8 results about "Solid shell" patented technology

The invention discloses a three-grid system construction method for pretreatment of variable-density grids of a solid shell of a large shell component, and belongs to the field of numerical simulation of a plastic forming process. The method comprises the following steps: generating a high-resolution structured hexahedron storage grid SM for storing simulation historical data according to geometric parameters of a target thin-wall rotary body component; performing interval condensation on units in the storage grid SM to generate a background grid BM which shares nodes with the storage grid SM and is consistent with the storage grid SM in topology; dynamically marking the encryption attribute of the to-be-encrypted unit in the background grid BM; and calling a preset multi-level encryption template based on the encryption attribute marked in the background grid BM, combining nodes and units of the storage grid SM and the background grid BM on the premise of not generating additional nodes, and quickly generating a local encryption calculation grid CM sharing nodes with the storage grid SM and the background grid BM. According to the method, the problems of low grid calculation quality and difficulty in grid density control in the current multi-grid method are solved.

The invention belongs to the technical field of 3D printing, and provides a model hollow filler structure generation method and device, electronic equipment and a storage medium. The method comprises the following steps: traversing all triangular meshes of a flat-mouth cavity slot model; rotating the flat mouth cavity type model and enabling a flat mouth plane to be parallel to a zero plane; obtaining an inner contour plane area at the plain end; dividing the plane area of the plain end inner contour into different polygonal blocks by using a polygonal mesh array; taking each polygonal block as a bottom, and lifting each end point of the polygon upwards by a height Hij to determine the top surface of each hollow cylinder so as to generate each hollow polygonal cylinder structure; filling the part, except the hollow structure, of the model into an entity; and storing the model data. The method is used for generating a polygonal hollowed-out filling body structure for a model or a flat-mouth cavity groove type model after flat-bottom solid shelling treatment, the transverse supporting stability can be enhanced, and additional supporting at the suspended position of the polygonal hollowed-out top can be omitted.

The invention provides a plate spinning solid shell unit modeling and simulation visualization method based on ABAQUS, and belongs to the field of spinning forming numerical simulation. The method comprises the following steps of: constructing a calculation module by using a Fortran language and packaging the calculation module into a VUEL subprogram which can be called by ABAQUS; a subprogram VUSDFLD used for redefining variables on the integration points is written in the Fortran language; a three-dimensional finite element model of plate spinning is established in the ABAQUS; and calling an ABAQUS / Explicit solver and a subprogram to perform plate spinning simulation to obtain an ODB result file, constructing a result file reconstruction tool based on a Python secondary development technology of the ABAQUS, extracting node data of a calculation component and unit integral point data of a storage component, and creating a new ODB file for visualization. The method solves the problem that the simulation result of the user-defined entity shell unit (such as VUEL) in the ABAQUS cannot be directly written into the ODB file, so that post-processing visualization is difficult.

The utility model relates to sensor technical field and disclose a sensor probe with protection structure, including device main part: the bottom of device main part is provided with sensor probe body, the outside of sensor probe body is provided with protection shell, the bottom of device main part is set up to have installed groove, the protection shell is installed in the inside of installed groove, the protection shell adopts high -strength plastic and is made, both sides of device main part are all fixed with L type board. The sensor probe with protection structure, through setting up protection shell, utilize the protection shell solid shell to protect sensor probe body, avoid sensor probe body and damage because accidental collision or impact, to guarantee its long -term stable, reliable work, improved the service life of sensor probe body, and through setting up installed groove and fixed mechanism, it is convenient to install and dismantle to protection shell to the sensor probe body is overhauled or replaced to the sensor probe body is overhauled or replaced.

The invention discloses a time-frequency electromagnetic method ground monitoring data acquisition device, which comprises a power supply unit, a shell, a plurality of transmitting electrode pairs arranged at the edge of one side of the lower surface of the shell, a plurality of receiving electrode pairs arranged at the edge of the other side of the lower surface of the transmitting unit, and a transmitting unit arranged in the shell, the excitation module is used for generating an excitation current signal according to a preset time-frequency coding sequence and injecting the excitation current signal into the ground through a transmitting electrode pair; the receiving unit is arranged in the shell and is used for collecting an electromagnetic response signal generated by the ground through a receiving electrode pair and conditioning and digitizing the electromagnetic response signal; the main control and processing unit is arranged in the shell and is electrically connected with the transmitting unit and the receiving unit respectively; and a synchronization unit. The functions of a plurality of traditional discrete devices are integrated in a firm shell, so that the field layout process is simplified, and the reliability and portability of the system are improved.

This invention relates to the field of continuous casting technology for steel, and discloses an electromagnetic stirring device and method for the solidification end of continuous casting. The device includes: multiple C-shaped iron cores; a continuously cast billet enters a secondary cooling zone from a crystallizer; the secondary cooling zone has multiple support rollers arranged in an arc shape; the support rollers support and guide the continuously cast billet, causing it to bend on the rollers to form an inner arc side and an outer arc side; the continuously cast billet includes a solid shell and a liquid phase cavity located inside the solid shell; the liquid phase cavity cools and pulls the billet within the secondary cooling zone; the tail end of the liquid phase cavity forms the solidification end; the multiple C-shaped iron cores are spaced apart along the length of the continuously cast billet, with the C-shaped iron cores close to the outer arc side of the billet; coils are wound on the C-shaped iron cores for passing alternating current and generating a linear electromagnetic force along the pulling direction of the liquid phase cavity within the continuously cast billet. This method can promote the movement and accumulation of equiaxed grains towards the solidification end, inhibit the aggregation of solute-rich liquid phase at the center of the continuously cast billet, and thus effectively improve center segregation.

This invention discloses a high-speed data transmission fluoroplastic solid double-insulated core wire with a shell and its manufacturing process. It includes two parallel silver-plated conductors, each covered by a first FEP insulation layer. The two silver-plated conductors covered by the first FEP insulation layer are then covered by a second FEP insulation layer. This invention uses fluoroplastic with a lower dielectric constant as the double-insulation material. Under the same electrical performance requirements, the finished wire diameter is reduced by approximately one-fifth compared to traditional PE insulated core wires, significantly saving space in high-density data center cabinets and improving installation flexibility and heat dissipation. The two primary insulated core wires are tightly integrated with the secondary insulation shell, resulting in a robust overall structure. During bending, twisting, cabling, and subsequent processing, problems such as core wire deformation, structural asymmetry, positional shift, and loose insulation layers are less likely to occur, ensuring stable key electrical parameters such as impedance and return loss.

The invention relates to the technical field of pressure detection, and provides a capacitive pressure sensor which comprises a shell, a sensitive core structure and a stress release structure. When gas to be detected is introduced into the detection cavity, pressure firstly acts on the stress release structure, and most impact mechanical stress can be transferred and dispersed to the firm shell; under the protection, the sensitive core body structure only senses stable effective pressure, so that pressure difference between the sensitive core body structure and the vacuum cavity is generated, accurate deformation of the sensitive core body structure is triggered, the capacitance is changed, and finally the pressure value is accurately measured by detecting the capacitance variation. Therefore, mechanical stress directly impacting the sensitive core body structure is effectively buffered and dispersed through the stress release structure, the defect that the sensitive core body is prone to being damaged due to overload is fundamentally overcome, the service life of the sensor under the working conditions of high pressure and violent pressure fluctuation is remarkably prolonged, the measurement reliability of the sensor under the working conditions of high pressure and violent pressure fluctuation is remarkably improved, and meanwhile external stress interference is reduced. And the stability and the precision of long-term measurement are also ensured.