6results about How to "Improve the design level" patented technology

This invention relates to a brake disc optimization method, device, and medium based on four-factor constraints. The method includes: obtaining the mass of a target brake disc; establishing a model with an undercarriage structure based on the parameters of the target brake disc, and obtaining the maximum limiting temperature of each part; performing optimization design without exceeding the original mass to obtain the optimized brake disc; performing CFD steady-state simulation to calculate the steady-state cooling pump air ratio; when the maximum temperature is lower than the maximum limiting temperature, determining whether it meets the preset optimization target based on the steady-state cooling pump air ratio; performing CFD transient simulation analysis on candidate brake discs to calculate the transient cooling pump air ratio; when the maximum temperature is lower than the maximum limiting temperature, determining whether it meets the optimization target based on the transient cooling pump air ratio; if so, the target brake disc is the preferred brake disc. Compared with the prior art, this invention solves or partially solves the problem that existing brake disc optimization methods lack constraints during the optimization process, leading to unsatisfactory optimization.

The invention discloses an ultrahigh pressure air valve component unit performance test device and method, and the device comprises an ultrahigh pressure compression closed circulation system which comprises an ultrahigh pressure air cylinder, a plunger and an ultrahigh pressure air valve test component, and ultrahigh pressure air enters an air cylinder compression cavity through an air inlet pipeline along an air inlet channel; ultrahigh-pressure gas in the gas cavity compression cavity is exhausted to the ultrahigh-pressure pressure relief device through an exhaust channel, the ultrahigh-pressure pressure relief device is connected to the gas inlet pipeline through a bypass pipeline, and a cyclotron is arranged on the gas inlet pipeline, prepares the ultrahigh-pressure gas into radioactive gas and introduces the radioactive gas into the ultrahigh-pressure cylinder; a scintillation detector array is arranged outside the ultrahigh-pressure cylinder, covers the whole ultrahigh-pressure cylinder and is used for capturing the flowing range of radioactive gas in the ultrahigh-pressure cylinder. The device has the functions of accurate ultrahigh-pressure gas loading, adjustable cycle frequency, working performance monitoring and the like, so that effective experimental means and technical guarantee are provided for localization of key parts.

This disclosure relates to a full-process processing method for fiber optic composite ground wires, including: a design stage where a design database is established, the structure and processing technology of the fiber optic composite ground wire are determined based on the database, and auxiliary optimization design is performed; a manufacturing stage where multiple attribute parameters of the fiber optic composite ground wire are monitored to improve quality; an operation stage where the fiber optic composite ground wire is monitored under extreme low-temperature conditions to obtain initial data; the original health indicators are input into a pre-trained health and status recognition model to obtain the status recognition results of the fiber optic composite ground wire; and an early warning is issued based on the status recognition results. The technical solution of this application improves design quality, provides early warning during the operation stage, and is beneficial for extending the lifespan of the fiber optic composite ground wire.

The present application relates to a design method of the vibration isolation parameters of a shield pump of a high-speed train traction converter cooling system, and belongs to the field of rail vehicle vibration isolation. The present application builds a simulation model for optimizing the vibration isolation stiffness and damping parameters of the shield pump of the high-speed train traction converter cooling system by coupling the influence of the under-vehicle equipment, takes track high-low irregularities as the input excitation, and takes the minimum root mean square value and vibration intensity of the vertical and nodding vibration acceleration of the shield pump of the traction converter cooling system as the design target, to optimize the design and obtain the vibration isolation stiffness and damping of the shield pump of the traction converter cooling system. The simulation verification by SIMPACK shows that the method can obtain accurate and reliable design values of the vibration isolation stiffness and damping parameters of the shield pump, and provides a reliable design method for the design of the vibration isolation parameters of the shield pump of the high-speed train traction converter cooling system. The method can improve the product design level and quality, the operation reliability of the high-speed train traction converter cooling system, and reduce the product design and test cost.

The invention discloses a dynamic optimization design method for the width of a protection coal pillar of a main roadway of a rock burst mine. The method comprises the following steps: step 1, determining the initial design width B0 of the protection coal pillar; 2, active weakening treatment is conducted on the protection coal pillar top plate corresponding to the width B0, and the actually-measured maximum stress concentration coefficient Kmeas is obtained; 3, the coefficient Kmeas is compared with a preset critical value [K], and whether the width of the coal pillar can be optimized or not is judged; 4, reducing the width according to a preset amplitude delta B during optimization to obtain a trial design width Btry, repeating the steps 2-3, and performing iterative verification until the minimum safety coal pillar width Bmin meeting the design condition is determined; and step 5, storing the minimum safety width Bmin and associated parameters into a database, and guiding subsequent similar condition design. The dynamic optimization design method provided by the invention solves the problems that the traditional design is static and rigid, the resource waste is serious, the treatment efficiency is not fed back to the design, and the traditional design is difficult to adapt to complex conditions.

The application provides a ship frequency equipment failure mechanism analysis system and method, comprising: an electromagnetic environment simulation module, used for simulating and generating a complex electromagnetic environment signal containing a working signal and an interference signal; an electromagnetic sensitive module model library, containing an amplifier model, a filter model and a mixer model at a signal level or a behavior level; an electromagnetic stress simulation module, configured to input the complex electromagnetic environment signal as an electromagnetic stress into a target electromagnetic sensitive module model, drive the model to run and obtain an output response signal of the target electromagnetic sensitive module; and a failure mechanism analysis module, configured to determine an action mechanism of the electromagnetic stress on the target electromagnetic sensitive module by analyzing distortion characteristics of the output signal, and associate the action mechanism to a system-level failure mode of the frequency equipment. The application can effectively reduce test cost, shorten analysis period, reveal the electromagnetic failure mechanism of the equipment, and provide technical support for reliability evaluation and electromagnetic interference resistance design of the ship frequency equipment.