66 results about "Vectran" patented technology

The invention discloses a carbon fiber fuselage structure layering optimization design method and system, and relates to the technical field of material structure intelligent design, and the method comprises the steps: importing a three-dimensional CAD model of a fuselage structure, collecting physical field input parameters, integrating and generating a digital engineering package, and carrying out the temperature field calculation through a thermal coupling solver based on the digital engineering package, the method comprises the following steps: acquiring temperature distribution of a fuselage, mapping the temperature distribution of the fuselage into a thermal stress field through a thermoelastic constitutive equation, performing vector superposition on the thermal stress field and a mechanical load to generate a comprehensive stress cloud picture, starting asymmetric layering design for a high-stress region based on the comprehensive stress cloud picture, and verifying mechanical balance of layering angle combination through a balance optimization algorithm. And obtaining a layering optimization scheme. The thermal deformation sensitivity is accurately evaluated by using the thermal-mechanical coupling solver and the finite element disturbance analysis method, and thermal deformation can be effectively predicted and controlled, so that the dimensional stability and the surface quality of a final product are improved.

The invention discloses a dark golden velvet texture ceramic rock plate, base glaze and a preparation method of the dark golden velvet texture ceramic rock plate, the dark golden velvet texture ceramic rock plate is prepared from golden velvet base glaze materials, water, carboxymethyl cellulose and sodium tripolyphosphate according to the mass ratio of 100: 36: (0.1-0.2): (0.3-0.5) through mixing and ball milling; the gold velvet base glaze is prepared from the following components in parts by weight: 3-8 parts of wollastonite, 5-10 parts of dolomite, 10-15 parts of strontium carbonate, 2-5 parts of calcined talc, 30-40 parts of potassium feldspar, 5-10 parts of nepheline, 5-10 parts of calcined kaolin, 5-15 parts of quartz, 1-5 parts of white corundum, 3-8 parts of calcined zinc oxide and 10-15 parts of matte transparent frit; the matte transparent frit comprises the following components in percentage by mass: 55%-60% of SiO2, 12%-15% of AL2O3, 2%-3% of K2O, 3%-4% of Na2O and 20%-25% of CaO, and the burning vector of the matte transparent frit is 1%-5%. According to the scheme, the light transmittance of a glaze layer is improved, the transparency is improved, meanwhile, the surface gloss can be kept to be uniformly dispersed and is not clear, and the glaze touch feeling is soft like velvet.

The present invention relates to a method for simulating and modeling the projection of the automatic fiber placement trajectory of a composite material. The method includes the following steps: obtaining the center point coordinates by averaging the coordinates of all nodes of the calculation unit; making a perpendicular projection point from the center point coordinates to the center lines of all tow trajectories of the currently selected ply, calculating the shortest distance from the center point to the center lines of all tow trajectories of the selected ply using the distance formula after obtaining the projection point coordinates, and selecting its tow trajectory by comparing all the above shortest distances; making a tangent to the selected tow trajectory such that the tangent passes through the projection point; calculating the dot product of the tangent vector and the ply coordinate system of the calculation unit to obtain the true ply angle of the single layer of the selected calculation unit, and replacing the theoretical ply angle of the single layer of the selected calculation unit with the true ply angle. The present invention obtains an accurate and true ply angle and can accurately simulate the structural performance of the actual automatic fiber placement.

The invention relates to the technical field of high polymer material ingredients, and discloses a low-linear expansion coefficient PCR-PP bumper material and a preparation method thereof.The low-linear expansion coefficient PCR-PP bumper material comprises a low-expansion inorganic core, an interface gradient coupling agent and a surface activity modifier, the interface gradient coupling agent forms a brush-like topology grafting layer with the grafting rate of 2.5%-4.5% on the surface of the low-expansion inorganic core, and the surface activity modifier forms a brush-like topology grafting layer with the grafting rate of 2.5%-4.5% on the surface of the low-expansion inorganic core; the surface activity regulator performs steric hindrance locking on the brush-like topological grafting layer through long-chain alkyl of the surface activity regulator. According to the preparation method, a gradient distribution interface layer with specific grafting density and chain segment length is constructed on the periphery of an inorganic core, so that an interface chain segment actively absorbs thermal expansion displacement of a matrix by utilizing conformation transformation; the thermal stress vector discontinuity between the filler and the matrix is eliminated, and an interface mechanical response mode is reconstructed to inhibit interface delamination and microcrack initiation while the overall linear expansion coefficient is inhibited.

The invention discloses a resin-glass fiber coupling flow simulation test method which comprises the following steps: acquiring rheological characteristic parameters of resin and physical characteristic parameters of glass fiber, and measuring interface characteristic parameters; defining a plurality of glass fibers as equivalent fiber bundle flow units, and calculating physical characteristic parameters of the equivalent fiber bundle flow units; constructing a resin flow field model, and performing multi-scale simulation on the movement of the equivalent fiber bundle flow unit; constructing a motion equation of the equivalent fiber bundle flow unit, and outputting a motion velocity vector; and constructing a control equation of the resin flow field, outputting the distribution density of local equivalent fiber bundle flow units at different positions in the coupling flow process of the equivalent fiber bundle flow units and the resin flow field model, and further simulating the distribution density condition of the glass fibers when the glass fibers and the resin are mixed and flow under different conditions. The effect of mixed flowing of glass fibers and resin in different shapes is simulated, and effective guidance is provided for optimization of a composite material forming process.

The present invention relates to a method for non-destructive testing of a woven composite part whose tomographic volume has been previously acquired and divided into viewing areas, characterized in that it comprises the following steps of cutting the viewing areas of the tomographic volume into three-dimensional sub-volumes; extraction of a descriptor vector and projection of the extracted descriptor vector so as to condense the descriptor vector into a reduced descriptor vector; conversion of the reduced descriptor vector into a scalar value representing a likelihood of the sub-volume belonging to a sound class, aggregation of the scalar values ​​in each of the viewing areas and estimation of the membership of the sound class; and checking for the presence of defects on the woven composite part, according to the estimates of the membership of the viewing areas of the tomographic volume thus obtained.Figure for the summary: Fig. 2.

The present invention relates to the field of intelligent weaving technology, specifically a three-dimensional weaving active control method and system for eliminating local wrinkles in fabrics, the method comprising the following steps: obtaining a core mold centerline based on the core shaft surface, and obtaining a core mold surface triangular patch in combination with the core mold centerline and the outer contour; dividing the core mold surface triangular patch based on the product's expected weaving angle distribution and obtaining the expected weaving angle direction vector; obtaining the expected yarn trajectory based on the expected weaving angle direction vector and fabric uniformity; analyzing any discrete point on the core mold centerline based on the expected yarn trajectory and a guide ring, and obtaining a first control parameter result and a second control parameter result for the discrete point. The present invention accurately solves the control parameters based on the uniformity of yarn distribution and the interaction between yarns to ensure the continuity and stability of weaving, thereby ensuring the weaving accuracy of large-scale complex structure core molds.

The present application relates to a kind of alignment methods of the oblique angle of the oblique end face of pigtail, belong to optical fiber detection technical field, comprising the following steps: step 1) using ANSYS software adopts stereoscopic scanning method scanning and gathers the model data of pigtail and rectangular capillary;Step 2) the oblique angle that the end of pigtail needs to be ground is set in advance, the end of pigtail is simulated to be ground, and the deformation of pigtail grinding is analyzed;Step 3) using vector angle method analyzes the oblique angle of the end of pigtail after grinding, detects the oblique angle that the end of pigtail needs to be ground and the oblique angle of the end of pigtail after grinding;Step 4) the oblique angle of the end of pigtail after grinding is processed;The beneficial effects of the present application: by comparing the oblique angle that the end of pigtail needs to be ground and the oblique angle of the end of pigtail after grinding, the deviation between the oblique angle of the oblique end face of the pigtail after correction or detection grinding and the oblique angle of the oblique end face of the pigtail actually needed is reduced.

To provide high-strength polyethylene original yarn with an improved shrinkage ratio and a manufacturing method thereof.SOLUTION: A ratio (A / B) is 16 or over, wherein A is the highest point of an intensity peak formed in a scattering vector of 0-0.04Å-1 in small angle X-ray scattering (SAXS) and B is the highest point of an intensity peak formed in a scattering vector of 0.05-0.08Å-1, a shrinkage ratio is 2.5% or over, a crystallinity is 65-85%, a weight-average molecular weight (Mw) is over 300,000 g / mol and 600,000 g / mol or under, and a molecular weight distribution is over 5 and under 9.SELECTED DRAWING: Figure 1

The invention discloses an everting 5D seamless process for a rear shoe cover, which relates to the technical field of shoemaking processes, and comprises the following steps: providing a specially-made rear shoe cover blank of which the predetermined everting area is a composite material layer with continuously gradually changed modulus from inside to outside; performing three-dimensional partitioning and differential energy input on the eversion region; a global controllable non-contact forming force field is established around the softened blank; the air pressure vector of each action point in the force field is calculated and dynamically regulated in real time; programmed cooling cooperating with the characteristics of the phase-change material is carried out on the formed body, and a shoe rear cover finished product is obtained. According to the method, the composite material with the modulus changing in a gradient mode is adopted, partition differential heating is combined with non-contact type laminar flow air pressure field driving, high-precision and damage-free three-dimensional forming of the eversion area of the rear shoe cover is achieved, and the excellent size stability and shape retentivity of a product are guaranteed; and an advanced manufacturing solution with high flexibility, digitization and extremely high consistency is provided for the shoemaking industry.

A method for separating a glass ribbon comprises moving the ribbon at a ribbon velocity vector in a conveyance direction. The method further comprises exposing a path on the ribbon to a laser beam to heat the ribbon along the path. The method further comprises moving the laser beam at a spot velocity vector in the conveyance direction that is equal to the ribbon velocity vector. The path continues to be exposed to the laser beam while the ribbon moves at the ribbon velocity vector. The method further comprises melting the ribbon along the path while the path is rapidly heated during the exposing and the moving. In response to the melting, a glass sheet is separated from the ribbon along the path and rounded, separated edges are simultaneously formed adjacent the path on the glass sheet and the ribbon.

The invention discloses a single-fiber vector stress-strain sensor based on a process of coating and plating a solid and liquid double-metal layer on the surface of a spandex fiber, which comprises the spandex fiber as a matrix, a lower electrode layer deposited on the surface of the matrix, an upper electrode layer deposited on the lower electrode layer, and the matrix, the lower electrode layer and the lower electrode layer are packaged through a flexible packaging layer; the lower electrode layer is gold nanoparticles attached to the substrate, the upper electrode layer comprises a metal nickel-plated layer on the lower electrode layer and a liquid metal layer coated on the metal nickel-plated layer, and the flexible packaging layer is made of chitosan. According to the invention, the problem of irreversible conductivity degradation caused by repeated stretching of the existing sensor is solved. The invention further discloses a preparation method of the single-fiber vector stress-strain sensor based on the process of coating the surface of the spandex fiber with the solid and liquid double metal layers.

The invention relates to the technical field of electric heating materials, and discloses an electric heating element with wave-transparent performance and a preparation method thereof.Graphene inorganic fiber fabric is adopted as a conductive heating substrate, so that the electric heating element has excellent electric heating performance, the transmission capacity of the electric heating element to electromagnetic waves is remarkably improved, and the dual requirements of invisibility and deicing are met; in the preparation method, a forward transmission coefficient obtained by a vector network analyzer is introduced, and a surface resistance, an electrode size and a power density calculation model are combined, so that the number of partitions and electrode structure parameters are scientifically determined, and the whole machine is ensured to work stably under the conditions of input voltage and target power; a heating path is accurately designed through an equivalent parallel resistance model, so that the heat uniformity and the response speed are improved; and the cross section area of the electrode is determined by combining international electronic design standards to ensure structural safety and thermal stability.

An additive-containing silica sol in which a scattering intensity (I) of the additive-containing silica sol as a function of scattering vector (q) determined by a small-angle scattering method using X-rays satisfies Formulae (2) and (3):0.1≤(Im⁢axB) / (I0B)-(Im⁢axA) / (I0A)≤4.8Formula⁢ (2)1≤(Im⁢axA) / (I0A)For⁢mula⁢ (3)where IB0 and IA0 are respectively scattering intensities when scattering vector (q) nm−1 of the silica sol is 0.05 if a silica particle concentration in the silica sol before (IB0) and after (IA0) an additive is added is 3.5% by mass, and IBmax and IAmax are respectively scattering intensities when the scattering vector (q) nm−1 of the silica sol is a maximum value if the silica particle concentration in the silica sol before (IBmax) and after (IAmax) the additive is added is 3.5% by mass. A HAZE value of the silica sol after storage at 20° C. for 24 hours is lower than before the additive is added.

An apparatus for fabricating an elasticized material having at least one elastic strand transversely positioned across the apparatus. The apparatus includes a first bonding module and a second bonding module positionable in proximity to the first bonding module. At least one of the first bonding module and the second bonding module has a face with a width dimension and a circumferential axis and is rotatable about a rotation axis in a velocity vector direction, the face having a contour pattern containing a plurality of entrapment elements arranged along a width of the contour pattern, the plurality of entrapment elements having a land and a notch constructed to receive and hold the at least one elastic strand, wherein the contour pattern is arranged at an angle of between −30° and +30° from perpendicular to the at least one elastic strand with respect to the velocity vector direction, during bonding operation, and wherein the land and notch has a longitudinal axis that is at an angle of between −30° and +30° from parallel to the at least one elastic strand with respect to the velocity vector direction.

Pultrusion device (100) for the production of fiber-reinforced profiles (300), comprising a fiber feeder (110) for feeding a fiber material (210), in particular a single thread or fiber bundle (210); an impregnation tool (120) for impregnating the fiber material (210) supplied by the fiber feeder (110), in particular in a pultrusion matrix; a shaping tool (130) for shaping and at least partially curing the impregnated fiber material (210) in order to produce a fiber-reinforced profile (300); a pulling device (140) configured to pull the fiber material (210) alternately or continuously, in particular via the fiber feed (110), through the pultrusion device (100), in particular the impregnation tool (120) and the forming tool (130), and thereby defining a straight main direction of movement, a straight pultrusion direction (P), of the fiber material (210) through the pultrusion device (100); wherein the impregnation tool (120) and / or forming tool (130) has at least two housing parts (121, 122, 131, 132) which form a cavity (120a, 130a) through which the fiber material (210) is drawn and wherein contact surfaces of the housing parts (121, 122, 131, 132) define at least one parting surface (T); characterized by the fact that at least one normal vector (N) of at least one separating surface (T) is not perpendicular to a direction vector of the straight pultrusion direction (P) and where: - that at least one separating surface (T) is a separating plane (T) which has the normal vector (N) that is not perpendicular to the direction vector of the straight pultrusion direction (P) and a magnitude of an angle α between the normal vector (N) and the straight pultrusion direction (P) has an angle value or has a value of < 89° and >1° or - a first extension direction or a first direction vector of the at least one parting surface (T) runs parallel to the normal vector of the pultrusion direction (P) and a second extension direction of the at least one parting surface (T) runs parallel to the pultrusion direction and wherein the at least one parting surface (T) in this second extension direction is at least partially, preferably completely, wavy, zigzag-shaped or inclined plane, at least partially, preferably completely, alternately falling and rising.

The invention relates to the technical field of textile printing and dyeing, and discloses a low-temperature environment-friendly soaping process of a cotton knitted dyed fabric, which comprises the following steps: step 1, performing interface modification treatment on the dyed fabric through ultrasonic wave and negative pressure dipping to form a micro-interface mass transfer channel; step 2, carrying out dynamic temperature-electric field coupling catalytic soaping on the fabric subjected to interface modification by adopting a temperature-sensitive catalytic system; step 3, performing gradient countercurrent rinsing of electric field vector regulation and control on the soaped fabric; and 4, regenerating the rinsing wastewater through membrane-electrolysis coupling treatment, and recycling the regenerated rinsing wastewater in the step 3. Multiple chemical bonding is formed by a surface modifier and a fiber matrix, a three-dimensional ordered pre-adsorption interface layer is constructed, the action efficiency and stability of a functional additive are remarkably improved, and the problem of quality fluctuation caused by non-uniform treatment is fundamentally solved.

This invention discloses a dark-colored velvet-textured ceramic slab, a base glaze, and its preparation method. The dark-colored velvet-textured base glaze is prepared by ball milling according to the following mass ratio of material: water: carboxymethyl cellulose: sodium tripolyphosphate: 100:36:(0.1-0.2):(0.3-0.5). The material of the velvet-textured base glaze is prepared from the following components in parts by weight: 3-8 parts wollastonite, 5-10 parts dolomite, 10-15 parts strontium carbonate, 2-5 parts calcined talc, 30-40 parts potassium feldspar, 5-10 parts nepheline, 5-10 parts calcined kaolin, 5-15 parts quartz, 1-5 parts white corundum, 3-8 parts calcined zinc oxide, and 10-15 parts matte transparent frit. The matte transparent frit includes the following components in the following mass percentage: SiO2. The composition is 55-60%, Al₂O₃ 12-15%, K₂O 2-3%, Na₂O 3-4%, CaO 20-25%, and the calcination vector of the matte transparent frit is 1%-5%. This solution improves the light transmittance of the glaze layer, enhances the transparency, and maintains a uniform and dispersed surface gloss without crystallization, resulting in a glaze surface with a velvety soft feel.

The invention provides a control method and system of industrial wrinkle removal equipment, and relates to the technical field of wrinkle removal control, and the method comprises the following steps: reading fiber and wrinkle process characteristics of a fabric to be subjected to wrinkle removal, analyzing a molecular chain bond angle variable of the fabric, and determining a wrinkle removal constraint condition meeting a fiber elastic limit; a wrinkle removal area is positioned through image acquisition, and a wrinkle removal area vector is determined; the method comprises the following steps: establishing a dynamic decision model, making a periodic wrinkle removal decision in combination with a constraint condition and a region vector, determining a multi-path wrinkle removal scheme through multi-target optimization iteration, performing timestamp marking, and finally implementing wrinkle removal control through an intelligent central control system. By means of the method and device, the problems that in the prior art, due to the fact that the wrinkle removing area cannot be accurately positioned, the wrinkle removing scheme cannot be dynamically adjusted, the processing efficiency is low, excessive processing or insufficient processing occurs in the wrinkle removing process, and the quality and durability of the fabric are further affected can be solved, highly-automatic and intelligent wrinkle removing control is achieved, and the fabric quality and durability are improved. And the production efficiency and the fabric processing quality are improved.

The invention relates to the technical field of three-dimensional weaving processes, in particular to a special-shaped structural part weaving process reasoning method and system based on an eccentricity theory. The method comprises the following steps of: obtaining a homogenized surface grid of a core mold key section by utilizing the three-dimensional model; obtaining a knitting angle vector field based on an eccentric knitting theory and the homogenized surface grid; according to the knitting angle vector field, expected fabric structures on different areas of a core mold are optimized; and through the expected fabric structure, reasoning and generating eccentric knitting process parameters. According to the process parameters generated through reasoning, fabric defects at complex geometrical characteristics of the special-shaped structural part are completely eliminated, the coverage rate difference of the inner side and the outer side is reduced by 24% or above, the knitting pose constraint of a traditional knitting process is broken through, and a theoretical basis is provided for low-cost, rapid and automatic knitting production line process planning software of the large-size special-shaped structural part.

The present invention discloses an optical fiber two-dimensional vector ocean turbulence sensor based on an airfoil shear flow structure, which includes an optical fiber vector sensor module, a transducer structure connection module, and a protective sleeve module; the optical fiber vector sensor module is composed of four optical fibers that are connected in series and orthogonally distributed in the cross-section of the cantilever beam, a polymer wrapping layer, and a metal cantilever; the transducer structure connection module is composed of a connecting rod, a lock nut, and a through-hull joint; the protective sleeve module is composed of a protective sleeve and a probe, and the gap between the probe and the protective sleeve is sealed with glue. The beneficial effects of the present invention are as follows: high-precision optical fiber two-dimensional vector shear flow sensing is achieved by reading the strain distribution on the four optical fibers; the sensitivity is increased by using a composite cantilever transducer structure of a cantilever beam and a polymer, the cumulative length of the optical fiber, etc., and the sensitivity reaches 1×10-1 με·ms2 / kg; multiple optical fiber two-dimensional vector ocean turbulence sensors are connected in series through optical fibers to form an ocean turbulence sensing array to realize synchronous acquisition of multi-point ocean turbulence information.

Manufacturing an elastic material (134) having elastic strands (12) involves first and second joining modules (210, 220) positioned close to each other, wherein at least one module (210) has a surface (210F) rotatable about an axis, the surface having a repeating profile pattern containing a plurality of ridges (210RL), wherein the plurality of ridges contain a platform (210R) and a notch (210N), the notch (210N) being configured to receive and hold at least one elastic strand (12). The platform (210R) and the notch (210N) have a longitudinal axis at an angle of -30° to +30° with respect to the vector of an individual ridge (210RL).

The invention relates to a method for planning the local solidification of layers of powdered material during the layer-by-layer production of a three-dimensional object, comprising the following steps: step a): determining at least one inner surface region (15 (II)) and at least one lower surface region (14 (II)) in contiguous regions (18 (I)) of the layer (7) to be solidified; step b): defining, for each inner surface area (15 (II)), an inner surface pattern (21) having inner surface vectors (1 ', 3', 4 ', 6', 7 ', 9', 10 ', 12', 13 '), and defining, for each lower surface area (14 (II)), a lower surface pattern (22) comprising lower surface vectors (2', 5 ', 8', 11 ', 14'), the defining of the inner surface pattern (21) being performed independently of the defining of the lower surface pattern (22); step c): defining a processing sequence of all the inner surface vectors (1 ', 3', 4 ', 6', 7 ', 9', 10 ', 12', 13 ') and the lower surface vectors (2', 5 ', 8', 11 ', 14'); the method is characterized in that, in step c), a plurality of inner surface vector blocks (23a, 23b) and a plurality of lower surface vector blocks (24a, 24b) are defined, the inner surface vector blocks each comprising one or more inner surface vectors (1 ', 3', 4 ', 6', 7 ', 9', 10 ', 12', 13 ') to be continuously processed, and the lower surface vector blocks each comprising one or more lower surface vectors (2', 5 ', 8', 11 ', 14') to be continuously processed, and defining a sequence of vector blocks processing the inner surface vector blocks (23a, 23b) and the lower surface vector blocks (24a, 24b) in which the inner surface vector blocks (23a, 23b) and the lower surface vector blocks (24a, 24b) alternate. By means of the invention, a high-quality, accelerated exposure of the connected lower surface region (14 (II)) and inner surface region (15 (II)) is carried out while avoiding overheating of these regions.

The invention relates to the technical field of chemical raw material separation, and provides an intelligent parameter control method and system for high-purity isoflavone separation and extraction. The method comprises the following steps: acquiring temperature field data, pressure fluctuation data, solvent concentration gradient and material particle size distribution real-time data in an isoflavone separation and extraction process; establishing a dynamic separation factor of isoflavone aglycone and glycoside forms; adjusting supercritical CO2 extraction pressure and entrainer concentration, and configuring a directional dissociation vector of a phenolic hydroxyl functional group; and introducing a state space, setting a dynamic separation factor as a constraint, determining an optimal control parameter combination in combination with real-time data, and cooperatively controlling the separation and extraction process. According to the method, the technical problems that aglycone and glycoside forms are difficult to efficiently separate and the product purity and yield are low due to lack of parameter cooperative control in the supercritical CO2 extraction process of the isoflavone in the traditional chemical raw material production are solved, and the technical effect of improving the separation efficiency and purity of the isoflavone in the chemical raw material is achieved.

The invention belongs to the technical field of optical fiber sensing and curvature measurement, and particularly relates to an optical fiber vector curvature sensor based on polydimethylsiloxane and a preparation method thereof.The optical fiber vector curvature sensor based on polydimethylsiloxane comprises a coreless optical fiber, and the outer side of the coreless optical fiber is divided into an upper semicircular area and a lower semicircular area; wherein a layer of metal film is arranged on the outer side of one semicircular area, a layer of high-refractive-index film is deposited on the outer side of the metal film, and a layer of polydimethylsiloxane is arranged on the outer side of the high-refractive-index film; the invention discloses a preparation method of an optical fiber vector curvature sensor based on polydimethylsiloxane. The preparation method comprises the following steps: forming a surface plasma resonance area on the outer side of a coreless optical fiber; depositing a metal film on the surface of the surface plasma resonance area; depositing a high-refractive-index film on the outer side of the metal film; and coating polydimethylsiloxane on the surface of the high-refractive-index thin film. Vector detection is realized by using an asymmetric structure, curvature sensitivity is improved by compounding SPR angle modulation and a refractive index detection mechanism, and the bending direction can be continuously detected and identified in a wide curvature range.

The invention relates to the technical field of power line icing prevention and control, in particular to an icing optical fiber composite overhead ground wire tension calculation method and system, and the method comprises the steps: obtaining the inherent parameters and stringing parameters of an icing optical fiber composite overhead ground wire; deducing a tension calculation formula based on a state equation according to an oblique parabola theory; calculating the line drawing force under different icing thicknesses by using the formula; verifying a calculation result through structural simulation software; and drawing a tension icing map and carrying out icing verification. According to the method, the vector sum of the self weight, the ice weight and the wind load is taken as the comprehensive load, accurate calculation under the combined action of multiple loads is achieved, and deviation caused by excessive simplification of a traditional method is avoided. Through a dual verification mechanism combining theory and simulation, the calculation accuracy is ensured, and the relationship among the span, the icing thickness and the tensile force is visually displayed. The built systematized icing verification process forms a complete line safety evaluation system, and the safety operation level of the power grid under the extreme meteorological condition is effectively improved.

The present application relates to the technical field of high polymer material processing equipment control, and discloses an intelligent control system for PVC shrink film raw material mixing, comprising a data acquisition module, a state solving module, a feedforward control module, a disturbance execution module, a discharge determination module and a main control unit. The collected motor active power and temperature signals are converted into specific mechanical energy and temperature rise rate, a two-dimensional phase plane is constructed, and the tangent slope is calculated to feedforward adjust the servo proportional valve opening degree to match the material rheological state. When the temperature rise rate appears a minimum value, the system actively injects a frequency increment disturbance, and extracts a thermodynamic response characteristic quantity after a set temperature measurement time lag. A two-dimensional response vector is constructed using the characteristic quantity and the input quota threshold. The system determines the real flow state according to the deflection angle of the response vector and outputs a discharge instruction. The present application overcomes the thermal lag error of the temperature sensor, prevents material clumping during the liquid adding process, and improves the accuracy of the discharge end point identification.

A cellulose fiber-reinforced polypropylene resin formed body that is a resin formed body having respective diffraction peaks observed at positions of a scattering vector s of 1.61±0.1 nm−1, 1.92±0.1 nm−1, and 3.86±0.1 nm−1 in a wide-angle X-ray diffraction measurement, and is characterized by having ΔT calculated by the following formula (1) of 40.0° C. or more; and a cellulose fiber-reinforced polypropylene resin formed body that is a resin formed body having the above diffraction peaks and is characterized by having ΔTm and ΔTc expressed by the following formulae (2) and (3) and satisfying ΔTm<ΔTc; and a producing method of these.ΔT=Tm(PP Cell)−Tc(PP Cell)  (1)ΔTm=Tm(PP)−Tm(PP Cell)  (2)ΔTc=Tc(PP)−Tc(PP Cell)  (3)

The present invention discloses an SPH-WENO numerical simulation method applied to the problem of strong impact of solids, and relates to the technical field of SPH numerical simulation for the strong impact process of elastoplastic materials, including high-precision WENO reconstruction of the left and right states of the contact particle pair based on the SPH framework, and interpolation of the missing template points in the WENO template using the second-order Taylor expansion to reconstruct the left and right states of the particle pair; constructing a coordinate rotation-independent contact solution framework, substituting the reconstructed left and right states into the framework structure for iterative solution, and obtaining the contact solution of each component of the physical parameters of the particle itself. Therefore, by adopting the above-mentioned SPH-WENO numerical simulation method applied to the problem of strong impact of solids, it is possible to construct a WENO high-order format under the SPH framework, obtain the left and right states containing the density velocity vector and the stress vector, thereby obtaining a high-precision contact solution, and realizing low dissipation and high-precision numerical simulation for the problem of strong impact of solids.