8 results about "Engineering design process" patented technology

The invention belongs to the technical field of integrated photoelectronics, and particularly relates to an integrated optical device segmentation design method based on heuristic iteration and simulation feedback, which comprises the following steps: S1, physical analysis and heuristic initial width selection; s2, constructing a model and simulation feedback; s3, carrying out iterative manual adjustment and refinement; and S4, convergence and final design determination. Compared with a full-automatic violent optimization algorithm, the method has the advantages that the parameter space needing to be explored is greatly reduced through human heuristic selection, so that the calculation time and cost are remarkably reduced. And through iteration refinement based on physical insight, the method can systematically approach to an optimal solution, the randomness of pure manual design and the roughness of simple rule division are avoided, and the finally designed device is excellent in performance. The invention provides a set of engineering design process which is clear in structure and high in operability, so that the design process of a complex device is standardized and is easy to master and apply by engineers.

The present disclosure relates to an engineering design process data quality evaluation method and device, and relates to the technical field of computers. The method comprises: obtaining target engineering design process data; structurally processing the target engineering design process data to determine a plurality of fields; determining a plurality of evaluation parameters according to the fields; determining evaluation information of the target engineering design process data according to the evaluation parameters; and outputting the evaluation information. The present disclosure can deeply mine and model the proofreading opinion data in the background, evaluate the quality of each process, and achieve more objective evaluation.

The invention discloses a topological optimization rapid design method for an air-cooled turbine blade, and belongs to the technical field of aero-engine and gas turbine design. According to the method, a topological optimization mathematical model considering the coupling effect of an aerodynamic load, a temperature load and a centrifugal load is established, and automatic optimization of blade inner cavity material distribution is realized through sensitivity analysis and pseudo-density updating by taking blade skin flexibility minimization as a target. On the basis, a turbine blade engineering design process based on topological optimization is provided, and a similar double-layer-wall multi-layer composite low-inertia blade structure configuration is formed. According to the method, the problems of multidisciplinary serial connection, experience dependence, stress concentration and low cooling efficiency in traditional blade design are solved, and collaborative improvement of the blade structure efficiency and the cooling performance is achieved.

The application provides a kind of anti-rotation plate design parameter sensitivity analysis method and system, method includes: selecting the geometric parameter of k anti-rotation plate as test factor, and based on central composite design test method generates the code table containing multiple anti-rotation plate geometric parameter combination;Based on the code table, generate multiple anti-rotation plate sealing structure, and carry out numerical simulation of steady-state rotor static eccentricity to each anti-rotation plate sealing structure under the same working condition, to obtain the index value of each anti-rotation plate sealing structure stability evaluation index;Based on stability evaluation index analysis anti-rotation plate parameter sensitivity to anti-rotation plate design, and determine the preferred anti-rotation plate design parameter combination according to the analysis result.The application is mainly based on test design DOE method to analyze the sensitivity of key geometric parameters and then obtain the preferred anti-rotation plate design parameter combination, which helps turbine designers to quickly and efficiently meet the anti-rotation plate design requirements in the engineering design process.

The present invention discloses a GIS product standardization management system and method, which is integrated into a PLM data management platform, and integrates product standardization management behavior of engineering design with material and data creation behavior on the same platform; utilizes a standardization library management module to realize the establishment and storage of various types of forms in the standard library; the engineering design module retrieves the forms of the standard library and realizes the creation of a product BOM structure tree, thereby improving design efficiency and standardization; the standardization review module reviews the modules to be included in the engineering design process, thereby realizing the restriction of the standard library on engineering design; the standardization activity module realizes the continuous iteration of the standard library; the standardization KPI indicator module outputs standardization indicators after dynamic analysis based on the forms in the standard library and the engineering project BOM; can effectively evaluate the standardization management level of GIS products and the effect of standardization activities, and realizes the strong association, strong constraint and continuous interaction between various standardization activities and engineering design behaviors on the same platform.

The invention discloses a synchronous management method for a WBS and PBS semi-decoupling water conservancy and hydropower project based on a PPO2 algorithm. The method comprises the following steps: establishing a five-layer state space model; defining a composite action space; the hierarchical Actor-Critic decision network based on the PPO2 is constructed; designing a multi-target reward function; pPO2 training optimization is implemented; the dynamic semi-decoupling of the WBS-PBS is realized; and executing online decision making and learning. According to the method, the training stability and high efficiency of the PPO2 algorithm are utilized, intelligent management of the hydraulic engineering design process is achieved, the change propagation influence is reduced through a semi-decoupling mechanism, the adaptability of a project to uncertainty is remarkably improved, resource utilization is optimized, and the design quality and efficiency are improved.

The invention discloses a bending, twisting and buckling bearing method for duplex stainless steel cold-bent edge-rolled angle steel, and relates to the technical field of metal structure materials. The method comprises the four steps of material mechanical property parameter acquisition, bending-torsion coupling calculation model establishment, bending-torsion combination test verification and engineering design method output. Accurate parameters are acquired by testing material microstructures and mechanical properties under different cold bending processes; deriving a bending-torsion coupling equation based on an energy method, and establishing a calculation model in combination with a finite element method; designing a standardized bending torsion loading test device, and verifying and correcting the model; load conditions are classified, a design formula is simplified, and an engineering design process is formulated. According to the method, the problems of large calculation error and poor practicability in the prior art are solved, the calculation error of the bending-torsion-buckling critical load is reduced to 5% or below, the blank of design specifications is filled up, the method can be applied to the fields of buildings, oceans, chemical engineering and the like, material waste is reduced by 10%-15%, and remarkable technical, economic and social benefits are achieved.

The present invention provides a method and system for designing an anti-rotation plate. The method includes: constructing a shaft seal model and determining the length and installation position of the anti-rotation plate based on the shaft seal model and axial displacement; obtaining the swirl ratio and rotor tangential gas flow excitation force of the shaft seal with the anti-rotation plate through numerical simulation of steady-state rotor static eccentricity; adjusting the number of rows and installation position of the anti-rotation plate, and controlling the swirl ratio within a certain range in the shaft seal section through limited iteration; generating a coding table based on the central composite design experimental method; analyzing the rotor tangential gas flow excitation force corresponding to each anti-rotation plate structure for various anti-rotation plate structures generated based on the coding table, and obtaining the anti-rotation plate structure with the best stability. The present invention can effectively improve the dynamic characteristics of the shaft seal rotor and meet the design of the anti-rotation plate structure for rapidly and efficiently improving the multi-stage shaft seal stability enhancement and vibration suppression performance during the engineering design process.