44 results about "Spherical polyhedron" patented technology

A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas comprising at least first areas containing a plurality of first dimples and second areas containing a plurality of second dimples, the areas together forming a spherical polyhedron shape, the first dimples comprising spherical dimples having a first, spherical chord depth and the second dimples comprising truncated spherical dimples having a second, truncated chord depth, and the second dimples are of larger radius than the first dimples and have a truncated chord depth which is less than the spherical chord depth of the first dimples.

The invention discloses a method for compounding YAG single crystal nanometer powder, wherein routine inorganic salt is used as raw material to obtain a solid precursor material by a coprecipitation; supercritical water and sub-critical water are used as reaction media; the YAG single crystal nanometer powder material is compounded under the pressure of 8-30MPa and the temperature of 300 - 420 DEG C. The YAG nanometer powder material compounded by the method of the invention has the advantages that the phase is pure; the feature of the grain is a regular approximate spherical polyhedron; the distribution of the grain size is appropriate; foundation is established for preparing YAG transparent pottery laser material or device and promoting the study and development of novel laser material.

The invention discloses a ceramic reinforced steel-based wear-resisting composite and a preparation method thereof, and relates to the technical field of wear-resisting composites. The ceramic reinforced steel-based wear-resisting composite is prepared and obtained by pouring alloy steel molten metal to carry out casting infiltration on a ceramic prefabricated body through a casting infiltration method. The ceramic prefabricated body comprises, by weight percent, 40%-55% of spherical ceramic particles, 40%-55% of non-spherical polyhedral ceramic particles and 2%-5% of a binding agent, wherein0.5 mm<=the particle size of the spherical ceramic particles<the particle size of the non-spherical polyhedral ceramic particles<=1.5 mm. In the ceramic reinforced steel-based wear-resisting compositeand the preparation method thereof, the spherical ceramic particles cooperate with the non-spherical polyhedral ceramic particles, the particle sizes of the spherical ceramic particles and the non-spherical polyhedral ceramic particles are controlled, a unique toughening function is formed among the spherical ceramic particles, the non-spherical polyhedral ceramic particles and an alloy steel matrix, the prepared composite shows good impact resistance and wear resistance, and the functions of cutting and furrowing of grinding materials can be effectively resisted; and the preparation method is simple, and the prepared composite is suitable for being used for manufacturing hammer heads, liner plates, grinding rollers, millstones and other wear-resisting work components.

The invention discloses a method for constructing a spherical grid structure, which comprises the steps that an icosidodecahedron and a variant of the icosidodecahedron are constructed and combined; new hexagonal planar primitives are established; regular polygon configuration and subdivision are performed on the new hexagonal planar primitives; planar topology expansion primitives are formed; a Hanaor method is replaced by a planar primitive topology expansion and node chord plane angle sum mapping transformation method for performing spherical mapping transformation and constructing a spherical polyhedron structure; and the spherical grid structure is constructed based on the spherical polyhedron. Compared with the current Hanaor geodesic projection method for designing and constructing a spherical polyhedron grid structure, the spherical polyhedron constructed with the method is simplified obviously in hexagon configuration category, the number of node types and the number of rod length categories; relative relationship among nodes, polygonal surfaces and side lengths of the obtained spherical polyhedron grid structure is simpler and fixed; all polygons meet the planar no-distortion condition; and mounting and implementation are further facilitated.

The invention discloses a 30-rod spherical tension whole movable structure. A main structure is an outer frame in a tensegrity manner, and composed of 30 pressing rods, 90 inhaul cables and 60 hinge joints, each joint is connected with three inhaul cables and one pressing rod, each joint is equivalent, the structure has the good spatial symmetry, after the main structure exerts prestress, self balance can be achieved, stress can be kept free of losing without external force effect, a similarly-spherical polyhedron space is supported, according to the 30-rod spherical tension whole movable structure, through adjusting the length of a pulling and pressing part of the main structure, the opposite position of the ground projection of the whole center mass of the structure and the bottom contact ground can be changed, and the advancing motion of the structure is achieved.

The invention discloses a polyhedral hemispheroidal rapid assembling and disassembling modular house, which belongs to the technical field of buildings. The modular house is in the basic shape of a geometric dodecahedral hemispheroidal polyhedron, and can derive various series of products. The hemispheroidal polyhedron is composed of 12 same thin plate units; each thin plate unit is in the shape of an irregular quadrilateral, the two long edges of the quadrilateral are equal, and the two short edges of the quadrilateral are also equal; and the bottom surface of the formed polyhedron is in the shape of a regular octangle, the edge length of the regular octangle is equal to the length of the long edge of the quadrilateral, the diameter of the excircle of the regular octangle is 2.614 times as large as the edge length of the regular octangle, and the diameter of the incircle of the regular octangle is 2.415 times as large as the edge length of the regular octangle. A unique thin-shelled space of the house disclosed by the invention is high in structural strength, so that the house can resist loads in all directions in an optimum mode, and the house has a high space utilization rate; and the houses can be combined in various combination modes so as to form different architectural layout forms, so that the house can meet the complicated and rapidly changing function demands of the modern society.

The invention discloses a preparation method for phosphor powder of lanthanum, cerium, and terbium oxide, and is characterized in that the invention includes the following steps: confecting oxalic acid solution and taking the solution of lanthanum, cerium, and terbium oxide according to the proportion that the ratio of the mass of oxalic acid crystal to the mass of lanthanum, cerium, and terbium oxide equals to 1.2 to 1; adding distilled water or the composite liquid of the distilled water and ethanol into a reaction bottle is heated up to the preset value of 40 to 80 DEG C, and adding a surface additive and then adding acid to the reaction bottle to be stirred in the bottle; using two constant-pressure droppers respectively to add the solution of lanthanum, cerium, and terbium oxide and the oxalic acid solution with the mass proportion at the same time, and the solution of lanthanum, cerium, and terbium oxide and the oxalic acid solution can be dropped at the same time, and then stirring and ageing are went on to carry out; the sediment is separated from the mother liquid, and sucking filtration, washing and drying are carried out after the sediment mother liquid is cleared and cooled to the room temperature; putting the drying matter onto a resistance furnace and the temperature quickly raises to 920 to 980 DEG C and cooling the drying matter after the temperature is kept for 3 to 4 hours. As the surface additive and the acid are added in the crystal reaction process, the lanthanum, cerium, and terbium oxide in polyhedron that is similar to the sphericity is finally obtained.

The invention relates to a graph data Web3D visualization method and system and a medium, and the method comprises the steps: obtaining a preset number of visual nodes and visual edges from a preset graph database; calculating the pre-layout and the in-out degree of the graph data according to the visual nodes and the visual edges, and carrying out the configuration of the force-oriented graph; whether the number of the visual nodes is larger than a preset threshold value or not is judged, if yes, point fragment rendering is carried out on the visual nodes and the visual edges, and if not, spherical polyhedron instantiation rendering is carried out on the visual nodes and the visual edges. Through the method and the device, the problem of low efficiency in large-scale visualization of the graph data is solved. And high-efficiency visualization of large-scale graph data based on Web3D is realized.

An assembling type spherical cabin includes a bracket and panels, the bracket is in a hemispherical shape, and the panels are mounted on the bracket; the bracket includes a main bracket, the main bracket includes a plurality of keels and connecting pieces, wherein the keels are divided into short keels and long keels, and the ratio of the length of the short keels to the long keels is 1:1.618; theconnecting pieces includes five-claw connecting pieces and six-claw connecting pieces, and each of the five-claw connecting pieces and the six-claw connecting pieces includes a circular basal disc and a plurality of claw portions; and the claw portions centering on the center of the basal disc are evenly distributed on the peripheral surface of the basal disc, the claw portions are integrally formed with the basal disc and both are bent toward one side of the basal disc, and the bending angle is 18 degrees. According to the assembling type spherical cabin, the long keels and the short keels are connected through the five-claw connection pieces and the six-claw connection pieces to form an approximately spherical polyhedron, and greater elastic stress is not generated, so that the structural strength of the bracket of the spherical cabin is ensured; and meanwhile, the spherical cabin is assembled in a splicing mode to be easy to build, so that the effects of being easy to build and firm in structure are achieved at the same time.

Provided is a spherical polyhedron division structure of a golf ball where dimples are arranged to have a well-defined symmetry and a dimple pattern. In the spherical polyhedron division structure, wherein an arbitrary point on a surface of a spherical body constituting a golf ball is defined as a pole, a great circle dividing the spherical body into a northern hemisphere and a southern hemisphere with respect to the pole as a reference point is defined as an equator, the surface of the spherical body is divided into six areas formed by segments connecting the pole and points obtained by dividing the equator in units of 60°, each area is divided into spherical polygons formed by four spherical rectangles and two spherical triangles having sides with different lengths, and the spherical polygons arranged in different adjacent areas are symmetric with each other.

A panoramic sensing apparatus, comprising: a Fresnel lens system (110) and a light sensing device (120). The Fresnel lens system (110) comprises a composite Fresnel lens (111) in a shape of a frustum, at least one of an inner surface and an outer surface of a sidewall of the frustum being a tooth surface; at least two Fresnel units are distributed on said tooth surface. The light sensing device (120) is used for sensing light rays converged by the Fresnel lens system (110). As the composite Fresnel lens in the shape of a frustum is employed for sensing boundaries of a detection range, in the case where lens areas are the same as a whole, a larger detection range may be obtained, or light energy from each direction may be collected. Further, compared with a composite Fresnel refraction surface arranged on a spherical surface or on a spherical polyhedron, the composite Fresnel refraction surface which is arranged on a sidewall of a frustum involves lowered processing difficulty, and accordingly improved precision and defect-free rate.

In a golf ball having a surface divided by triangular concave sectors, an area of a surface of a sphere is divided into a plurality of areas forming spherical polyhedron and a plurality of dimples are formed for each of the plurality of areas. A triangular concave sector is formed by continuously forming a plurality of triangular concaves on each arc along great circles dividing the surface of the sphere into the plurality of areas. A planar shape of each of the plurality of triangular concaves is a triangle and the bases of the triangular concaves are arranged on the arc along the great circles. Peaks of adjacent triangular concaves are located at opposite sides with respect to the arc along the great circles.

In a golf ball having a surface divided by triangular concave sectors, an area of a surface of a sphere is divided into a plurality of areas forming spherical polyhedron and a plurality of dimples are formed for each of the plurality of areas. A triangular concave sector is formed by continuously forming a plurality of triangular concave on each arc along great circles dividing the surface of the sphere into the plurality of areas. A planar shape of each of the plurality of triangular concave is a triangle and the bases of the triangular concaves are arranged on the arc along the great circles. Peaks of adjacent triangular concaves are located at opposite sides with respect to the arc along the great circles.