298 results about "Mechanical load" patented technology

The invention relates to a dynamic load distribution method, device and equipment based on a vehicle body controller and a medium, and the method comprises the steps: collecting the mechanical load, electrical load and thermal load data of a vehicle body in real time through a distributed sensor network, and generating multi-source heterogeneous initial load data; performing standardization processing on the initial load data, and constructing a three-dimensional data cube type standard load data set; comprehensive characterization features are extracted through feature space mapping, and a fusion load feature set containing a threshold range is dynamically generated in combination with historical data; constructing a load correlation model based on the fusion features, and mapping to generate a steering and braking control parameter combination; and according to the real-time load threshold cross-border state, dynamically adjusting the task priority, allocating real-time calculation core resources to the chassis system, and generating an optimal allocation scheme. According to the method, the problems of multi-source load data fusion failure, resource allocation rigidity and safety task response delay in the prior art are solved, and dynamic load optimization of the vehicle body control system under complex working conditions is realized.

The invention discloses a carbon fiber fuselage structure layering optimization design method and system, and relates to the technical field of material structure intelligent design, and the method comprises the steps: importing a three-dimensional CAD model of a fuselage structure, collecting physical field input parameters, integrating and generating a digital engineering package, and carrying out the temperature field calculation through a thermal coupling solver based on the digital engineering package, the method comprises the following steps: acquiring temperature distribution of a fuselage, mapping the temperature distribution of the fuselage into a thermal stress field through a thermoelastic constitutive equation, performing vector superposition on the thermal stress field and a mechanical load to generate a comprehensive stress cloud picture, starting asymmetric layering design for a high-stress region based on the comprehensive stress cloud picture, and verifying mechanical balance of layering angle combination through a balance optimization algorithm. And obtaining a layering optimization scheme. The thermal deformation sensitivity is accurately evaluated by using the thermal-mechanical coupling solver and the finite element disturbance analysis method, and thermal deformation can be effectively predicted and controlled, so that the dimensional stability and the surface quality of a final product are improved.

The invention provides a special-shaped air film hole thermal mechanical fatigue simulation part design method, which comprises the following steps of: 1, analyzing the strength and the service life of a turbine blade, and identifying a key part of the service life of a special-shaped air film hole; 2, determining that the thermal mechanical fatigue simulation piece is of a hollow structure; 3, parameters of a clamping part of the hollow simulation piece are stipulated; 4, determining the mechanical stress of the key part through three-dimensional finite element simulation of the turbine blade; 5, verifying the included angle between the principal stress direction and the growth direction of the key part of the simulation part; step 6, measuring stress by using a strain gauge under a normal-temperature initial mechanical load, and verifying whether the load is compliant or not; 7, performing three-dimensional finite element simulation analysis on the temperature field of the test piece and calculating thermal stress; 8, controlling the thermal stress distribution of the section of the simulation piece by controlling the temperature distribution; step 9, when cooling gas is introduced into the inner cavity of the special-shaped gas film hole simulation piece, carrying out a thermal mechanical fatigue test by adopting an in-phase mechanical-temperature load; and step 10, optimizing the structure of the special-shaped gas film hole and analyzing the strength.

The invention discloses a high-speed rail vehicle body aluminum alloy material corrosion fatigue performance simulation method and system, and belongs to the technical field of material corrosion fatigue testing. The method comprises the following steps: acquiring multi-source data of a high-speed rail body aluminum alloy material on an actual service route; establishing a material corrosion conversion coefficient database; obtaining an equivalent mapping relation based on the service environment and the load input set; generating a laboratory equivalent accelerated environment spectrum; and executing the laboratory equivalent accelerated environment spectrum, obtaining material failure data, and if the comparison difference is not less than a preset threshold value, correcting the calculation parameters of the equivalent mapping relation and regenerating the spectrum system. Through synchronous acquisition and fusion analysis of the multi-source environmental data and the mechanical load and in combination with the corrosion conversion coefficient database construction and closed-loop verification optimization method, the problem of test result distortion caused by separation of a laboratory simulation environment and an actual service condition in the prior art is solved.

The invention relates to the technical field of industrial robot fault diagnosis, and discloses a fault early warning and remote diagnosis method for an industrial robot electrical control system, and the method comprises the steps: obtaining a mechanical load parameter through a potential load model, an inertia load model and a basic dynamics model, obtaining an electrical state parameter through an electrical efficiency model, and carrying out the fault early warning and remote diagnosis. A correction factor is generated through a correction model in combination with the environment temperature, a dynamic current threshold value is calculated through a threshold value model based on the correction factor and a basic current threshold value, and finally health scores and fault early warning information are output through a diagnosis model in combination with the vibration acceleration and servo ring following errors. According to the method, mechanical, electrical and environmental multi-source parameters are fused, dynamic threshold adjustment and multi-dimensional health assessment are realized, normal working conditions and abnormal states are effectively distinguished, the fault early warning accuracy is remarkably improved, the false alarm rate is reduced, and a reliable remote diagnosis scheme is provided for the industrial robot.

The invention discloses an operation control method for a wind power generation system, and relates to the technical field of operation control, and the method comprises the steps: obtaining the historical operation data of a wind power generation system in a target sea area, taking an offshore environment factor as an interference factor, and coupling the time-space parameters of ocean turbulence intensity, wave load and salt spray corrosion rate; establishing a fan-marine environment digital twinborn body; operation data is acquired in real time, synchronous mapping and dynamic updating of the digital twin are realized, and a state prediction model is established in combination with historical operation characteristics; taking the maximum power generation efficiency and the minimum mechanical load as a multi-objective optimization function, and introducing a model prediction controller to obtain an optimal control sequence of the wind power generation system in a future time domain of each control period; and selecting a first control instruction in the optimal control sequence, issuing the first control instruction to a physical fan torque controller and a variable pitch system in real time, realizing rolling optimization of the wind power generation system, and obtaining a self-adaptive operation control scheme of the wind power generation system. The power generation benefit of the whole life cycle is improved.

The invention discloses a multi-gear adjusting rotary switch, which comprises a base, a shell cover, a rotary handle and a contact assembly, and is characterized in that the rotary handle is rotationally arranged between the base and the shell cover and is provided with a driving rod extending along the radial direction of the rotary handle; the contact assembly comprises a plurality of moving contact bridges which are annularly arranged in the mounting cavity with the axis of the rotating handle as the center and are of elastic structures, and a plurality of static contact pieces which are arranged on the base and are opposite to the plurality of moving contact bridges, and the plurality of moving contact bridges are connected and are located on the moving path of the driving rod. According to the technical scheme, the driving rod drives the multiple movable contact bridges to make contact with the multiple static contact pieces in the process of rotating along with the rotating handle, operation pressure is remarkably dispersed through an in-turn contact mechanism formed by the driving rod and the multiple movable contact bridges, continuous stress of a single movable contact bridge is avoided, the mechanical load and the fatigue degree of the movable contact bridges are greatly reduced, and the service life of the movable contact bridges is prolonged. The heating probability is reduced, abrasion and fusion welding risks are reduced, and the mechanical service life is prolonged.

The invention relates to the technical field of variable frequency motor control, and discloses an energy consumption optimization regulation method for a variable frequency motor of a shot blasting machine, which comprises the following steps of: acquiring a real-time current signal of the motor, and converting an endogenous high-frequency ripple form into a discrete gear signal reflecting a mechanical load through a signal processing module; according to the invention, the dependence on an external load sensor is eliminated, the adjustment basis is completely established on the electromagnetic characteristics of the motor, the control precision is improved, and the control precision is improved. Not only is the failure risk caused by sensor faults avoided structurally, but also response delay of traditional feedback control is replaced by an instantaneous feedforward mode in control logic, and close following of energy consumption and load is achieved.

The invention provides a wind power blade fatigue damage early warning method and system based on modal energy excursion, and relates to the technical field of wind driven generators. According to the method, a multi-dimensional health baseline library is established under the healthy state of a wind power blade, and a current total strain signal and temperature distribution are synchronously collected in the operation process of a fan; performing temperature-strain decoupling on the total strain by using a healthy baseline library, and accurately extracting a real mechanical strain signal caused by the mechanical load; on the basis, a working condition modal recognition method is adopted to steadily obtain a current inherent frequency and a strain modal shape from real mechanical strain; calculating a current modal energy proportion and comparing the current modal energy proportion with the health baseline to generate an offset index reflecting a modal energy localization degree; and finally, in combination with the amplitude, the duration and the dynamic evolution trend of the offset index, and in combination with a fatigue accumulated damage assessment result, performing graded early warning judgment, and realizing early perception, accurate positioning and risk graded output of the fatigue damage of the blade.

An electric power train includes an electric drive, an electric motor driven by the electric drive, and a meshing pair of a drive gear and a driven gear. The drive gear is coupled to the electric motor and the driven gear is coupled to a mechanical load. The backlash of the meshing pair of the drive gear and the driven gear is measured and estimated based on a time until a contact of teeth of the rotating drive gear and the driven gear during a startup of the electric motor. Wear of the meshing pair of the drive gear and the driven gear based on a change in the measured backlash over time during the operation of the electric power train.

The invention relates to the technical field of electromagnetic shielding rooms, and discloses a load-bearing framework and shielding panel integrated electromagnetic shielding room, which comprises a first structural shielding unit and a second structural shielding unit, the first structural shielding unit and the second structural shielding unit are alternately arranged, the first structural shielding unit comprises a first load-bearing framework, and the second structural shielding unit comprises a second load-bearing framework. The first structural shielding unit comprises a first load-bearing frame, the second structural shielding unit comprises a second load-bearing frame, the edges of the adjacent first load-bearing frame and second load-bearing frame are spliced through a multi-dimensional interlocking structure, so that an electromagnetic shielding room load-bearing framework is defined, and the splicing seam of the first load-bearing frame and the second load-bearing frame is provided with at least one zigzag electromagnetic wave attenuation path. The load-bearing frames and the electromagnetic shielding function are deeply integrated, the first load-bearing frame and the second load-bearing frame are mechanical load-bearing components, electromagnetic shielding is achieved through zigzag electromagnetic wave attenuation paths of the splicing seams and the magnetic conductive filling materials, an independent shielding framework does not need to be additionally arranged, and the overall structure is simplified.

The invention discloses a building material mechanical testing system based on multi-algorithm fusion, and belongs to the technical field of building material testing, and the system comprises an initial damage quantification module which is used for obtaining detection information of a tested material test piece before mechanical loading and generating a quantitative evaluation result; the loading and information acquisition module is used for applying a mechanical load to the tested material test piece with the generated quantitative evaluation result and acquiring a mechanical response signal and a microscopic state signal of the tested material test piece; the damage analysis module is used for calling a preset second data processing algorithm and analyzing and generating a dominant damage path; and the diagnosis and prediction module is used for integrating the associated data atlas and the dominant damage path information, generating a material performance diagnosis report and constructing a prediction model through a preset third data processing algorithm. According to the method, the initial damage of the tested material test piece is quantified, so that systematic deviation of a test result caused by neglecting the initial damage is corrected.

The invention discloses a thermoelastic topological optimization method for a thermal structure under a thermal stress singular problem, and belongs to the technical field of thermoelastic topological optimization of thermal structures. The method comprises the following steps: firstly, performing finite element modeling and topological optimization on a thermal structure to realize a clear configuration; thirdly, establishing a thermoelastic topological optimization model, and connecting nodes on the original fixed boundary by using a super spring unit to provide weak rigidity constraint; a mechanical displacement component and a thermal displacement component are obtained by superposing the mechanical load equation and the thermal load equation respectively, and a final thermal deformation response is obtained; performing sensitivity analysis according to the thermal deformation response; finally, on the basis of the sensitivity information and a gradient optimization algorithm, carrying out updating iteration on the design variables, and setting a maximum iteration step and a convergence criterion; and deleting the units lower than the threshold after optimization, and retaining the units higher than the threshold to obtain the innovative topological structure after thermal structure optimization. According to the method, the hinge phenomenon, the gray scale problem and the material-free effect of design using fixed boundary conditions can be avoided, and the method is beneficial supplement to an existing thermoelastic topological optimization method.

The invention discloses an energy-saving and consumption-reducing tunnel excavation method of a cantilever type heading machine under the action of gravity. The energy-saving and consumption-reducing tunnel excavation method comprises the following steps: step 1, drawing a geological form map; step 2, identifying an excavation contour line of the tunnel; step 3, constructing an initial free face; step 4, constructing a contour boundary groove; 5, drilling holes in the tunnel face at intervals, and sequentially stretching a rock stratum crushing device into each drill hole to perform fracturing operation; 6, the cutting head is controlled to conduct circuitous cutting in the trend of the rock stratum; in the excavation process, a rock stratum crushing device is used for moving along a cutting path; and step 7, trimming the contour boundary groove. According to the invention, the contact time of the cutting pick and the hard rock can be effectively reduced, and the abrasion of the cutting head is reduced; the rock is caved by utilizing gravity, so that the excavation efficiency is improved; the mechanical load is optimized, and the service life of equipment is prolonged; and meanwhile, the stress is released step by step, and the probability of sudden collapse risk is reduced. The method is suitable for the technical field of tunnel construction.

The invention discloses a method for predicting high-temperature and complex stress of a ceramic-based composite material based on strain control damage evolution, and belongs to the technical field of stress prediction of ceramic-based composite materials. The method comprises the following steps: determining material high-temperature performance degradation conditions according to temperature; the total strain (mechanical strain and thermal strain) of the material is calculated, and then based on a three-dimensional failure criterion of strain control, six damage initial criterion equations including stretching and compression in the warp direction, the weft direction and the out-of-plane direction are constructed; establishing an evolution model of damage coefficients by introducing a coupling mechanism of damage factors in different directions; combining a multi-linear constitutive relation of the ceramic matrix composite material to construct a rigidity degradation matrix, and realizing rigidity adjustment of the failure unit; and finally deducing a stress-strain relation equation to complete stress prediction of the material under the conditions of high temperature and complex load. The prediction method provided by the invention can accurately predict the complex stress state of the ceramic matrix composite material under the combined action of the high temperature and the mechanical load.

The invention provides a clutch pressure plate thermal deformation simulation method, system and device and a medium, and belongs to the technical field of automobile clutches. A three-dimensional model of a dry diaphragm spring clutch is obtained, and a clutch heat engine coupling deformation finite element model is established; setting a constraint set point at a preset position; calculating the density of heat flow applied to the friction surface of the pressure plate; respectively calculating a pressure plate temperature field simulation result and a pressure plate thermal mechanical coupling deformation simulation result; outputting a calculation result as a simulation result file; and configuring the thermomechanical coupling deformation simulation result of the pressure plate to the temperature distribution cloud chart of the pressure plate, respectively extracting and analyzing the axial displacement of the inner side and the outer side of the friction surface of the pressure plate, and calculating to obtain the thermomechanical coupling deformation of the pressure plate. According to the method, multiple aspects such as heat flow density application, heat conduction, mechanical load application and heat engine coupling are comprehensively considered, the actual working condition of the clutch can be reflected, and the design and optimization requirements of the clutch are met.

Tether-based reaction control systems for spacecraft undergoing atmospheric entry or reducing orbital energy, including systems that use atmospheric drag on one or more tethers to alter the angle of attack of the spacecraft during its atmospheric transit to reduce the thermal and mechanical loads on the spacecraft during the reentry process. Systems may include tethers that together generate a force that functionally acts on the spacecraft at a point that is offset from the spacecraft's center of mass. Such systems may be either actively or passively controlled.

The invention discloses an air cooling machine power enhancement potential quantitative estimation method, and belongs to the technical field of engine power estimation. The air cooling machine power strengthening potential quantitative estimation method comprises the steps that air cooling machine performance parameters, a heat engine state reverse dragging cylinder pressure curve and a heat release rate curve are obtained; a one-dimensional simulation model of the air cooler is established, and thermodynamic cycle gas state parameters of the air cooler are obtained; establishing a three-dimensional combustion simulation model, and calculating the thermodynamic state of gas in a combustion chamber in a compression stage after an intake valve is closed; establishing a three-dimensional structure simulation model of the air cooling machine cylinder part; the three-dimensional combustion simulation model is adopted for oil gas chamber optimization, heat-mechanical load verification is carried out on all parts, and the optimized heat release rate is obtained; and inputting the optimized heat release rate into a one-dimensional simulation model, and quantitatively calculating the power strengthening potential of the air cooling machine. According to the quantitative estimation method for the power strengthening potential of the air cooling machine, the power strengthening potential of the air cooling machine is quantitatively estimated through the digital simulation technology, and the strengthening design efficiency is improved.

The invention relates to the technical field of composite materials, and discloses an electric energy storage and mechanical bearing integrated dot matrix sandwich composite material and a preparation method and application thereof. The electric energy storage and mechanical bearing integrated dot matrix sandwich composite material comprises an upper skin layer and a lower skin layer, the dot matrix core layer and the electrochemical energy storage layer are arranged between the upper skin layer and the lower skin layer; the lattice core layer is embedded in the electrochemical energy storage layer, and the lattice core layer has the bearing capacity perpendicular to the direction of the upper skin layer. The dot matrix core layer is embedded in the electrochemical energy storage layer, effective internal support is provided for the dot matrix sandwich composite material integrating electric energy storage and mechanical bearing by utilizing the characteristics of light weight and high strength of the dot matrix core layer, and the composite material is more stable in performance by combining the arrangement of the upper skin layer and the lower skin layer. The electric energy storage and mechanical bearing integrated dot matrix sandwich composite material has the effects of structural bearing, weight reduction and system structural stability improvement at the same time.

The utility model discloses a multi-layer corrosion-resistant stainless steel composite plate which comprises a base layer, a primary protection inner layer is arranged on the base layer, a middle layer is arranged on the primary protection inner layer, a secondary outer layer is covered outside the middle layer, and a coating layer is arranged on the secondary outer layer. The base layer is compounded with the primary protection inner layer through explosion, the secondary outer layer is compounded with the covering layer through explosion, and the primary protection inner layer and the secondary outer layer are compounded with the middle layer through hot rolling; the stainless steel composite plate formed by compositing five layers of base materials not only has a solid structural strength foundation, but also can bear larger mechanical load, and can adapt to a complex corrosive medium environment; the explosive cladding process provides strong interlayer bonding force, so that different material layers are tightly bonded, the layering phenomenon in the using process is prevented, the integrity and the performance stability of the composite board are guaranteed, and the hot rolling process further optimizes the interlayer bonding quality.

A seal arrangement includes a seal assembly and a seal subassembly in operable contact with the seal assembly. The seal subassembly is configured to impart energy to the seal assembly to promote sealing of the seal assembly with a mating surface. A non-sealing feature of the seal subassembly depends from the seal subassembly and is interactive with a load shoulder of a structure adjacent the seal subassembly. The seal arrangement redirects a mechanical load path through the seal subassembly to the non-sealing feature, during use. A method of protecting a seal subassembly from reverse loading is by redirecting a load path through a seal subassembly to a non-sealing feature, while also permitting pressure energizing of the seal assembly by the seal subassembly in a sealing direction. A downhole system includes a borehole in a formation, a string in the borehole, and a seal.

An insulator of the cap / pin type for an aerial electrical line comprises a dielectric element that has an outer surface in the form of a skirt that is extended by a metal cap on one side and a metal pin on the other side. It also comprises a mechanical load detection device comprising at least one strain gauge fastened to the metal cap of the insulator so as to be used to detect mechanical stresses representative of a mechanical load exerted on the electrical line.

The invention relates to the technical field of fatigue load reduction, in particular to a wind power plant torque and variable pitch cooperative control method with fatigue load reduction as the target. The method comprises the following steps: acquiring real-time and historical operation data of each fan in a wind power plant, and preprocessing the operation data; based on the preprocessed operation data, load characteristic indexes reflecting structural fatigue are extracted, and a load state vector reflecting the current fatigue accumulation trend of the draught fan is constructed; and based on the load state vector, establishing a coupling model of the influence of the generator torque and the variable pitch angle on the rotating speed response and the fatigue load, wherein the coupling model is used for reflecting the influence mechanism of torque adjustment on the low-frequency load and the inhibition effect of variable pitch adjustment on the high-frequency load. According to the method, the load state vector fusing the low-frequency mechanical load and the high-frequency pneumatic excitation is constructed, and the rain flow counting and equivalent damage theory is combined, so that the load component which has the greatest influence on the fatigue life of key parts such as a main shaft, a transmission chain, a tower and a blade root is accurately identified.

The invention discloses a titanium alloy deformation behavior testing device and method, and relates to the technical field of material deformation testing, the titanium alloy deformation behavior testing device comprises a universal testing machine, a clamping module, an ultrasonic vibration module, an electric pulse excitation module and a cooperative control module, the clamping module comprises a ceramic chuck main body, and a conductive contact is arranged on the clamping surface of the ceramic chuck main body; the ultrasonic vibration module comprises an ultrasonic vibrator, and the ultrasonic vibrator is arranged on one side of the ceramic chuck body and used for applying an ultrasonic vibration signal to the titanium alloy sample; the electric pulse excitation module is connected with the conductive contact and is used for applying an electric pulse signal to the titanium alloy sample; the cooperative control module is connected with the clamping module, the ultrasonic vibration module and the electric pulse excitation module. According to the invention, synchronous loading of mechanical load, electric pulse and ultrasonic vibration can be realized, and the clamping module solves the problems of electric conduction, vibration transmission and interference resistance, so that the deformation behavior of the titanium alloy in the electro-acoustic composite field can be accurately and reliably tested.

The invention relates to the technical field of fault prediction, in particular to a robot finger test method and system based on a robot, and the method comprises the following steps: synchronously collecting a phase current time sequence signal and an injected ultra-wideband pulse reflection signal at a servo motor drive output end of a robot finger, carrying out the alignment according to a collection timestamp, and carrying out the detection of the phase current time sequence signal; a pair of original timing electrical signals is generated. According to the invention, a phase current time sequence signal reflecting mechanical load characteristics and an ultra wide band pulse reflection signal actively detecting electrical link integrity are synchronously acquired at a driving output end of a servo motor, a multi-dimensional and information-complementary original electrical signal pair is constructed, and a phase current signal is processed to separate current ripples. And transmission harmonic energy distribution directly related to mechanical motions such as meshing of a reduction gear and rotation of a motor is extracted, so that non-intrusive quantitative evaluation of the health state of the internal transmission system of the robot finger is realized.

The invention relates to a test arrangement (10) for testing a mechanical load on a receiving device (22) designed as a component of a battery for a motor vehicle. The receiving device (22) of the test arrangement (10) has a receiving space (24), wherein an expansion device (30) is arranged in the receiving space (24) of the receiving device (22). The expansion device (30) is designed to exert pressure on opposing inner sides (32, 34) of the receiving device (22). The receiving device (22) is designed to accommodate at least one cell stack comprising a plurality of battery cells of the battery when the receiving device (22) is used in the battery. The expansion device (30) is designed to simulate a volume expansion of the cell stack by exerting pressure on the inner sides (32, 34) of the receiving device (22).In the test arrangement (10), the expansion device (30) is arranged in the receiving space (24) of the receiving device (22) instead of the cell stack. Furthermore, the invention relates to a method for testing a mechanical load on the receiving device (22).

The invention discloses a wind power blade variable pitch system multi-parameter coupling test device and method, and the device comprises a mechanical load simulation device, an electrical characteristic simulation device, a hydraulic system simulation device, an environment simulation cabin, an acoustic simulation device, a vibration simulation device, a blade tip vortex visualization device, a material response simulation device, and a control device. The system integrates various simulation devices such as mechanical load, electrical characteristics, a hydraulic system, environment, acoustics, vibration, tip vortex and material response, and can comprehensively simulate various working conditions and conditions of the wind power blade in actual operation. The comprehensive simulation capability enables the test system to more accurately evaluate the performance, reliability and durability of the blade, and provides powerful support for design and optimization of the blade.

The invention provides an endoscopic interbody fusion cage and an adjusting method thereof. The endoscopic interbody fusion cage is characterized in that a plurality of first screw holes are formed in a first vertebral plate; the lifting column comprises a plurality of lifting groups, threads are arranged on the outer surface of the lifting column, and the lifting column is rotatably connected with a first screw hole in the first vertebral plate through the threads; the driving device is a cylinder with threads on the surface; the transmission device comprises a plurality of gear sets with different diameters and tooth numbers, the gear sets are meshed with one another, threaded holes are formed in the centers of gears in the gear sets in a penetrating mode, and the transmission device is connected with the driving device in a meshed mode. One end of the steering device is fixedly arranged at the top of the lifting column; a third screw hole is formed in the second vertebral plate, and the other end of the steering device is fixedly connected with the second vertebral plate through a lead screw. According to the technical scheme, the technical problem that when left-right asymmetric angles exist between the upper vertebral plate and the lower vertebral plate, a traditional symmetric fusion cage cannot achieve mechanical load balanced transmission is effectively solved.

The invention provides a low-carbon high-conductivity aluminum alloy rod and a preparation method thereof, and aims to solve the technical problems that the conductivity of an aluminum alloy material which depends on a Cu element to improve the strength is suddenly reduced, and a pure aluminum wire cannot bear the mechanical load of large-span power transmission. The low-carbon and high-conductivity aluminum alloy rod comprises 0.5-0.8 wt% of Mg, 0.4-0.6 wt% of Si, less than or equal to 0.3 wt% of Cu, 0.05-0.15 wt% of mixed rare earth elements, 0.03-0.1 wt% of Sc, less than or equal to 0.1 wt% of Fe and Clt. 0.01 wt% of the total weight; the mixed rare earth elements are La and Ce, and the ratio of La to Ce is (2: 1)-(1: 2); and the balance of Al and inevitable impurities. The content of the Cu element is reduced, the damage of theta to the electric conductivity is reduced, rare earth is added and mixed, the impurity Fe is inhibited from forming an AlFe brittle phase, the grain boundary is purified, the electric conductivity is improved, Sc is added, an AlSc nano precipitated phase is formed, pinning dislocation and the grain boundary are formed, and the strength is improved.

The invention provides an aero-engine turbine interstage casing thermal-mechanical coupling loading test device, which comprises a mechanical loading test tool clamp, a temperature field control system and a test assembly, and is characterized in that the test assembly is used for simulating a turbine interstage casing assembly and is installed on the mechanical loading test tool clamp; the mechanical loading test tool clamp is used for composite loading of radial force and axial force of the test assembly. The temperature field control system comprises a cooling system and a heating system, and the cooling system and the heating system enable the test assembly to reach an expected target temperature field by controlling the temperature to adjust the current of the heater and the flow of cold air. The device has the advantages of being simple in structure, flexible to install, high in control precision, easy to operate and the like, and can be used for controlling the deformation discordance of the turbine interstage casing supporting plate and applying the mechanical load of the casing, so that an interstage casing outer ring stress-strain assessment point reaches the working state of an engine, and the working efficiency of the engine is improved. And checking whether the strength design of the inter-stage casing meets the expectation or not.