9results about How to "Enable accurate simulation" patented technology

The invention belongs to the technical field of high-speed wind tunnel tests, and discloses a high-speed jet flow wind tunnel large-scale model velocity pressure simulation test method, which comprises the following steps: installing a model at an initial state position; calculating the total pressure P0 of the wind tunnel; the injection pressure P0p is calculated; starting a high-speed free jet wind tunnel; transforming the model to a second state; performing flow field parameter adjustment according to the model state, and performing static pressure matching fine adjustment; continuing to transform the model state until all data are collected; and closing the high-speed free jet wind tunnel. According to the high-speed jet flow wind tunnel large-scale model velocity pressure simulation test method, under the condition that the Mach number M is determined, the wind tunnel total pressure P0 and the injection pressure P0P are selected, accurate simulation of the Mach number M and the velocity pressure is achieved, and the method has engineering practical value.

This application discloses an FC network simulation method, apparatus, and electronic device based on a simulation platform, relating to the field of optical communication network simulation technology. The method includes: configuring simulation parameters and constructing an FC node model to generate FC packets. An FC switch model is constructed based on the simulation parameters, including a switch port model, a message distribution model, and a switch processor model. The switch port model includes cascaded ports, achieving accurate simulation of large-scale networks. FC packets are sent from the FC node model to the switch port model and then uploaded to the message distribution model via the switch port model. Based on the message distribution model, the FC packets are distributed to the switch processor model or cascaded ports according to packet field information. Based on the switch processor model or cascaded ports, the FC packets are cached and forwarded to the corresponding target node model based on priority, achieving a reliable distribution mechanism and improving the adaptability of the simulation.

The invention discloses a construction method of a sintered nano-silver constitutive model based on a nanoindentation test. The construction method comprises the following steps: preparing a sintered nano-silver sample; carrying out a nanoindentation experiment at different loading rates, and recording a load-displacement curve; establishing a unified creep-plasticity constitutive model; establishing a finite element model, embedding the constitutive model into the finite element model through a user-defined material subprogram, simulating the nanoindentation process at different loading rates, and recording a load-displacement curve; and comparing and analyzing the obtained load-displacement curve, and verifying the accuracy of the model. According to the method, by accurately describing the mechanical behaviors of the sintered nano-silver at different loading rates, the data blank of the mechanical properties of the sintered nano-silver at a high loading rate is filled, and the constitutive model capable of capturing the micro-mechanical behaviors of the sintered nano-silver is established; and an effective simulation means and theoretical support are provided for reliability evaluation of the electronic packaging material.

The invention relates to an intracranial aneurysm in-vitro amplification model blood circulation experiment system and method, and the system comprises an intracranial aneurysm in-vitro amplification model, a peristaltic pump, a liquid storage tank, a flow detection part and a pressure detection part, one end of the pump pipe is connected with an outlet of the liquid storage tank, the other end of the pump pipe is connected with an inlet of the intracranial aneurysm in-vitro amplification model, and an outlet of the intracranial aneurysm in-vitro amplification model is connected with an inlet of the liquid storage tank to form an extracorporeal circulation path. The experimental method comprises the steps of model and boundary condition zooming, blood flow simulation system construction, in-vitro patient specificity model and circulation path establishment, real-time monitoring and data acquisition. On the premise of meeting a flow similarity criterion, amplification construction of a patient specific aneurysm model, accurate simulation of physiological pulsating blood flow and systematic monitoring of key hemodynamic parameters can be realized; therefore, an in-vitro experiment platform which is more reliable and closer to the physiological state is provided for hemodynamic research of intracranial aneurysm.

The application discloses a kind of based on without wearing body sense motion capture technology's meta-universe digital twinborn system of playing water and method, it is related to computer vision technical field, the system includes module: without wearing action capture module, key point data processing and transmission module, multidimensional physical parameter engine, digital twinborn water area module, competitive rules and scoring module, digital person fitness ecosystem, virtual asset and economic system, LBS geographic anchoring system, environmental protection and cultural inheritance system, cross-chain intercommunication and security system.This based on without wearing body sense motion capture technology's meta-universe digital twinborn system of playing water and method, without wearing any equipment, greatly reduce user participation threshold, and through high-precision motion capture and physical simulation, provide close to real playing water experience, while multidimensional physical parameter engine realizes the accurate simulation of real fluid dynamics and rigid body dynamics, supports 12 kinds of hydrological environment.

The invention discloses a method for accurately simulating a laser light field in a multi-stage amplification system, which comprises the following steps of: measuring the intensity distribution and phase distribution of an initial signal light beam, and decomposing and reconstructing to obtain a light field of a reconstructed initial signal light beam; enabling the three pump light beams to enter three corresponding laser gain media from the end face in a collimation manner, and calculating to obtain the temperature distribution of each laser gain medium; giving reconstructed initial signal light beam power, starting to propagate in a light field form, and sequentially performing three times of amplification through three laser gain media; the three laser gain media are axially and equidistantly sliced, and a signal light beam in each slice serves as an input light field and is jointly modulated by a heat effect and a gain effect; and then the modulated light field is input to the next slice, and finally light field propagation of the laser beam in each laser gain medium is obtained. According to the invention, accurate simulation of the full-optical-path laser light field in the multi-stage amplification system can be realized.

The utility model relates to the technical field of agricultural equipment, in particular to a field irrigation simulation system which comprises a simulation mechanism used for simulating a field environment, a plurality of planting mechanisms used for planting crops and a plurality of real-time monitoring mechanisms used for monitoring the simulation mechanism and the planting mechanisms in real time. The irrigation mechanisms are used for irrigating water and / or chemicals, and the electrical control unit is used for overall control. According to the invention, a series of work such as accurate simulation of a field environment, batch planting of crops, environment detection, crop detection and custom selection of multiple irrigation modes can be realized, the automation and custom degree is high, the integration degree is high, the occupied space is small, the environment in the simulation mechanism is conveniently and automatically adjusted according to simulation requirements, and the simulation efficiency is improved. Meanwhile, automatic irrigation of water and chemicals can be achieved, the working intensity of researchers is greatly reduced, real-time monitoring of the environment and crops can be achieved through the real-time monitoring mechanism, the monitoring precision is high, and research work can be conveniently carried out.

The invention discloses a marine seat fatigue test system based on digital twinning and iterative learning control, and the system comprises a data collection and working condition simulation module which is used for obtaining marine environment, ship motion and seat mechanical response data, and generating a composite load spectrum simulating a real working condition; the marine seat digital twin model module constructs a virtual model corresponding to a physical seat, integrates structural dynamics, a material constitutive model and a damage accumulation model, and is used for mapping the real-time state of the physical seat; the iterative learning and intelligent optimization control module is used for receiving feedback of the digital twinborn model, correcting a test load spectrum on line, and allocating computing resources by using a dynamic priority scheduling model so as to accelerate the test; and the life prediction and evaluation module is used for probabilistically predicting the residual fatigue life of the seat. Through combination of the high-fidelity digital twinborn model and iterative learning control, precise simulation of complex and random ocean loads is realized, and a test environment is closer to a real working condition.

The application belongs to the technical field of robots, and discloses a milling force simulation and feed rate optimization method considering the pose-dependent dynamic effect of a robot. The application firstly performs modal testing at different poses in the milling area of the robot. Then, a dynamic model is established in the cutting area of the robot. At the same time, the workpiece surface is dynamically updated based on the dynamic sweeping track of the cutting edge and the workpiece model, so as to ensure the calculation accuracy of the instantaneous cutting thickness and the cutting force. Finally, based on the simulated accurate cutting force, the feed rate is segmented and adaptively planned under the constraint of the cutting force peak value, and the robot milling of the curved surface part and the machining error measurement experiment are carried out. The application realizes the effective improvement of the milling machining efficiency and accuracy of the curved surface part, and the cutting force in the machining process is more stable. The application has important significance for the improvement of the stability and machining performance in the robot machining process.