9 results about "Fracture Problem" patented technology

The application provides a fracturing reconstruction method and application for ultra-deep high-stress reservoirs, and mainly aims to solve the problems of high fracture pressure, small reconstruction volume and low fracture conductivity of high-stress reservoirs. Specifically, the application analyzes the fracturing problems of the current ultra-deep high-stress reservoirs, points out the limitations of the current technical measures, and proposes a new fracturing reconstruction technology for high-stress reservoirs. The technology takes the pre-composite pressure reduction process, forced fracture expansion process and fracture effective support process as the core, solves the problems of difficult fracturing, difficult fracture expansion and difficult support of high-stress reservoirs, and has good application effect.

The cylinder body structure comprises a cylinder body, lifting lugs are fixedly arranged at the two ends of the cylinder body respectively, and each lifting lug comprises a connecting part and two lifting parts integrally arranged at the two ends of the connecting part respectively; the connecting part is of an arc structure matched with the outer side face of the cylinder body, and the side face of the connecting part is integrally connected with the outer side face of the cylinder body. The two lifting parts are of L-shaped structures protruding out of the outer side face of the cylinder body. The lifting lug is of an integrated structure and is integrally connected with the cylinder body, so that the mechanical strength of the lifting lug can be improved, the connecting strength between the lifting lug and the cylinder body can be improved, the problem that the lifting lug is prone to breakage due to welding stress concentration is solved, the lifting lug is prevented from loosening, stable running of a vehicle is guaranteed, and driving is safer.

The application relates to a high-temperature alloy cross-piercing process interlayer defect prediction method and model, and particularly relates to a high-temperature alloy cross-piercing process interlayer defect prediction method and model, which comprises the following steps: establishing a high-temperature alloy cross-piercing finite element model, and performing high-temperature alloy cross-piercing finite element simulation; extracting all data of equivalent strain, temperature, strain rate, maximum shear strain, stress triaxiality, maximum shear stress, equivalent stress and maximum shear strain at the moment of deformation termination in the whole deformation process; calculating integral to determine damage value, average temperature and average strain rate; and performing high-temperature alloy compression-shear deformation experiments under the average temperature and average strain rate determined in the previous step. The application can predict engineering fracture problems in an actual deformation process through simple compression-shear hot simulation deformation experiments and finite element simulation technology, reduces the trial-and-error process in the actual production process, and saves manpower, material resources and financial resources.

The present application relates to material conveying equipment technical field, especially a kind of connecting sling and greenhouse lower hanging material trolley, comprising: track, the upper end of the track is provided with walking's stacker-reclaimer, the upper side of the left and right ends of the track is provided with connecting rod;Buffer component, rotationally connected in the outer end of connecting rod by fixed plate, the buffer component is used to buffer protection for connecting rod;Friction damping component, fixed at the end of buffer component away from fixed plate, the end of friction damping component away from buffer component is fixedly installed with fixed rod.When material trolley reciprocating operation generates high-frequency vibration, friction sliding occurs between friction ring piece and alloy steel sheet, vibration kinetic energy originally transmitted to net rack node is converted into heat energy and dissipated, stress amplitude at connecting node is greatly reduced, so that the initiation and expansion of fatigue crack at pinhole edge and weld are effectively inhibited, and the fracture problem caused by long-term reciprocating motion is solved.

The invention discloses a rapid optimization design method and device for inherent frequency, buckling pressure, maximum stress and other key indexes of an elastic strip, and belongs to the technical field of rail fasteners. Comprising the following steps: acquiring a plurality of key parameters of the elastic strip, including buckling end contact rigidity, tail end contact rigidity, buckling limb length, buckling end arc radius, tail end arc radius and side limb arch height; adjusting at least one key parameter based on the established quantitative relationship between the parameters and the inherent frequency, buckling pressure and maximum stress of the elastic strip; and calculating the adjusted key indexes, and optimizing the key indexes until a preset target is met. According to the method, the influence rule of key parameters on various performance indexes, namely collaborative optimization design of the missile strip, is defined, so that the inherent frequency of the missile strip can be remarkably improved to avoid a resonance area on the premise of keeping compatibility with an existing fastener system, meanwhile, the working stress is controlled below the fatigue limit, enough fastening force is ensured, and the service life of the missile strip is prolonged. And the resonance fatigue fracture problem of the elastic strip is fundamentally solved.

The invention discloses an input shaft fracture fault diagnosis method and device for a hybrid power coupler, mainly relates to the technical field of input shaft fracture fault diagnosis, and aims to solve the problem that a current software strategy in an existing scheme almost has no logic for the problem of input shaft fracture, or corresponding diagnosis logic cannot be used for diagnosis of input shaft fracture. And after the vehicle is broken after sale, the fault reason cannot be judged in a short time, and personnel need to arrive at the site for analysis. Comprising an initial position interval of input shaft fracture; acquiring a current operation mode and preset detection data of the hybrid vehicle; according to the initial position interval and the current operation mode, matching a corresponding diagnosis condition set; and determining a specific fracture interval according to the establishment condition of the preset detection data in the corresponding diagnosis condition set.

The utility model relates to the technical field of resin sand casting, in particular to a reinforcing structure of a pouring gate pipe for resin sand casting, which comprises a reinforcing body and a plastic buckle. And the reinforcing bodies are tightly attached to the pouring gate pipe and are bound at equal intervals by utilizing a plurality of plastic buckles. A certain supporting force is provided for the pouring gate pipe, the deformation and fracture problems of the pouring gate pipe are effectively avoided, and the practicability is higher.

This invention relates to the field of implantable pressure sensors, and discloses an implantable pressure sensor with a flexible corrugated diaphragm and its manufacturing method, comprising: a corrugated diaphragm, a pressure-sensing diaphragm, and a supporting base; the corrugated diaphragm is disposed on the upper side of the pressure-sensing diaphragm; the pressure-sensing diaphragm is disposed on the upper side of the supporting base, and a pressure-sensing cavity is provided between the two; the corrugated diaphragm includes an integrally formed corrugated portion and a flat portion; the corrugated portion is the pressure-sensing portion, used to sense external pressure and transmit the pressure to the flat portion; the cross-sectional curve of the corrugated portion is a periodic curve; the flat portion is a joint portion, which is attached to the upper side of the pressure-sensing diaphragm and transmits pressure thereto. The implantable pressure sensor with a flexible corrugated diaphragm effectively alleviates the fatigue fracture problem caused by stress concentration by attaching a flexible corrugated diaphragm to the upper side of the pressure-sensing diaphragm. The special structure of the corrugated diaphragm enables a more uniform stress distribution, thereby extending the service life of the sensor.

The invention belongs to the field of copper alloys, and discloses a high-strength, high-conductivity and high-plasticity CuCoNiSi series alloy of which the conductivity is not lower than 50% IACS, the tensile strength is not lower than 700 MPa, and the product of strength and ductility is not lower than 9.00 GPa.%. The invention also discloses a preparation method and application of the alloy, and the preparation method comprises the following steps: firstly preparing a CuCoNiSi alloy ingot, and then sequentially carrying out homogenization treatment, hot rolling treatment, solution treatment, first cold rolling treatment, first aging treatment, second cold rolling treatment, second aging treatment, third cold rolling treatment and third aging treatment. And the CuCoNiSi series alloy is obtained. Through cooperative control of microalloying component design and a multi-stage deformation-graded aging process, a stable multi-scale precipitation structure is constructed in the Cu-Ni-Co-Si alloy, so that a nano-scale precipitation phase, a micron-scale precipitation phase and a deformation substructure have a synergistic effect, the strength and the electric conductivity are improved, and meanwhile, the mechanical property of the Cu-Ni-Co-Si alloy is improved. And the problems of strain localization and early-stage fracture are effectively relieved, so that synergism and unification of high strength, high conductivity and high plasticity are realized.