7results about How to "Realize a realistic simulation" patented technology

A non-submerged cavitation-erosion synergistic damage simulation device, system and method belong to the field of hydraulic machinery working condition simulation, including a sediment jet channel and a cleaning fluid channel in its periphery; high-speed sand-containing fluid is introduced into the sediment jet channel to form a central high-speed jet impacting the sample surface, high-speed cleaning fluid is introduced into the cleaning fluid channel to form a peripheral low-speed water curtain surrounding the central high-speed jet after being ejected from the annular steady flow pipe, and the peripheral low-speed water curtain impacts the sample surface to form a local liquid phase confining pressure zone together with the central high-speed jet. The present application not only realizes the true simulation of the actual working condition under non-submerged conditions, but also can adjust the flow and pressure of the cleaning fluid to adjust the cavitation number and cavitation collapse intensity around the high-speed sand-containing jet without changing the atmospheric environmental pressure, and quickly adjust the simulation test parameters.

The invention discloses a device and method for maintaining a load position unchanged, the device comprises lower telescopic units, a box body, a rope, a side edge steering unit, a center switching mechanism, an upper telescopic unit and a fixing clamp, the fixing clamp used for clamping the rope is installed in the middle of the bottom end of the box body, and a plurality of lower telescopic units are installed at the bottom end of the box body; a plurality of lower telescopic units are installed on the top of the box body and distributed in an array mode, a center switching mechanism is installed in the middle of the box body, a plurality of upper telescopic units are installed on the top of the box body and distributed in an array mode, and side edge steering units are installed on the two sides of the top of the box body. The device is suitable for the transmission balance test on the single crystal furnace, and is also suitable for occasions where the upper end is continuously lifted, the load weight is increased and the position is not changed, the load does not need to be designed to be equal to a crystal silicon rod in length or equal to a furnace body in diameter, and space conflicts between the load and the furnace body and between the load and an auxiliary chamber are avoided.

The application discloses a flexible attached probe ground test active gravity unloading method, and belongs to the technical field of extraterrestrial exploration.The application realizes the method as follows: a flexible attached probe structure is constructed.The flexible attached probe comprises a body bearing plate, a buffer cylinder, a buffer support rigid body structure, and a flexible connecting structure.Motors are respectively connected with the mass center of the flexible rod and the mass center of the node, and the force required by each motor is determined according to a static balance equation.A flexible attached probe gravity unloading ground test system is established.The test system comprises a supporting device, a moving device and a control system.The force generated by the motor is transmitted to the gravity acting on the flexible attached probe through a suspension rope, a motor and a pulley set to complete the quantitative and accurate gravity unloading of the flexible attached probe ground test, and the real simulation of the dynamic characteristics of the flexible attached structure is realized.The application can realize low-frequency motion within a limited range and compensate for large deformation of the structure through multi-node gravity unloading.

The application discloses a kind of multi-loop power distribution cable overlapping state electromagnetic distribution characteristic simulation device and method, including power frequency power supply, phase modulation unit, flow unit, high-frequency signal coupling unit, multiple cable sections, multiple cable overlapping units, control unit and electromagnetic signal measurement unit, modular design is adopted, only by changing the position of cable connection plug can simultaneously simulate the overlapping state of multiple different cables, and different current loads and high-frequency signals can be applied simultaneously, the real simulation of cable group in cable channel can be realized.

The invention discloses a thin film transistor-liquid crystal display (TFT-LCD) structure weak link identification and reliability evaluation method based on multi-physics field simulation. The method comprises the following steps: S1, establishing a refined finite element model of a TFT-LCD display module; s2, defining material constitutive parameters for each layer of material in the finite element model, wherein the constitutive parameters comprise a temperature dynamic change model of a thermal expansion coefficient; s3, based on the finite element model and the material constitutive parameters, constructing a transient thermal-mechanical coupling simulation model, applying a transient temperature load to the simulation model and solving, and simulating and outputting temperature field space-time distribution data and structural stress field and strain field space-time distribution data; and S4, based on the stress field and strain field space-time distribution data, identifying a structural weak link in the TFT-LCD display module, and performing reliability risk assessment. According to the method, the thin film transistor-liquid crystal display (TFT-LCD) structure weak links can be accurately identified in the design stage, quantitative risk assessment is carried out, and a theoretical basis is provided for product optimization design.

The invention discloses an integral type composite material propeller torque testing device which comprises a bottom plate, a first side plate and a second side plate are fixedly connected to the two sides of the bottom plate respectively, a rotating torque shaft is installed between the first side plate and the second side plate, a plurality of check blocks are fixedly connected to the inner side of the second side plate, and the check blocks are matched with blades of a propeller; the force arm connecting rod is provided with a force loading rod, the force loading rod is axially perpendicular to the force arm connecting rod, the two ends of the force arm connecting rod are both connected with torque loading arms, and the ends, away from the force arm connecting rod, of the two torque loading arms are assembled with the two ends, extending out of the first side plate and the second side plate, of the rotating torque shaft correspondingly. And the two torque loading arms are respectively positioned on the outer sides of the two side plates. The integral type composite material propeller torque testing device is simple in structure, greatly saves equipment, labor and time cost, and solves the problem that a loading device cannot simulate stress of blades in water due to mutual shielding of the blades of an integral type propeller.