56 results about "Impact dynamics" patented technology

The invention discloses a high-temperature and high-pressure multifunctional integrated shock tube test system, belongs to the technical field of explosion and impact dynamics tests, and aims at solving the problem that an existing shock tube is usually single in function and is only used for a simulation test of a certain function. The high-pressure section and the low-pressure section of the shock tube are both made of high-temperature-resistant nickel-based alloy, an induction heater is adopted for heating, high-pressure inert gas is filled into the high-pressure section through pressure gradients of diaphragm sets with different layers of diaphragm clamping sections, high temperature and high pressure of the high-pressure section at the temperature of 20-900 DEG C and the pressure of 0.1-50 MPa are obtained, and the high-pressure shock tube has the advantages that the high-pressure shock tube is compact in structure and low in cost. The multifunctional integrated shock tube test system can be used for researching the crushing characteristics of rock materials under the conditions of different pressures, temperatures, water contents and the like, the damage characteristics of explosion shock waves in the air to a target piece and the impact damage characteristics of a high-speed projectile body. Effective methods and means are provided for related research, and the shock tube test technology and engineering application capability are expanded. The test system is easy to implement, low in cost and multipurpose.

The invention relates to a dynamic characteristic modeling method and system for an alternating impact disassembling operation robot, and relates to the technical field of robot control, and the method comprises the steps: firstly, comprehensively considering the dynamic characteristics of a robot joint side and a motor side, building a torque-driven flexible joint dynamic model, and determining the influence of joint flexibility on impact response; secondly, estimating normal impact force and tangential friction force by adopting an exponential inelastic continuous contact model, constructing an alternating impact dynamic model, and quantifying momentum change and a nonlinear dynamic effect in the impact process; and finally, a multi-space dynamic characteristic coupling model is established, the interaction mechanism of the joint space, the impact contact space and the task space is systematically analyzed, the accurate speed after impact is output, an impact force control strategy is generated, the dynamic response precision of the robot under the alternating impact operation is improved, the active utilization of the robot on the impact effect is achieved, and the reliability of the robot is improved. And the stability, the accuracy and the high efficiency of the disassembling operation are ensured.

The invention discloses a test device and method for simulating an ultra-high-speed penetration ground impact effect, and the device employs a static load loading system to apply a static load to the periphery of a sample so as to simulate a ground stress environment, and employs a dynamic load loading system to apply an impact dynamic load to the top of the sample so as to simulate ground impact. In the dynamic loading system, a phase change reaction kettle is used for heating liquid CO2 to a supercritical high-pressure state; the liquid filling module is used for filling liquid CO2 into the phase change reaction kettle; the gun barrel is used for receiving high-pressure gas released by the phase change reaction kettle and forming ground shock waves similar to a plane; the stress wave lens module is used for adjusting the width of shock waves through a stress wave lens combination and acting the shock waves on the sample; the control module can control the shock wave peak pressure by regulating the heating power of the phase change reaction kettle, and can control the duration time of shock waves by regulating the bore diameter of the gun barrel. According to the invention, controllable and high-fidelity simulation of the ultra-high-speed penetration impact effect is realized.

The invention discloses a rub-impact dynamics simulation method for complex curved and swept blades of an engine, which relates to the technical field of engines and comprises the following steps of: 1, performing discretization operation on an actual blade by using an entity unit to obtain a dynamics matrix of the blade, constructing a blade reduction dynamic matrix in a variable rotating speed range in a mode of combining a fixed interface modal synthesis method and dynamic matrix fitting; 2, according to the relation between the blade-casing relative position and the three-dimensional motion, establishing an intrusion amount expression of the blade tip molded surface of the blade based on a multi-coordinate system; step 3, in combination with a displacement and load equivalence idea, deducing a rub-impact surface load by using a distribution gap, and establishing a kinetic equation of blade-casing rub-impact on the basis of the finite element model; and 4, solving the rub-impact response of the blade by using a Newmark method, and calculating the rub-impact stress of the blade through the physical equation and the geometric equation of the constitutive relationship.

The application discloses a test device and method for simulating the impact effect of super-high-speed penetration into the ground, wherein a static load loading system is used to apply static load to the periphery of a sample to simulate the ground stress environment, and a dynamic load loading system is used to apply impact dynamic load to the top of the sample to simulate the ground impact, wherein in the dynamic load loading system, a phase change reaction kettle is used to heat liquid CO2 to a supercritical high-pressure state, a liquid charging module is used to charge the phase change reaction kettle with liquid CO2, a barrel is used to receive the high-pressure gas released by the phase change reaction kettle and form an approximately planar ground shock wave, a stress wave lens module is used to adjust the width of the ground shock wave through a stress wave lens combination and act on the sample, and a control module can control the peak pressure of the ground shock wave by regulating the heating power of the phase change reaction kettle and can control the duration of the ground shock wave by adjusting the aperture of the barrel. The application realizes controllable and high-fidelity simulation of the impact effect of super-high-speed penetration into the ground.

The invention provides a coal mine underground reservoir dam body anti-impact stability simulation test device and method.The device comprises a main body frame, a dam body model, dam body loading systems, an impact disturbance system, an impact energy monitoring system and a response measurement monitoring system, and the dam body loading systems are arranged on the upper portion and the two sides of the main body frame; the static load module is used for providing vertical static load force and transverse static load force for the dam body model; the impact disturbance system is arranged at the upper part of the main body frame and is used for applying a dynamic load force to a target position of the dam body model; the impact energy monitoring system is used for monitoring the impact speed and impact energy of the impact disturbance system; and the response measurement monitoring system is used for monitoring the response state of the dam body model when the dam body loading system and the impact disturbance system act. According to the method, the mechanical response characteristics and the deformation failure rule of the underground reservoir dam body under the impact load effect can be obtained, and the impact dynamic disaster breeding and causing mechanism of the underground reservoir dam body of the coal mine is disclosed.

The application relates to the field of impact dynamics tests, and particularly discloses an electronic instrument high-g-value impact characteristic test evaluation device and method. The device comprises an adapting section, a pulse shaper, and a base. The adapting section is coaxially connected with the tail of a high-speed gas gun launch tube to form a radially constrained loading channel and is movably connected with an impact mass. The pulse shaper is arranged in the adapting section. The base is slidably connected in the adapting section and located behind the pulse shaper, and is used for bearing the load transmitted by the impact mass when the impact mass hits the pulse shaper. The base has a front cavity and a rear cavity, and the rear cavity contains a measuring body. A diaphragm pressure gauge is arranged on the front end impact surface of the base, a base accelerometer is arranged in the front cavity, and a multi-parameter sensor is arranged in the measuring body. The device can accurately obtain an excitation load, realize distributed synchronous measurement of multiple physical quantities, has reliable signal line protection and kinetic energy absorption mechanism, and improves the accuracy and reliability of performance evaluation of electronic instruments and protective components of the electronic instruments under a high-g-value impact environment.

The utility model provides gun bore radial impact load experiment equipment, which relates to the technical field of impact dynamic model devices, and comprises a support frame, a pneumatic loading assembly, an acceleration conduit, an impact rod, an energy collection assembly and an impact pressure reverser, the pneumatic loading assembly is connected with the top of the support frame; the acceleration conduit is connected below the pneumatic loading assembly and is located in the support frame; the impact rod is connected into the acceleration guide pipe in a sliding manner; the energy collecting assembly is connected with the bottom of the supporting frame, the energy collecting assembly and the pneumatic loading assembly are oppositely arranged, and the upper portion of the energy collecting assembly makes contact with a test piece; the impact pressure reverser is connected with a blast hole formed in the test piece and is opposite to the bottom end of the impact rod. The utility model solves the problems in the prior art that the loading of radial impact load is difficult to realize and the equipment is easy to damage or the experimental data is inaccurate.

The invention discloses a high-overload gyroscope impact resistance design method based on a multi-section trial function energy method, and belongs to the technical field of micro electro mechanical system structure design. Comprising the following steps: constructing a physical model; establishing a trial function; calculating out-of-plane bending flexibility of the novel structural beam; introducing a torsion correction term and an outer frame equivalent flexibility; the flexibility is accumulated, and the reciprocal is taken to obtain the out-of-plane total rigidity; and the out-of-plane rigidity is applied to construction of an impact kinetic equation. A traditional Euler-Bernoulli beam theory cannot effectively consider the influence of rigidity coupling and torsional deformation of multiple sections of beams and the rigidity of an outer frame on the overall rigidity of a structure. According to the method, the out-of-plane equivalent stiffness of the novel structural beam and outer frame combined structure can be quickly estimated and obtained, the obtained stiffness parameter is applied to dynamic characteristic analysis of the gyroscope, and effective theoretical support is provided for design and engineering application of the novel structural beam structure of the high-overload gyroscope in the out-of-plane direction.

The present application relates to the technical field of geological disaster prevention engineering, and particularly relates to an adjustable buffer energy-absorbing structure of a rock retaining wall, which comprises an anchoring and guiding system, a buffer energy-absorbing assembly, a driving execution mechanism and a control unit. The present application combines the innovative adjustable inverted V-shaped buffer energy-absorbing assembly with the regulation and control strategy based on the impact dynamics model to construct an efficient, self-adaptive and easy-to-maintain dangerous rock prevention and enhancement system. Through the optimal angle adjustment verified quantitatively, the method realizes the maximum dissipation of impact energy and the active control of rockfall trajectory, improves the protection capability of the traditional rock retaining wall for the key structures behind, and has important engineering application value and popularization prospect.

The application belongs to the technical field of aviation structure impact dynamics, and is a kind of crash dynamics modeling method for simplifying fuselage frame section structure of an airplane. A fuselage frame section model is established by corresponding structural characteristics of the fuselage frame section, the position and deformation mode of a large deformation region in the fuselage frame section model are determined, the large deformation region is simulated into a plastic hinge, and torque and axial force performance parameters corresponding to the plastic hinge are determined. Different gravity fields and initial velocities are given to the fuselage frame section, and the response of the plastic hinge of the fuselage frame section structure at different deformation degrees is calculated. Based on the plastic large deformation principle, the advantages of simple connection relationship model, fast calculation efficiency and high calculation accuracy of the finite element method are fully combined, the calculation efficiency of the crash finite element analysis of the fuselage frame section of the airplane is improved, and potential calculation non-convergence problems in the calculation of the plastic large deformation region of the fuselage frame section structure of the airplane can be avoided, the design cycle of the airplane structure adaptability is shortened, and the application prospect is great.

A method for calculating the impact compression reaction characteristics of energetic structural materials (ESMs) is proposed. The method combines impact dynamics and chemical reaction kinetics, and takes into account the static pressure parameters of products and the microstructure of materials. A theoretical model of impact reaction is established, and the wave specific volume, impact temperature, and reaction temperature of materials are calculated and corrected. The correlation mechanism between the microstructure and macroscopic reaction behavior of ESMs under impact compression is established, which effectively improves the calculation accuracy of the impact compression reaction characteristics of ESMs.

This invention belongs to the field of barrel life research, specifically disclosing a microscale projectile-barrel impact behavior modeling method. This method includes identifying the atomic composition and atomic mass fraction of the projectile-barrel material; determining the potential energy trap depth and zero-potential-energy interatomic spacing of each component atom; determining the two-body potential energy function between atoms in the projectile-barrel material; establishing the polycrystalline structure of the projectile-barrel material; establishing a crystal model of the projectile-barrel material; and solving the microscale projectile-barrel impact behavior using the momentum mirror method. Compared with existing technologies, this invention establishes a model of the projectile-barrel impact behavior of the barrel material from a microscale modeling perspective, improves the two-body potential energy function between atoms in the projectile-barrel material, and links molecular dynamics and impact dynamics, laying the foundation for the study of the mechanism of plastic damage in the barrel bore.

This invention relates to the field of structural impact dynamics and numerical calculation technology, specifically disclosing a numerical prediction method for the nonlinear response of a variable cross-section beam under multi-point time-series strong impact. The method includes: S1, determining the parameters of the variable cross-section beam and establishing an equivalent multi-degree-of-freedom model; S2, determining the multiple loading conditions for the multi-point time-series strong impact; S3, calculating the stiffness changes of each element under large deformation effects; S4, calculating the initial plastic limit displacement difference at both ends of each element; S5, calculating the stiffness matrix affected by geometric nonlinearity at the current moment; S6, calculating the stiffness matrix affected by material nonlinearity at the current moment; S7, calculating the total internal force at the current moment; S8, calculating the acceleration at the current moment; and S9, calculating the velocity and displacement at the current moment. This invention achieves numerical prediction of the nonlinear response of a variable cross-section beam under multi-point time-series strong impact by establishing an equivalent multi-degree-of-freedom model, combining geometric and material nonlinearity to correct the stiffness matrix, and solving the equations of motion.

The utility model discloses a buffer vertical impact dynamic test large-scale platform, which comprises an upper installation platform, a lower installation platform, a plurality of guide columns, an impact module, a balancing weight, an electromagnet, a motor, a force sensor and a buffer displacement detection unit, the impact module is installed on the guide column in a sleeving mode, the balancing weight is fixedly installed above the impact module, the motor is fixedly installed on the upper installation platform, an output shaft of the motor is connected with the electromagnet through a transmission chain, the electromagnet is located over the balancing weight, and the force sensor is fixedly installed below the impact module. The buffer displacement detection unit is used for detecting the length change of the buffer. The buffer vertical impact dynamic test large-scale platform is reasonable in structure, and can carry out a buffer vertical impact dynamic test so as to obtain impact force data and buffer length change data.

The present invention belongs to the technical field of ice crystal particle impact experiments, and provides a method and device for determining the critical fragmentation velocity of partially melted ice crystal impacts. In view of the impact problem of partially melted ice crystals, the present invention conducts experimental research on partially melted ice crystals, combines experimental data with the impact dynamics model, and obtains a dimensionless model of the critical fragmentation velocity of partially melted ice crystals, which has important guiding significance for many fields involving ice crystals. For example, in the aviation field, it can help study the safety of aircraft engines and other components when they encounter impacts from partially melted ice crystals when the aircraft passes through clouds, and provide key parameters for the design and optimization of aircraft anti-icing and de-icing systems.

The invention relates to the field of structural design and impact dynamic modulation of sports equipment and handheld impact tools, and discloses an inertia-elasticity coupling modulation assembly based on controlled micrometric displacement and a dynamic regulation and control method thereof. The assembly can be embedded into an internal cavity of sports equipment or a tool and comprises a mass block, an elastic body or an elastic element, a limiting structure and an optional guide structure. The mass block generates controlled micro-displacement relative to the main body structure due to the inertia effect when high-speed impact or impact operation occurs to equipment or tools, and the elastic body or the elastic element is driven to deform in a controlled range and generate elastic restoring force, so that transient dynamic response of the impact process is participated in a millisecond-level time scale, and the impact force is generated. And the time distribution, the energy transfer mode and the transient stability of the structure of the impact force are modulated. Through the inertia-elasticity coupling modulation mechanism, on the premise that the original geometric structure and macroscopic mass distribution of equipment or tools are not obviously changed, the force output consistency in the impact process can be improved, transient torsion and local deformation sudden change caused by eccentric impact are restrained, and the impact strength of the equipment or tools is improved. And the stability and the fault tolerance of the equipment or the tool under the impact working condition are improved. The assembly has various structural forms and adjustable parameters, is suitable for handheld impact tools such as tennis rackets, badminton rackets, squash rackets, baseball bat, golf clubs, hammers, axes and the like, and has good universality and industrial application prospects.

The utility model discloses a two-dimensional SHPB test device, and belongs to the field of material impact dynamics tests. Comprising two incident rods, two transmission rods and a two-dimensional loading mechanism, and the incident rods and the transmission rods are uniformly divided into two groups and are symmetrically arranged on two sides of a test sample; the incident bar and the transmission bar in each group are coaxial and are oppositely arranged on two sides of a test sample; each incident bar is provided with a first end and a second end, the two-dimensional loading mechanism is provided with two loading ends, each loading end corresponds to one incident bar and is in contact with the first end of the corresponding incident bar so as to apply an axial load to the corresponding incident bar, and the second end of each incident bar is in contact with a stress surface of a test sample, so that when the dynamic mechanical property of the test sample is tested, the loading ends of the loading ends are in contact with the stress surface of the test sample. The two incident bars can transmit the load applied by the two-dimensional loading mechanism to a test sample, so that the test sample is subjected to two orthogonal compression waves with the same size at the same time.

The application relates to an alternating impact disassembly operation robot dynamic characteristic modeling method and system, and relates to the technical field of robot control. Firstly, the dynamic characteristics of the robot joint side and the motor side are comprehensively considered, a flexible joint dynamics model of torque driving is established, and the influence of joint flexibility on impact response is determined. Then, an exponential inelastic continuous contact model estimation method is used to estimate the radial impact force and the tangential friction force, an alternating impact dynamics model is constructed, the momentum change and the nonlinear dynamics effect in the impact process are quantified. Finally, a multi-space dynamic characteristic coupling model is established, the interaction mechanism of the joint space, the impact contact space and the task space is systematically analyzed, the accurate post-impact speed is output, the impact force control strategy is generated, the dynamic response accuracy of the robot under the alternating impact operation is improved, the active utilization of the impact effect of the robot is realized, and the stability, accuracy and efficiency of the disassembly operation are ensured.

The application discloses a kind of underwater impact test loading devices, including experimental pool, impact device and gravity potential energy conversion device;Experimental pool is used to provide underwater impact test environment;Impact device is set in the upper of experimental pool;Gravity potential energy conversion device is set in the side of experimental pool;Gravity potential energy conversion device converts gravity potential energy into traction, and gravity potential energy conversion device pulls impact device to impact test on the test piece of test piece tooling.The application efficiently transmits and converts the horizontal impact kinetic energy required by underwater impact body by energy conversion mechanism through vertical gravity power;At the same time, through the transmission path and the structure design of key components, the friction loss is reduced, the transmission stability and repeatability are improved, and the demand of precise controllable loading for underwater impact dynamics test of large water-related engineering structure is met.

The invention belongs to the technical field of cable conduits, and discloses a cable conduit impact effect equivalence analysis method and a portable testing device, and the method comprises the following specific steps: an impact dynamics simulation module: S1.1, inputting impact simulation parameters required by impact simulation analysis; compared with the prior art, the device has the following advantages: high portability and field adaptability: the device can be easily transported and quickly deployed in any field due to the modular detachable design, and the wide base and the adjustable support ensure the test stability and the adaptability to pipes with any length; the testing process is accurate and safe, mechanical height setting and releasing are achieved, energy setting is visual, the testing process is simple and rapid, and the detection efficiency is greatly improved; and good equivalence: by replacing the impact head and setting energy, test conditions of various industrial standards can be flexibly simulated, and the test result has good consistency and comparability with a traditional drop hammer test.

The application discloses a calculation method and system for deformation and failure modes of front and rear panels under fragment impact, and belongs to the technical field of impact dynamics and structure protection. In view of the hydrodynamic ram effect caused by high-speed fragment impact, three core parameters of dimensionless impact strength Π1, water-impact wave strength Π2 and cavitation extrusion load strength Π3 are constructed, which respectively represent three kinds of mechanical mechanisms of direct impact of fragments, bending driven by shock waves and extrusion of cavitation expansion. A quantitative criterion of the failure modes of the front and rear panels and the product of Π1 and Π3 is established, and three kinds of failure modes of shear impact, petal break and petal tearing are divided. Meanwhile, a linear model of local deformation and Π1, and a binary linear model of global deformation and Π2 and Π3 are established. The method does not need complex simulation, and the evaluation can be completed in seconds, the calculation efficiency is greatly improved, the prediction accuracy is greater than or equal to 93%, and is suitable for the impact resistance design and safety evaluation of liquid storage structures such as liquid tanks and oil tanks.

The present invention relates to a method for identifying impact dynamic parameters of a large-scale explosion-proof structure. The identification method comprises determining the impact dynamic parameters of the structure to be identified; measuring the geometric parameters of the structure to be identified; measuring the dynamic response of the structure to be identified under an explosion impact; establishing a numerical model of the structure to be identified under the explosion impact and constructing an objective function; using an improved MWOA-GPO algorithm to quickly find the optimum in a parameter range; and calculating the mechanical parameters corresponding to the minimum target value after several iterations. In view of the problems of difficulty in obtaining dynamic parameters of explosion-proof structures of large-scale protective engineering and inaccurate measurement results, the present invention proposes a method for optimizing a finite element numerical model by using the MWOA-GPO algorithm and then inverting the dynamic parameters of the structure. At the same time, based on the identification method, an identification platform for obtaining the dynamic parameters of the structure is proposed, which effectively improves the convenience and economy of obtaining the structural parameters.

The invention discloses a multi-strain-rate and multi-waveform impact load integrated excitation device and a test method, and belongs to the technical field of civil engineering mechanical tests, the multi-strain-rate and multi-waveform impact load integrated excitation device comprises a common hydraulic loading system, a drop hammer driving device loading system, a dynamic hydraulic loading system, a pneumatic driving device loading system and a blasting driving device loading system; the common hydraulic loading system comprises a common oil cylinder, and the common oil cylinder is used for outputting hydraulic static load; the drop hammer driving device loading system is used for generating a drop hammer impact dynamic load with a medium strain rate; the dynamic hydraulic loading system is used for outputting any waveform pulse dynamic load with medium and low strain rates; compared with the prior art, the device has the advantages that various forms of impact loads can be applied, static loads and dynamic loads can be applied to the same test model at the same time, then the mechanical response of deep engineering rock mass under the superposition action of high ground stress static loads and multi-form impact disturbances can be simulated more accurately, and the device has the advantages of being high in integration level, high in applicability and accurate and controllable.

The utility model relates to the technical field of highly accelerated life test systems, and discloses a wide-frequency-domain vibration test device for simulating seismic rock stratum impact dynamics. According to the device, a hammer core (21) in a pneumatic hammer (4) collides with the front wall of a sleeve (20) under the pushing of compressed air to generate earthquake-like impact vibration, and vibration energy is conducted to a table top (1) through a square block seat (3) and a net-shaped layer (2); by adjusting the number, the installation direction and the angle of the pneumatic hammers, the table top is excited to generate three-axis six-degree-of-freedom wide-frequency-domain random vibration, and the device is suitable for high-frequency and wide-frequency-domain vibration testing. The device controls the pressure of compressed air through the electric proportional valve (10), collects and feeds back vibration data in real time through the vibration acceleration sensor (11), forms a closed-loop control system, realizes accurate regulation and control of vibration energy, and meets the requirements of high-acceleration service life testing of various products.

The invention relates to an arm blunt strike protection performance detection device based on dynamic data acquisition, and the device comprises a strike execution module which comprises a linear guide rail, a servo motor and a balancing weight, and the tail end of the strike execution module is provided with a standard shield impact head; according to the bionic arm module, a skeleton layer is of a 235 rigid structure, and the bionic arm module is composed of a wedge-shaped rigid structure and a cuboid rigid structure and used for simulating a human arm and conducting analysis; the data acquisition module is used for measuring impact force, torque and dynamic strain in real time, and an output signal of the data acquisition module is transmitted to a multi-channel data acquisition unit through a charge amplifier for corresponding data acquisition; and the self-adaptive clamp module comprises an adjustable lead screw supporting frame and a clamping mechanism and is used for ensuring the stability of the anti-riot shield or the test sample in the striking process. The invention also relates to a corresponding method, a processor and a storage medium thereof. By the adoption of the method, the processor and the storage medium, millisecond-level synchronous acquisition of the impact dynamics parameters is achieved, and more accurate and comprehensive data can be obtained.

This invention discloses an efficient analysis method for projectile-target separation during the penetration resistance process of a hollow heterogeneous protective structure, belonging to the field of impact dynamics. The method includes: for a given hollow heterogeneous protective structure; establishing a finite element model of the projectile; constructing a storage array for the spatial position information of the hollow heterogeneous protective structure; establishing a target drag function based on cavity expansion theory; constructing a projectile-target separation analysis model for the hollow heterogeneous protective structure; obtaining the results of the projectile-target separation analysis method using explicit dynamics methods; obtaining the storage array for the spatial position information of the hollow heterogeneous protective structure at the time of simulation termination, including projectile deformation, stress state, and the spatial position information at the time of simulation termination; further obtaining the crater morphology of the hollow heterogeneous protective structure through data processing of the storage array; and determining whether the given hollow heterogeneous protective structure will lead to projectile destruction by combining axial force and bending moment failure criteria. This invention achieves high-efficiency, low-cost, and rapid simulation analysis.

The present application discloses a method for calculating the reactivity change caused by the geometric deformation of a nuclear device. The method includes the following steps: performing initial geometric modeling on the nuclear device; setting material properties for the modeling; creating an analysis step based on the initial model; setting contact properties for the reactivity model of the nuclear device after creating the analysis step; setting loads based on the reactivity model of the nuclear device with contact properties set; meshing the reactivity model of the nuclear device after setting the loads; and calculating the meshed reactivity model of the nuclear device to obtain a calculation result. The present application improves the efficiency of the impact dynamics analysis of the nuclear device, and the result processing after the operation analysis is convenient.

The present application relates to a kind of composite-metal hybrid structure impact dynamic response analysis method, comprising the following steps: S1, according to the impulse size of actual impact load in saturation response time, impact load is simplified;S2, when actual fiber metal laminated plate deformation increases to the damage of fiber, then the influence degree of damage is analyzed and calculated by introducing the stiffness reduction coefficient of fiber composite layer;S3, according to the different deformation mode of actual fiber metal laminated plate under impact load, dynamic response calculation is carried out in stages.The present application can start from the response theoretical analysis model of fiber metal laminated plate under impact load, consider the influence of large deformation damage stage reduction coefficient and specimen boundary slip of fiber metal laminated plate, according to the effective evaluation method of fiber metal laminated plate dynamic response under impact load that theoretical model is calculated in stages by the software of Matlab programming under large deformation stage.

A simulation experiment method and device for impact dynamic disaster induced by thick and multi-layer water-bearing overburden rock, characterized in that the device comprises a sealed box, a horizontal loading module, a vertical elastic loading module, a transient impact triggering module, a water-bearing overburden rock model and an array pipe water filling module; the array pipe water filling module is installed at the bottom of the box (11) through a mounting hole and a sealing ring (63), and the upper part of the array pipe water filling module is embedded in the water-bearing overburden rock model, and the inside is provided with array water pipes (62) with different lengths, and each water pipe is connected with a separate flow valve (65) and a pressure valve (64). The vertical elastic loading module solves the difficulty of large-size rock layer simulation, and provides reliable experimental equipment for disaster simulation.