Abstract: A circular pipe filament winding process simulation method includes: according to the geometric parameter of the circular pipe and the current pseudo dome parameter, constructing the stepped shaft circular pipe model; according to the winding parameter, calculating the initial center rotation angle for filament winding; according to the initial center rotation angle and the given deviation rotation angle, calculating the theoretical center rotation angle; according to the theoretical center rotation angle, determining the theoretical slip coefficient within the given slip coefficient range; determining whether the slip coefficient of the end point of the current stepped shaft circular pipe model is less than the current theoretical slip coefficient; if so, performing the simulation of the circular pipe filament winding process, and obtaining the trajectory according to the current theoretical slip coefficient; and if not, modifying the current pseudo dome parameter, and returning steps of constructing the ste

Abstract: A circular pipe filament winding process simulation method includes: according to the geometric parameter of the circular pipe and the current pseudo dome parameter, constructing the stepped shaft circular pipe model; according to the winding parameter, calculating the initial center rotation angle for filament winding; according to the initial center rotation angle and the given deviation rotation angle, calculating the theoretical center rotation angle; according to the theoretical center rotation angle, determining the theoretical slip coefficient within the given slip coefficient range; determining whether the slip coefficient of the end point of the current stepped shaft circular pipe model is less than the current theoretical slip coefficient; if so, performing the simulation of the circular pipe filament winding process, and obtaining the trajectory according to the current theoretical slip coefficient; and if not, modifying the current pseudo dome parameter, and returning steps of constructing the ste

Abstract: The present disclosure relates to a transition method and system from helical winding to hoop winding of composite fibers. The method includes: setting a slip coefficient, and performing iterative calculation forward from an iteration starting point according to an equation set of a winding angle and a center angle of rotation to obtain a winding angle at an iteration termination point; and if the winding angle at the iteration termination point is greater than a first preset angle, adjusting the slip coefficient corresponding to a cylinder body according to the first preset angle, extending a length of a helical winding transition section to a front equator, and starting the hoop winding at the front equator at the first preset angle to complete planning of the helical winding transition section.

Abstract: A vector search method includes: obtaining a query object; obtaining, by querying a first index, N vector identifiers corresponding to the query object, where the first index is stored in a memory, N is a positive integer, the N vector identifiers include a plurality of first vector identifiers, and the first vector identifier is a vector identifier that is not determined to be recalled; determining, by querying index entries that are in a second index, second vector identifiers corresponding to the plurality of first vector identifiers, the second index is stored in a persistent storage medium, and a compression ratio of a vector in the first index is greater than that of a vector in the second index; and obtaining a query result of the query object based on the second vector identifiers.

Abstract: The present invention provides an energy-storing temperature control material, and belongs to the technical field of temperature control materials. In the energy-storing temperature control material provided in the present invention, the organic synthetic fiber based phase-change material has a three-dimensional dispersion effect, and can form a network constraint for remaining phase-change materials to reinforce mechanical properties of the materials, thereby fixing shapes of the materials and avoiding a liquid-crystal phase separation phenomenon in the phase-change process. The phase-change energy storage agent can absorb and release the heat by means of solid-liquid phase conversion of the material, to achieve the temperature control effect; and the phase-change temperature regulator can regulate a phase-change temperature range of the phase-change material, to make the energy-storing temperature control material suitable for climatic features of northern China.

Abstract: A device and a method for controlling a size of a molten pool in a wire and arc additive manufacturing process are provided. The device includes additive manufacturing equipment, a connecting device, bilateral gas flow devices and a CCD camera. By adjusting the connecting device, the bilateral gas flow devices and a welding gun have proper relative positions. The CCD camera is clamped on a rear side of the welding gun and matched with a proper optical filter to detect size information of the molten pool. In the additive manufacturing process, the bilateral gas flow devices and the welding gun keep moving synchronously, welding wires are conveyed to a designed position of a deposited layer by a wire feeding device, and bilateral gas flows can directly and synchronously act on a melting region. A flow controller is adjusted in real time according to the size of the molten pool.

Abstract: The present disclosure relates to a transition method and system from helical winding to hoop winding of composite fibers. The method includes: setting a slip coefficient, and performing iterative calculation forward from an iteration starting point according to an equation set of a winding angle and a center angle of rotation to obtain a winding angle at an iteration termination point; and if the winding angle at the iteration termination point is greater than a first preset angle, adjusting the slip coefficient corresponding to a cylinder body according to the first preset angle, extending a length of a helical winding transition section to a front equator, and starting the hoop winding at the front equator at the first preset angle to complete planning of the helical winding transition section.

Abstract: The present invention provides an energy-storing temperature control material, and belongs to the technical field of temperature control materials. In the energy-storing temperature control material provided in the present invention, the organic synthetic fiber based phase-change material has a three-dimensional dispersion effect, and can form a network constraint for remaining phase-change materials to reinforce mechanical properties of the materials, thereby fixing shapes of the materials and avoiding a liquid-crystal phase separation phenomenon in the phase-change process. The phase-change energy storage agent can absorb and release the heat by means of solid-liquid phase conversion of the material, to achieve the temperature control effect; and the phase-change temperature regulator can regulate a phase-change temperature range of the phase-change material, to make the energy-storing temperature control material suitable for climatic features of northern China.

Abstract: Provided is a silicate article comprising SiO2, Al2O3, Na2O, K2O, MgO and ZrO2, wherein the content of Al2O3 is 15-28 parts by weight, the content of Na2O is 13-25 parts by weight, the content of K2O is 6-15 parts by weight, the content of MgO is 7-16 parts by weight, and the content of ZrO2 is 0.1-5 parts by weight, relative to 100 parts by weight of SiO2; and M is 5-13, as calculated by the following formula: M=P1*wt (Na2O)+P2*wt (K2O)+P3*wt (MgO)+P4*wt (ZrO2)?P5*wt (Al2O3)*wt (Al2O3). In the formula, P1 has a value of 0.53, P2 has a value of 0.153, P3 has a value of 0.36, P4 has a value of 0.67, and P5 has a value of 0.018.

Abstract: The invention discloses a composition for preparing glass, a glass article and a use thereof, and a glass article made from the composition. The glass article is preferably a glass substrate made from a composition with an M value of from about 1 to about 10 as calculated by the empirical equation: M=0.13×wt (B2O3)×wt (B2O3)+0.42×wt (CaO)+0.55×wt (MgO)+0.75×wt (SrO)?0.05×wt (Al2O3)×wt (Al2O3). A use of the glass article (especially the glass substrate) for manufacturing a display device is disclosed herein, wherein the glass article has better properties, such as lowered content of solid inclusions and gas inclusions, lowered thickness range and lowered warpage.

Abstract: The invention discloses a composition for preparing glass, a glass article and a use thereof, and a glass article made from the composition. The glass article is preferably a glass substrate made from a composition with an M value of from about 1 to about 10 as calculated by the empirical equation: M=0.13×wt (B2O3)×wt (B2O3)+0.42×wt (CaO)+0.55×wt (MgO)+0.75×wt (SrO)?0.05×wt (Al2O3)×wt (Al2O3). A use of the glass article (especially the glass substrate) for manufacturing a display device is disclosed herein, wherein the glass article has better properties, such as lowered content of solid inclusions and gas inclusions, lowered thickness range and lowered warpage.

Abstract: Provided is a silicate article comprising SiO2, Al2O3, Na2O, K2O, MgO and ZrO2, wherein the content of Al2O3 is 15-28 parts by weight, the content of Na2O is 13-25 parts by weight, the content of K2O is 6-15 parts by weight, the content of MgO is 7-16 parts by weight, and the content of ZrO2 is 0.1-5 parts by weight, relative to 100 parts by weight of SiO2; and M is 5-13, as calculated by the following formula: M=P1*wt (Na2O)+P2*wt (K2O)+P3*wt (MgO)+P4*wt (ZrO2)?P5*wt (Al2O3)*wt (Al2O3). In the formula, P1 has a value of 0.53, P2 has a value of 0.153, P3 has a value of 0.36, P4 has a value of 0.67, and P5 has a value of 0.018.