicted stress-strain curve of which the similarity with the target stress-strain curve meets the requirement, and taking the predicted stress-strain curve of which the similarity meets the requirement as the optimal predicted stress-strain curve. And taking a phase field parameter corresponding to the optimal prediction stress-strain curve as a final component of the shape memory alloy. According to the method, the components of the shape memory alloy can be predicted according to the performance requirements of the shape memory alloy, and the reverse design capability urgently needed for designing a new material is achieved.

The invention discloses a shape memory alloy phononic crystal interlayer unit and an array interlayer structure, and the shape memory alloy phononic crystal interlayer unit comprises a crystal cavity formed by an upper substrate, a lower substrate and rib plates, and a shape memory alloy phononic crystal installed in the crystal cavity; the shape memory alloy photonic crystal comprises a coating body, a scatterer and a plurality of Ni-Ti shape memory alloy particles, the Ni-Ti shape memory alloy particles comprise three different transformation forms of an austenite shape Ni-Ti shape memory alloy, an I-type martensite shape Ni-Ti shape memory alloy and an II-type martensite shape Ni-Ti shape memory alloy. According to the design of the shape memory alloy photonic crystal interlayer, a shape regulation band gap and a sound insulation curve can be changed through temperature control, and the temperature self-adaptive regulation performance can be promoted; and the sound insulation frequency band range of the sandwich structure can be widened, and the problems of light broadband self-adaptive sound insulation and the like are effectively solved.

This invention discloses a biomimetic starfish robot, relating to the field of simulation robots. The biomimetic starfish robot includes a biomimetic exoskeleton, which is obtained by folding a flat plate structure with creases; a shape memory alloy, which is disposed on the biomimetic exoskeleton and drives the biomimetic exoskeleton to deform through its own deformation; and a driving unit for driving the shape memory alloy to deform. The biomimetic starfish robot proposed in this invention uses an electric heating system attached around the shape memory alloy, which can transfer heat to the surrounding environment in a short time. Because the shape memory alloy at the arm-foot junction has a small volume and a low temperature of the austenite phase, the circuit system only needs a relatively weak electrical signal to generate enough heat to deform the shape memory alloy. Therefore, this invention will greatly reduce power consumption, reduce noise pollution, and simplify the design of the circuit system.