993 results about "Substructure" patented technology

The invention relates to a deep-valley long-span bridge substructure construction risk evaluation method and system in combination with static and dynamic evaluation. The method comprises the following steps: S1, extracting a bridge accident occurrence reason in a case library to establish a deep-valley long-span bridge substructure construction risk evaluation index system; s2, performing static assessment process division on each risk source, dividing risk levels according to coupling results, and discriminating major risk sources; s3, constructing a Bayesian network structure; s4, verifying and optimizing the structure of the Bayesian network; s5, determining a dynamic evaluation result; according to the method, the comprehensiveness and accuracy of risk identification are effectively improved, the influence of the quantity difference of different dangerous elements in different index systems on the evaluation result in a single evaluation method is reduced, and the influence of subjective judgment of experts on the result can be reduced by combining qualitative and quantitative judgment; the accuracy of an evaluation result is prevented from being reduced by a single evaluation standard; the influence degree of a risk source on an accident result is accurately reflected, and risk management and control measures are provided for safety construction of the lower structure of the deep-valley long-span bridge.

The invention provides a full-space circularly polarized metasurface with identical amplitude modulation, and relates to the technical field of electromagnetic regulation and control of novel artificial electromagnetic materials. The metasurface comprises M * M metasurface units which are arranged in an array, wherein M is equal to 2, 3, 4,...; in the metasurface unit, a first metal layer comprises a first substructure and a second substructure; the first substructure is a gear and comprises four equidistantly distributed tooth roots, a pair of transverse tooth roots are equal in length, and a pair of longitudinal tooth roots are equal in length; a concentric ring is arranged in the gear ring of the first substructure; the second substructure is arranged in the concentric circular ring and comprises a double-E structure and a cross structure; openings of the double-E structure are opposite, the double-E structure is provided with two symmetry axes passing through the circle center of the gear ring, and the cross-shaped structure coincides with the two symmetry axes. The second metal layer is a metal plate etched with an annular metal groove; the first and third metal layers have the same structure. In the metasurface, a plurality of metasurface units with different polarization structures are designed, three independent functions can be realized, and the metasurface is rich in function, small in size, high in efficiency and high in integration degree.

The invention provides a multi-scale while-drilling acoustic imaging logging device and method. An eccentric acoustic logging acoustic system and an active transmitting and receiving ultrasonic logging acoustic system are oppositely embedded in the outer side face of a drill collar. The eccentric acoustic logging acoustic system measures radial and circumferential acoustic characteristics of medium and long-distance stratums in an eccentric transmitting and receiving mode; the active transmitting and receiving ultrasonic logging acoustic system measures circumferential acoustic characteristics of a near-well-wall stratum in an up-down transmitting and middle compensation receiving mode; determining real-time azimuth information of rotation of the device by using an azimuth detection module; the main control electronic bin is in communication connection with all the substructures, transmits instructions and obtains sound waves, ultrasonic pulse waves and azimuth information, and sound velocity imaging data of near-well-wall stratums and medium-long-distance stratums are formed. By applying the device, the problems of small detection range, low measurement resolution, poor imaging precision, single measurement information and the like in the prior art can be solved, and comprehensive and fine evaluation on heterogeneity and anisotropy of underground geology and accurate detection on anomalous bodies can be synchronously realized.

Disclosed herein is a buoyant structure for offshore deployment. The buoyant structure comprises a first deck having a first channel through the first deck; a second deck having a second channel through the second deck, wherein the first deck and second deck are coupled to each other and arranged spaced apart from each other; and a plurality of floatable substructures coupled to and around at least one of the first deck and the second deck, the plurality of floatable substructures arranged spaced apart from one another, wherein the first channel and the second channel are aligned to receive at least a portion of a tower of a wind turbine.

The invention discloses an inductive process mining method and system based on local structure optimization. The method comprises the following steps: acquiring an event log executed by an actual business process; mining an original process tree model from the event log, searching and identifying an inaccurate structure in the original process tree model, and extracting a corresponding sub-log; iteratively optimizing the inaccurate structure in the sub-log to obtain a new sub-structure set; the new substructure set is combined by a Cartesian product to obtain a new substructure combination, a new substructure in the new substructure combination replaces a corresponding inaccurate structure in the original process tree model to obtain a result process tree model, the result process tree model is converted into a Petri net model, quality indexes fit and precision of the model are evaluated, a comprehensive quality index F-measure is calculated, and a final process tree model is obtained. And finally, selecting a Petri net model with the highest F-measure as output. According to the method, the model mining efficiency is improved, possible losses are reduced, and it is guaranteed that the high-quality structure is not affected while the inaccurate structure in the process model is improved.

The present disclosure relates to a solar plant with solar panels (2, 2′) which are prefabricated in a leporello folding (3) which can be unfolded in an unfolding direction (A), and a substructure on which the solar panels are arranged, wherein the substructure is designed to be flexible in the unfolding direction (A) and is connected to the solar panels in a positionally fixed manner in such a way that the leporello folding (3) of the solar panels can be unfolded with the substructure (8, 9, 10, 24) and determines angular positions of the solar panels (2, 2′) relative to one another.

A substructure for footwear can be produced. An inner half-shell of an intermediate layer forms a foot support and a lower, adhesion-promoting layer is produced by heating a mass, pressing the heated mass with the adhesion-promoting layer to form the inner half-shell which is then cooled. A sole area is foamed without demolding the half-shell in a mold part, wherein a press die is introduced into the mold part for pressing the mass with the adhesion-promoting layer. After removal of the press die a mold cavity is placed sealingly on the mold part, so that a cavity in the form of the sole region remains between the lower, adhesion-promoting layer and the mold cavity, into which a plastic is injected or foamed.

The invention belongs to the technical field of underground structure tests, and provides a deep underground structure pseudo-dynamic test method and device.The method comprises the steps that a numerical substructure and a test substructure are constructed, and an interaction boundary is arranged between the numerical substructure and the test substructure; and compensating the boundary prediction data according to the inertia force compensation coefficient based on the numerical sub-structure in each loading process, and loading the compensated prediction data to the test sub-structure, so that the test sub-structure outputs prediction response data and updates the rigidity of the numerical sub-structure, and determining a target balance force according to the prediction response data based on the numerical simulation substructure, driving a next loading process by using the target balance force, and obtaining a dynamic response rule of the soil-structure system when respective boundaries of the numerical simulation substructure and the test substructure meet displacement coordination and force balance. According to the method, the initial stress state of the deep underground structure can be accurately simulated, and the accuracy of obtaining the mechanical response rule of the underground structure is improved.

The invention provides a four-mass gyroscope structure which comprises a base, a coupling mechanism, a reverse connecting rod mechanism and four substructures with the same structure, and every two adjacent substructures are symmetrically arranged and connected through the coupling mechanism and the reverse connecting rod mechanism; the substructure comprises a sensitive mass block, a detection assembly and a driving assembly, the driving assembly is distributed in the driving direction of the sensitive mass block and connected with the sensitive mass block through a driving vibration transmission beam, and the detection assembly is located in the detection direction of the sensitive mass block and connected with the sensitive mass block through a driving vibration transmission beam. And the first vibration decoupling elastic assembly is connected with the sensitive mass block. The design of the coupling mechanism and the reverse connecting rod mechanism is adopted for the two adjacent substructures, so that the driving interference mode is far away from the working mode, and the environmental adaptability of the gyroscope is improved; and meanwhile, the detection work is in a reverse mode, the interference of the detection of a same-direction mode is avoided, a common-mode error signal is also eliminated by a differential working mode, and the performance of the gyroscope is improved.

The invention relates to a method for calculating dislocation structure energy based on discrete dislocation kinetics, which comprises the following steps of: decomposing strain and stress generated by plastic deformation in a crystal into an elastic field generated by dislocation in an infinite continuous medium and an additional field used for correcting real boundary conditions; and the stress and strain states of the target crystal material under the actual plastic deformation condition can be accurately captured, so that the influence of a real boundary on the plastic deformation process is deeply reflected. Dynamic evolution of a large number of discrete dislocation sections is directly considered through the discrete dislocation dynamics theory, the plastic behavior of a material is essentially simulated, the evolution process of a dislocation substructure can be directly captured, the plastic deformation mechanism of the material is essentially reproduced, and then a calculation formula of dislocation structure energy is deduced; the calculation precision of dislocation structure energy is improved, and the internal mechanism of different plastic deformation behaviors of the crystal material can be deeply understood.

The invention discloses a wind tunnel-pool combined loading floating fan distributed hybrid test method, which comprises the following steps of: establishing a floating fan multi-body / multi-physical field collaborative reduced scale criterion, dividing a floating fan into two independent physical models and two independent numerical models, and placing the two independent physical models and the two independent numerical models in different laboratories; integrating a physical model, a numerical model, a loading system and a measurement system, and building a floating fan physical-numerical distributed hybrid test platform; and carrying out data interaction and closed-loop control on the physical-numerical hybrid test platform. A fan and a floating platform are adopted as two relatively independent test substructures, test loading or computer simulation can be carried out in different laboratories by establishing different similarity criteria and geometric scale ratios, a collaborative online test and pneumatic-hydrodynamic load loading under the coupling action of wind, waves and flow are carried out through network interaction data, and the test efficiency is improved. The technical problems of environment load high-precision simulation and dynamic coupling response in a reduced scale model test are solved.

The invention provides a direct comprehensive modeling method for a helicopter tail rotor / tail beam coupled substructure, which comprises the following steps of: constructing a blade model, and dispersing the blade model to obtain a mass matrix, a rigidity matrix, a damping matrix and a generalized force vector expression of a single blade; establishing a structural kinetic equation of the tail beam; and finally, according to the displacement boundary condition of the joint of each paddle and the tail beam, converting the paddle structure dynamic equation, and assembling the rigidity matrix, the damping matrix, the mass matrix and the generalized force vector of each paddle after conversion with the rigidity matrix and the mass matrix of the tail beam respectively to obtain the structure dynamic equation of the tail rotor / tail beam coupling system. And establishing a structural dynamic model of the tail rotor / tail beam coupling system. The method is simple and reliable in modeling process and high in universality, is not limited by the distribution type of the tail rotor, can be applied to the non-uniformly distributed tail rotor, and provides a new thought for coupling analysis of the tail rotor / tail rotor and rotor wing / fuselage of the helicopter, dynamic characteristic solving of the tail rotor and analysis of stability.

The invention belongs to the technical field of structural engineering, and particularly relates to a fabricated steel frame beam column substructure capable of comprehensively defending against earthquakes and progressive collapse. Shearing force and axial tension / pressure generated between the cross beam component and the stand column component are borne through the multifunctional mechanical hinge, the damage degree of the substructure is reduced, and the safety of the substructure is guaranteed; under the action of large earthquakes and giant earthquakes, the multifunctional mechanical hinge rotates and generates plastic deformation to consume energy and consume energy generated by the earthquakes, meanwhile, the pre-tightening suspension component is tensioned, progressive collapse is avoided, and the progressive collapse resistance of the substructure is improved; when the substructure is close to collapse under the action of an earthquake, the pre-tightening suspension component suspends and bears the cross beam component, so that the vertical pulling capacity of the substructure is improved, and the consequence of continuous collapse of the substructure is relieved.

Present disclosure provides a test method and system for a seismic isolation structure, the method comprising: loading driving displacement time history signal into a substructure of the structure, recording restoring force time history feedback signal of the substructure; applying restoring force time history feedback signal to numerical substructure of seismic isolation structure, solving dynamic response of numerical substructure, recording structural displacement response time of the numerical substructure; calculating root-mean-square error (RMSE) of driving displacement time history signal and structural displacement response time signal; judging whether the RMSE is less than a threshold; if the RMSE is less than the threshold, ending the experiment; if the RMSE is not less than the threshold: correcting the time history signals according to a model identification algorithm, obtaining a corrected driving displacement time history signal of the next iteration, loading the corrected driving displacement time history signal onto the substructure, and repeating the steps.

The invention discloses a bridge substructure modeling scheme generation method and device, equipment and a medium, and relates to the technical field of bridge engineering, and the method comprises the steps: obtaining bridge superstructure design input parameters, constructing substructure design task information, and generating design parameters through big language model reasoning; and a modeling script is automatically generated, and structural response calculation is carried out. Different modeling strategies are judged and executed according to the calculation result, finally, a target modeling scheme meeting the requirement is intelligently generated, design parameter generation and automatic modeling of the bridge substructure in a non-standard bridge type scene are achieved, and the design efficiency and accuracy are improved.

A method for rapidly solving transient dynamics of a crack-containing bearing structure of a bogie belongs to the technical field of bogie structure dynamic analysis, and comprises the following steps: acquiring a three-dimensional geometric model of the bearing structure, the geometric dimension of a crack and the position coordinate dimension of the crack; dividing the finite element model of the bearing structure, and carrying out grid division processing on the crack surface; selecting a main degree-of-freedom node of the finite element model on the surface of the bearing structure and the crack surface; performing substructure analysis on the finite element model of the bearing structure; obtaining a mass matrix, a damping matrix and a stiffness matrix of the finite element model of the bearing structure after the degree of freedom is reduced; carrying out constraint simulation on a crack surface node by adopting a one-way nonlinear rigidity unit; processing constraint boundary conditions; processing the excitation load; and solving a dynamic second-order differential equation set, and judging whether the crack surface is in contact or not. According to the method, the opening and closing effects of the crack can be considered, the transient dynamic response of the crack-containing bearing structure under the action of the external load is obtained, and the solving precision and efficiency are both considered.

The invention belongs to the technical field of manufacturing of low-alloy high-strength steel, and particularly relates to atmospheric corrosion resistant HC260LA low-alloy high-strength steel and a production method of the atmospheric corrosion resistant HC260LA low-alloy high-strength steel. 0.15% to 0.30% of Si; 0.40% to 0.60% of Mn; 0.06% to 0.10% of P; less than or equal to 0.015% of S; 0.02% to 0.08% of Al; 0.10% to 0.20% of Cu; 0 to 0.15% of Ti; 0 to 0.09 percent of Nb; 0.001% to 0.006% of N; and the balance of Fe and inevitable impurities. According to the method, the blocking effect of segregation of P-Cu elements on the grain boundary on a corrosion path is utilized, low-temperature rolling is combined, a three-dimensional corrosion-resistant system of fine grain strengthening, substructure strengthening and rust layer protection is constructed, and the weather resistance, the corrosion resistance and the mechanical property are jointly improved.

A fastening system for covering elements, the fastening system comprising an anchoring profiled element that can be mounted to a substructure and a clip element that can be mounted to the covering element and latched to the anchoring profiled element, wherein the anchoring profiled element has at least one latching protrusion on each of two opposite faces and the clip element has the shape of a U with a central web and two legs, and wherein, in the latched position, the clip element extends over the anchoring profiled element in the manner of a clamp and each leg latches to a latching protrusion in the manner of a snap hook.

The invention belongs to the technical field of gear transmission, and discloses a dynamic modeling method of a flexible bevel gear system considering meshing point change, which is used for analyzing vibration response and dynamic stress response characteristic laws of the bevel gear system in a traveling wave resonance state. And further analyzing the traveling wave resonance phenomenon of the spiral bevel gear system in the aero-engine accessory casing. A three-dimensional shell unit and a beam unit are adopted to establish a bevel gear pair finite element entity model. A dynamic model of the flexible bevel gear system considering meshing point changes is established by adopting a substructure modal synthesis method and a rotation modal projection method. The reliability of the provided model is verified through a finite element entity model and an experimental test result. On the basis, dynamic response and vibration stress experiment tests are combined, and the traveling wave resonance phenomenon of the bevel gear system is researched. The research result of the provided model has theoretical significance on design and fault monitoring of the aero-engine bevel gear system.

The invention provides a holosymmetric four-mass gyroscope structure which comprises a substrate, a plurality of coupling mechanisms, a plurality of reverse connecting rod mechanisms and four substructures of the same structure, the four substructures are symmetrically arranged in pairs, and every two adjacent substructures are connected through the corresponding coupling mechanism and the corresponding reverse connecting rod mechanism; each substructure comprises a sensitive mass block and a plurality of capacitor assemblies, the plurality of capacitor assemblies are symmetrically distributed in the driving direction and the detection direction of the sensitive mass block, a vibration decoupling mechanism is arranged between the adjacent capacitor assemblies, and the vibration decoupling mechanisms are connected with the sensitive mass block. Adjacent substructures are connected through a coupling mechanism and a reverse connecting rod mechanism, so that a driving interference mode is far away from a working mode, and the environmental adaptability of the gyroscope is improved; and meanwhile, the detection work is in a reverse mode, so that the interference of the detection of a same-direction mode is avoided, a common-mode error signal is also eliminated by a differential working mode, and the performance of the gyroscope is improved.

A portable agricultural cultivation and / or microscopy facility is provided. The facility includes an adaptable, portable superstructure having a first collapsed state and a second expanded state, wherein in the first collapsed state the superstructure is transportable from one location to another, and wherein in the second expanded state, the superstructure defines one or more expandable compartments of the portable agricultural cultivation and / or microscopy facility. The facility further includes a substructure configured to operatively engage with the superstructure, wherein said substructure, when operatively engaged to the superstructure, is configured to support the superstructure.

A method for erecting a portion of a transportation structure including two assemblies of tube segments, capable of being placed under low air pressure and through which pods may travel substantially free of air friction, the method including: (a) erecting a substructure including a first plurality of girders forming a first transportation pathway, a second plurality of girders forming a second transportation pathway and a plurality of platforms forming a service pathway, the erecting step including conveying with vehicle(s) the girders and platforms along the first and / or second transportation pathway, positioning them and having the vehicle(s) return along the service pathway, (b) conveying, with vehicle(s), the tube segments along the first and / or second transportation pathway, positioning them and having the vehicle(s) return along the service pathway. A portion of a transportation structure is also provided.

A windmill construction (10), comprising a rotor-nacelle assembly (12) with blades (14), a tower (16), a substructure (20) and a foundation (22). The substructure (20) comprises a first guide collar (24) and a second guide collar (26) for support of the tower (16), said first guide collar (24) being located in a lower part of the substructure (20) and said second guide collar (26) being located in an upper part of the substructure (20). The substructure (20) comprises a jack-up assembly (30) for receipt of modular tower segments (18), said tower segments (18) are arranged to be assembled in the substructure (20) and erectable by the jack-up assembly (30) to produce an assembled tower (16). The invention is also directed to a method for assembly of a windmill construction.

A method of manufacturing a semiconductor die package is provided. The method includes providing a lead frame having a substructure and at least one tie bar, the substructure including a terminal forming portion in electrical communication with the at least one tie bar. The method includes bonding a die to the substructure. The method includes encapsulating the substructure and the die within an encapsulation layer. The method includes performing a first cut through the terminal forming portion and the encapsulation layer to form side terminals while maintaining all tie bars substantially intact. The method includes electroplating the side terminal. The method includes performing a second cut through the tie bar and the encapsulation layer to singulate a semiconductor die package from the lead frame.

A profile element for attachment to the rear side of a façade panel, which in turn is fastened to a base such as a building surface or substructure. The profile element is formed in one piece and includes three functional sections arranged one after another: a fixing section for fixing the profile element to a base; a support section for attachment to the façade panel; and a spacer element which, in the installed state, ensures the correct distance between the base and the rear side of the façade panel. The profile element is extendible by a supplementary element, which has functionally similar elements and is only used if required by the geometry of the façade panel. The supplementary element is usable for positive connection to the profile element of an adjacent façade panel. Such a façade system provides flexibility for a wide variety of types and dimensions of façade panels.

The invention discloses an assembly type shock insulation stair substructure in a multi-layer frame structure, which is formed by integrally connecting a plurality of upper and lower layers of staircases in the multi-layer frame structure, the bottom of the assembly type shock insulation stair substructure is supported in a frame beam of a top plate of the multi-layer frame main body structure through a shock insulation support, and a shock insulation seam is formed between the vertical face of the assembly type shock insulation stair substructure and the peripheral main body structure. Vertical isolation seams are formed between the top and the bottom of the assembly type shock insulation stair substructure and the main body structure correspondingly. A plurality of layers of staircases in a frame structure are independent from a main body structure, necessary through staircase columns are added to form an independent staircase sub-structure, a seismic isolation support is introduced to a bottom layer or a basement top plate, and the rigidity of a staircase frame sub-structure is increased by fully utilizing the supporting effect of a staircase inclined staircase plate and the rigidity effect of a filling wall; the earthquake isolation effect of the stair substructure is enhanced, the earthquake force of the earthquake isolation stair is reduced, and stair damage is greatly reduced.

This application relates to a monolithically integrated multi-wavelength topological cavity surface-emitting laser (PCSEL) array. According to one embodiment, a monolithically integrated PCSEL array includes multiple PCSELs formed from the same semiconductor layer, at least one layer of which is formed as a photonic crystal layer, or the laser also includes a separate photonic crystal layer. The photonic crystal layer includes multiple supercell structures, each with substructures having multiple independent one-dimensional parameters. At least two independent one-dimensional parameters of one or more substructures are modulated to be greater than or less than their equilibrium position to open the Dirac point of the supercell's bandgap at the equilibrium position. Around any point in the photonic crystal layer, the modulation of the two independent one-dimensional parameters of the supercell forms a vortex structure, which corresponds in parameter space to one or more turns around the equilibrium position. The supercell lattice constants of the two lasers can be different to emit lasers of different wavelengths.

A fastening assembly for a structure having a plurality of structural components fastened to a substructure includes a spacer for positioning on a substructure between adjacent structural components. The spacer is configured to maintain a desired spacing between the structural components. The fastening assembly includes at least one gripping member, the, or each, gripping member including opposed arms and a web that interconnects the arms, with the spacer being receivable between the arms. The spacer and the arms are configured so that when the spacer is received between the arms, the arms are driven away from each other so that free ends of the arms bear against respective adjacent sides of said adjacent structural components to secure the structural components to the spacer.

Seal arrangement for a joint of two joint elements, in particular realized as a monopile and a transition piece, of an offshore structure, preferably an offshore wind energy installation, in particular a substructure thereof, in which, for the purpose of producing a stable joint, an upper joint element and a lower joint element are inserted into each other in a clamping manner by means of at least one seal unit, comprising one of the joint elements and the at least one seal unit fixed to the joint element, in such a manner that the seal unit, in a joining position, is arranged between an inner joint surface of one joint element and an outer joint surface of the other joint element, at least one seal unit having at least one elastic sealing element, which extends in the circumferential direction around the entire circumference and the thickness (D) of which is greater than the thickness (D′) of an adjoining seal unit region and method for producing a seal arrangement.

The invention relates to the technical field of aircraft design, and discloses a hydrogen energy powered aircraft airworthiness analysis method and device based on MBSE, and the method comprises the steps: building a modeling architecture standard of a hydrogen energy aircraft power system; according to the modeling architecture standard of the target hydrogen energy aircraft power system, modeling each substructure of the target hydrogen energy aircraft power system to obtain a target hydrogen energy aircraft power system model composed of a plurality of substructure models; obtaining airworthiness regulations; each requirement in the airworthiness regulations is represented by using a physical structure to realize a specific function; and analyzing whether each substructure model of the target hydrogen energy aircraft power system meets each requirement in the airworthiness regulation or not to obtain an analysis result. According to the method, potential differences and conflicts between the target hydrogen energy aircraft power system and the existing airworthiness regulations can be visually and accurately identified, and the hydrogen energy power aircraft certification efficiency is improved.