4results about How to "Optimize design parameters" patented technology

The application discloses a kind of rigid-flexible coupling two-way closed loop time domain dynamics calculation methods of underwater towing system, belong to the field of ocean engineering and underwater equipment technology;Method includes: establishing multi-coordinate system framework, constructs the six-degree-of-freedom rigid body motion equation of underwater vehicle, buoy and the partial differential dynamics equation of continuous elastic body of tow cable, is integrated into whole coupling model by displacement, velocity and force boundary condition.Set up two-way closed loop calculation framework: in each time step, first solve the boundary force of two rigid bodies based on the state of tow cable, and parallelly use four-order Runge-Kutta method to advance rigid body state simultaneously;Again, the updated rigid body position and velocity are used as forced boundary condition, and the tow cable is solved again using mixed difference method, to obtain the coordinated cable shape and tension distribution at the next time.This application realizes the dynamic synchronous update of rigid body motion and flexible cable deformation, and overcomes the phase lag and amplitude error of traditional weak coupling method.

This invention provides a reverse design method for wharf foundation piles based on multi-objective optimization, belonging to the field of civil engineering structural design technology. In the composite load space composed of vertical, horizontal loads, and bending moments, this invention uses a shape parameter vector containing dimensions and coupling coefficients to define and parameterize the target failure envelope. By performing numerical limit state analysis and fitting on design samples, the actual shape parameters are obtained. This is used to train a machine learning model that can quickly predict the shape of the corresponding envelope from the design parameters. Using the difference between the predicted shape and the target shape as the optimization objective, and combined with construction costs, the model is used to evaluate candidate designs. A multi-objective optimization algorithm is used iteratively to obtain a set of design parameters that optimally balance performance and cost. The selected design is verified through high-precision simulation. After confirming that its actual performance matches the target, the parameters and performance information are integrated into a standard digital file to directly drive automated construction.

The application discloses a shale oil horizontal well microseismic fracture parameter interpretation prediction method, and steps are as follows: step (1), microseismic fracture parameter interpretation prediction data preparation, determining the principle of parameter screening, and collecting the data of the screened parameters; step (2), data preprocessing; step (3), fracture parameter influence factor screening; step (4), regression prediction model construction; step (5), regression prediction model verification and evaluation; and step (6), application of the regression prediction model. The application has the following beneficial effects: 1. two modeling methods are used to establish a shale oil fracturing fracture parameter prediction model, and quantitative prediction of microseismic fracture parameters is realized; 2. high accuracy; 3. as a basis for shale oil horizontal well design, the application can optimize construction scale and design parameters, and also can provide a diagnosis method for fracturing construction, timely adjustment of construction parameters and improvement of fracturing reconstruction effect.

This utility model relates to the field of bearing runout torque detection technology, and more particularly to a composite bearing runout torque measuring fixture. A composite bearing runout torque measuring fixture includes: a mounting base, balance bars respectively disposed at both ends of the mounting base, a composite flange bearing disposed between the two balance bars, and a detection component disposed at the end of one of the balance bars. The composite flange bearing is disposed close to the mounting base, and the shaft hole of the mounting base, the outer diameter of the balance bars, and the inner hole of the composite flange bearing are coaxially arranged. This utility model provides a composite bearing runout torque measuring fixture with advantages such as accurate measurement results, small error, high measurement precision, good stability and robustness, convenient assembly and disassembly, and low cost.