3results about How to "Guaranteed stress" patented technology

This invention relates to the field of electronic packaging technology and discloses a multi-physics coupled packaging simulation method, including S1, macroscopic equivalent model construction, which establishes a macroscopic packaging model containing multi-physics loads and performs equivalent processing on the microscopic complex structure to efficiently obtain the overall temperature, displacement, and stress distribution; S2, key region identification, which combines macroscopic equivalent modeling with microscopic fine modeling and establishes a macro-micro bidirectional coupling mechanism to enable the macroscopic structural response and microscopic local behavior to be solved collaboratively under the same analysis framework; at the same time, combined with an adaptive iteration strategy, the microscopic model is dynamically introduced only in key high-risk areas to avoid the degree-of-freedom explosion problem caused by global fine modeling, thereby significantly reducing the overall computational scale while ensuring the accuracy of stress and strain prediction in key areas, effectively solving the problem of "difficulty in balancing accuracy and efficiency" in the prior art, and achieving a unity of high efficiency and high accuracy in multi-scale simulation.

This invention discloses a system and method for monitoring the stress and frequency of main beams and piers during the construction of long-span bridges, belonging to the field of bridge stress and frequency monitoring technology. It includes a strain data acquisition module, a communication module, and a PC server. During the main beam construction process, this invention utilizes the stress data acquisition module to perform stress tests on completed segments. Combined with the current construction stage, a bridge calculation model is used to make an overall evaluation of the stress data, thereby enabling timely adjustment measures to ensure that the stress of the main beam and piers remains within allowable ranges.

This invention discloses a method for the overall hoisting construction of large-span spatial steel space frames using finite element analysis and BIM technology. This method first verifies the overall stress performance of the space frame through finite element analysis, determining the optimal hoisting points and wire rope parameters. Then, it uses BIM to assist in determining the ground assembly position of the space frame, selecting the appropriate crane type, determining the optimal crane hoisting position, and simulating the hoisting route to determine the optimal hoisting trajectory. By integrating a resistance strain monitoring system into the BIM software, the stress values ​​of each major load-bearing member of the space frame model during assembly and hoisting are directly displayed in the model. Corresponding stress thresholds are set according to specifications, allowing for intuitive monitoring of stress changes in each major load-bearing member. This ensures that any abnormalities are identified and their causes are determined immediately, enabling continuous monitoring throughout the entire space frame installation process and ensuring overall safety during hoisting.