EP4627146A1 - Procede de determination d'une cartographie de tissage - Google Patents
Procede de determination d'une cartographie de tissageInfo
- Publication number
- EP4627146A1 EP4627146A1 EP23822069.3A EP23822069A EP4627146A1 EP 4627146 A1 EP4627146 A1 EP 4627146A1 EP 23822069 A EP23822069 A EP 23822069A EP 4627146 A1 EP4627146 A1 EP 4627146A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weaving
- cell
- zone
- grid
- area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C19/00—Methods or devices concerned with designing or making patterns, not provided for in other groups of this subclass
- D03C19/005—Electronic
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/02—Reinforcing materials; Prepregs
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/12—Vehicles
Definitions
- TITLE METHOD FOR DETERMINING A WEAVING MAPPING
- the design of the woven reinforcement i.e. the preform
- the preform is a complex process, which requires in-depth knowledge of the material properties which derive from the structure and the type of reinforcement, as well as the manufacturing processes.
- the composite material must have certain mechanical characteristics, which are set by the design office depending on the type of part, while its manufacturing process is subject to various constraints.
- the design of the woven reinforcement requires significant upstream work during which an optimal compromise must be found between the requirements relating to the material characteristics and the constraints imposed by the weaving.
- There is software incorporating algorithms for optimizing textile layers but this software does not take into account the constraints imposed by weaving or the optimization of weaves.
- programming a textile part requires a significant amount of time (of the order of several months for a complex part) which has a major impact on the iterations between the design office and the textile workshop and, by consequently, on product development times.
- the invention offers a solution to the problems mentioned above, by making it possible to design the architecture of the woven reinforcement in an automatic and accelerated manner according to a set of manufacturing constraints.
- One aspect of the invention thus relates to a method, implemented by computer, for determining a weaving map of an area of a part to be manufactured in a woven composite material.
- the method may include: receiving a representation of said area of the room; receive predefined values of parameters relating to manufacturing constraints of the area of the part; determining, from the representation of the area of the part and a first subset of values among the predefined values received, a weaving grid of the area of the part, the weaving grid comprising a plurality of cells; and successively determine, for each cell of the weaving grid, a respective weaving composition compatible with a second subset of values among the predefined values received; in which the determination of a weaving composition for a current cell of the weaving grid depends on a weaving composition already determined for a cell of the weaving grid adjacent to the current cell; and wherein the weave map of the part area includes the cells of the weave grid and the respective weave compositions.
- weaving mapping is meant a set of data making it possible to represent a weave associated with a zone of a mechanical part (for example a woven reinforcement).
- weaving composition is meant a set of data making it possible to characterize the weaving in the area concerned, in particular the type of threads used and the way in which the threads are arranged in relation to each other.
- the weave composition allows you to completely define the weave within a cell, and the weave map corresponds to the set of weave compositions for the cells.
- weaving mapping makes it possible to represent the weaving architecture of the mechanical part area.
- zone is meant a region of a mechanical part to be manufactured in a woven material.
- a mechanical part to be manufactured may include a plurality of zones.
- the term “zone” can also designate an entire mechanical part (for example small, and for which the manufacturing constraints are the same at every point of the part).
- the parameters relating to manufacturing constraints of the zone are parameters representing criteria to be respected for the design of the weaving, which are typically determined or validated upstream by experts.
- the values of these parameters depend on the type of part to be manufactured, and even the area of the part to be manufactured. In other words, for two different areas of the same room (for example example the foot and head of a motor blade), the parameter values may differ.
- weaving grid is meant a mesh of the area of the part considered. Determining the weaving grid therefore includes determining this mesh, and in particular the dimensions of the cells. This determination is advantageously carried out from a first subset of values among the predefined values of the parameters relating to the manufacturing constraints received.
- weaving composition is meant a set of parameters making it possible to characterize the weaving (number of threads in warp and weft, relative arrangements of the threads in relation to each other, number of layers, etc.) .
- the weaving composition is determined using a second subset of values among the predefined values of the parameters relating to the manufacturing constraints received.
- the determined composition advantageously takes into account the manufacturing constraints imposed for the part.
- the above method proposes to determine, during successive steps, a respective weaving composition for each cell of the weaving grid.
- a respective weaving composition for each cell of the weaving grid.
- the weave composition is determined for another cell, and so on until all cells in the grid have been covered.
- weaving composition already determined for a cell is therefore meant a weaving composition determined for a cell different from the current cell during a step prior to the current step.
- the weaving composition of a cell advantageously takes into account the weaving compositions already determined for neighboring cells, thus avoiding structural problems in the weaving composition (for example, non-compatible weaving compositions between adjacent cells).
- the representation of the area of the room may include at least one two-dimensional modeling of the area of the room.
- the at least one two-dimensional modeling of the part may include at least one thickness map of the area of the part.
- thickness mapping of the area of the part is meant a set of data making it possible to characterize a contour of a section of the part according to a plane (X,Y) for example, and thicknesses along the Z axis inside this contour.
- a thickness map can be presented in the form of an image showing a contour, and in which each pixel inside the contour is associated with a value which depends on the thickness of the part at the level of this pixel.
- the method further comprises: receiving an initial cell among the plurality of cells of the weaving grid; in which the successive determination, for each cell of the weaving grid, of the respective weaving composition is carried out according to an order of travel of the cells of the weaving grid whose starting point corresponds to the initial cell, the order of cell path being such that each current cell other than the initial cell for which the weaving composition is determined is adjacent to another cell of the weaving grid for which the weaving composition has already been determined.
- the determination of the weaving composition for the current cell of the weaving grid depends on all the weaving compositions already determined for the cells of the weaving grid adjacent to the current cell.
- the first subset of values among the predefined values received may comprise a list of authorized weaves, a list of authorized weft yarn titles, a list of warp yarn titles allowed and one or more string spacing target values.
- Determining the weave grid of the room area may include: selecting a weave for the area from the list of permitted weaves; select a weft thread title for the zone from the list of authorized weft thread titles; select a warp title for the zone from the list of allowed warp titles; determining a warp spacing value from the one or more warp spacing target values and the selected warp yarn title; and determining a weft spacing for the area based on the selected warp yarn count, the selected weft yarn count and the determined warp spacing target value.
- the invention also relates to a system for manufacturing a part in a woven composite material, which may include: a system for determining a weaving map of the part as previously; and a loom for manufacturing the part from the weaving map of the determined part.
- a computer program implementing all or part of the process described above, installed on pre-existing equipment, is in itself advantageous.
- Figure 2 represents a flowchart of a method for determining a weaving map for a part to be manufactured in a woven composite material, according to one embodiment.
- Figure 3a represents an example of regions of a part to be manufactured in a woven composite material.
- Figure 3b represents an example of layers of a part to be manufactured in a woven composite material.
- Figure 4 represents several sections of a weaving grid of a portion of a part to be manufactured in a woven composite material, according to one embodiment.
- Figure 5 represents a travel order of the weaving grid, according to one embodiment.
- Figure 6 represents a device configured to implement steps of the method for determining a weaving map for a part to be manufactured in a woven composite material, according to one embodiment.
- Figure 7 represents an example of a method for determining the weaving composition of an initial cell according to one embodiment.
- Figure 2 represents a flowchart of a method for determining a weaving map for a part to be manufactured in a woven composite material, according to one or more embodiments.
- weaving mapping is meant a spatial representation of the structure (i.e. the different types of threads used and the way in which they are entangled) of the reinforcement of the part to be manufactured, this mapping possibly being subsequently used to weave said reinforcement according to the determined structure.
- weaving mapping also designates a set of data characterizing or making it possible to obtain the spatial representation of the structure of the woven reinforcement.
- a model of the part to be manufactured can be received.
- the model of the part to be manufactured may include in particular a 2D representation of the part, as well as different zones of the part.
- the 2D representation can for example be a 2D thickness map, that is to say a 2D model representing a contour of the part (typically the contour of a 2D projection of the part on a plane (X,Y)) and, for each point inside the contour, data on the thickness of the part at this point in a third direction (for example Z).
- the model received in step 210 may further include data relating to different zones of the part, the different zones of the part corresponding to regions of the part whose weaving properties or constraints differ from each other.
- FIG. 3a An example of such regions is shown in Figure 3a.
- the part to be manufactured is an aircraft engine blade, and four zones 301 a, 301 b, 301 c, 301 d of the part are predefined.
- the zones 301 a, 301 b, 301 c, 301 d correspond to four regions subdividing the blade in its longitudinal axis.
- the number of zones can be different from four (for example one, two, three, five or more than five), and the zones can be defined along other axes, or even along no axis. privileged (the zones constituting any mapping of the part).
- the zones 301 a, 301 b, 301 c, 301 d represent regions of the part for which the desired mechanical properties and the weaving constraints are not necessarily the same from one region to another. the other.
- the desired mechanical properties and weaving constraints do not vary within a predefined zone.
- the model of the part to be manufactured received during step 210 of Figure 2 may comprise a plurality of “layers”, i.e. a set of layers, some of which are superimposed (partially or in full), generally defined by an expert and intended for use in computer-aided drawing software.
- layers An example of layers is shown in Figure 3b.
- the model of the object comprises a plurality of layers 302a, 302b, 302c, 302d, 302e, 302f, represented on the left diagram in a reference frame (X,Y) and on the diagram on the right in a reference (Y, Z).
- Each layer can itself be composed of one or more zones as defined previously with reference to Figure 3a.
- the model of the part received in step 210 of Figure 2 may comprise a plurality of 2D representations respectively associated with the different layers and the different zones.
- a 2D thickness map can be received for each layer, the thickness mapping showing the geometry (ie the contours), as well as data to characterize the different areas of the layer.
- the number of layers is not fixed at six as in the example of Figure 3b. Depending on the embodiments, there may be a single layer, or any (integer) number of layers, or even no layer strictly speaking (the part is then represented by a 2D model comprising one or more zones).
- the coordinates of a reference point can be received during step 210.
- this reference point belongs to a single zone as defined previously, and to a single layer if the model includes a plurality of layers.
- this reference point constitutes the starting point for determining the weaving composition in the different cells of the model (also called “population” of the cells).
- the coordinates of the zero part are conventionally fixed at (0,0,0) in the three-dimensional orthogonal coordinate system (X,Y,Z).
- a set of predefined values of parameters relating to manufacturing constraints is received.
- These are predetermined values, which correspond to target values (i.e. values that we wish to achieve through the process) or imposed values (for example by the loom or by constraints linked to the part to be manufacture known by experts in the field).
- These predetermined values are conventionally set by an expert as well as by the technical specifications, but also by the constraints of the loom for example.
- the parameters relating to manufacturing constraints can be related to mechanical characteristics desired for the part (necessary so that the part can be certified and used subsequently), and can therefore be related to the wires used and/or to the way in which the yarns are arranged, such as warp-to-weft ratio or fiber volume fraction.
- the warp-weft ratio corresponds to the ratio between the surface mass of the warp yarn and the surface mass of the weft yarn
- the fiber volume fraction (FV) corresponds to the percentage of fibers in a volume composite material (reinforcement and matrix).
- the predefined values can be associated with a specific zone of the model received in step 210.
- step 220 several sets of values can be received, each set being associated with a respective zone.
- sets of respective RCT and FV values can be received in step 220 for zones 301a (root of the blade), 301 b (part lower middle), 301 c (upper middle part) and 301 d (blade head).
- the RCT and/or FV value may be one or more point values, or an interval of values.
- the weave corresponds to the assembly pattern of the threads (interlacing pattern of warps and wefts).
- the weft (resp. warp) spacing corresponds to the distance between two successive weft (resp. warp) threads.
- the “title” of yarn corresponds to the type of yarn, characterized by its linear mass, which depends in particular on the number of fibers which compose it. For example, available yarn counts may be 12k, 24k, 36k, 48k, 72k, etc., where an “Xk” count corresponds to a yarn comprising Xx1000 fibers per yarn. The list of available thread titles may differ between warp and weft.
- the maximum (resp. minimum) number of textile layers corresponds to the maximum (resp.
- the maximum (resp. minimum) number of chains (resp. frames) represents the maximum (resp. minimum) number of warp (resp. weft) threads in a warp/weft plane (X,Y).
- Each intermediate weaving grid can comprise a plurality of cells, for example nx * ny cells distributed along the warp and weft axes (X,Y).
- Each cell of an intermediate weaving grid can be associated with a thickness value, which represents a thickness of the cell in a third direction Z.
- the thickness values of the cells are variables, which are part of the parameter values that the method described proposes to determine.
- the intermediate weaving grids are determined for all the layers and/or all zones of the part, from the representation received in step 210 and the predefined values of relative parameters to manufacturing constraints received in step 220.
- the associated weaving grid can represent a mesh of said area of the layer, in which each cell of the mesh can be associated with a value d the thickness of the cell, as well as a number of textile layers in the cell.
- step 230 may comprise a first step of determining the weaving composition associated with a so-called “initial” cell, which corresponds to the zero piece.
- the determination 230 of the intermediate weaving grids respectively associated with these zones/layers begins with the determination of the intermediate weaving grid associated with the zone/layer comprising the zero piece, and by a first step of determining the weaving composition of the cell associated with the zero piece.
- the other intermediate weaving grids can in turn be determined according to an order explained below.
- this first step of determining the weaving composition of the initial cell one or more combinations of values are determined for the following parameters: weave, thread counts in weft and warp, warp spacing and spacing frame. A number of layers is also determined for the initial cell. These combinations of values are determined so as to be compatible with the weaving constraints, i.e. with the values of the parameters relating to manufacturing constraints received in step 220.
- the series of steps 710, as well as the series of steps 720 and the final test 730, are therefore implemented for the 6 possible combinations.
- a thickness of the cell can be determined during a step 712 as a function of the initial frame spacing calculated during step 711:
- NBinit fNB (warp thread, weft thread, FLinit, target FV, t).
- the weft spacing value can then be updated during step 714 from the warp yarn count, the weft yarn count, the initial number of layers determined in step 713, of the target FV and the thickness determined during step 712:
- the number of layers of the cell can be updated during a step 715, as a function of the warp thread count, the weft thread count, the spacing frame updated in step 714, the target FV and the thickness determined in step
- step 720 can be performed on the number of layers determined in step 715. If the number of layers obtained in step 715 is different from the initial number of layers determined in step 713, a new series of steps 720 can be implemented to optimize the number of layers and stabilize this number of layers according to variations in frame spacing and thickness. If the number of layers obtained in step 715 is equal to the initial number of layers determined in step 713, the series of steps 740 can be directly implemented.
- the series of steps 730 may include a step 731 of updating the frame spacing, a step 732 of updating the thickness of the cell, an update update 733 of the number of layers and a stability test 734 on the number of layers.
- the weft spacing can be updated in step 731 as a function of the warp yarn count, the weft yarn count, the number of layers determined in step 715, the target FV and of the cell thickness determined in step 712:
- FL fFi_(warp thread, weft thread, NB, target FV, t).
- the thickness of the cell can be updated in step 732 as a function of the frame spacing calculated in step 731:
- NB fNB (warp thread, weft thread, FL, target FV, t).
- test 734 corresponds to a convergence test of the calculated number of layers.
- a convergence criterion can be, for example, a difference between the current value of the number of layers and the previous value of the number of layers less than a predetermined threshold, and/or a difference between the current value of the number of layers and the number of minimum layers less than a predetermined value (in other words, with this last criterion, it is checked whether the minimum number of layers is reached).
- test 734 If the convergence criterion is not reached (test 734, arrow “ko”), a new iteration of the series of steps 730 is implemented. If the convergence criterion is reached (test 734, “ok” arrow), the series of steps 740 is implemented.
- the series of steps 740 includes a final test 741 at the end of which it is determined whether the calculated set of values is retained as a possible solution (743) or whether it is excluded from the possible solutions (742).
- Condition 1 the frame spacing obtained at the end of the series of steps 730 when it is implemented, or at the end of the series of steps 710 when the series of steps 730 is not implemented, must be between the minimum frame spacing and the maximum frame spacing;
- Condition 2 the number of layers obtained at the end of the series of steps 730 when it is implemented, or at the end of the series of steps 710 when the series of steps 730 n is not implemented, must be less than or equal to the maximum number of layers.
- the calculated set of values i.e. the combination ⁇ thread count in warp, thread count in weft, weft spacing, number of layers ⁇
- the set of values is preserved (step 743), that is to say it constitutes a possible set of values for determining the weaving grid.
- step 230 once the composition of the initial cell is determined, all the intermediate weaving grids can be constructed, starting with the intermediate weaving grid including the initial cell, then gradually constructing the intermediate weaving grids of the different zones/different layers, as described below. Determining the intermediate weaving grid includes determining, for each layer zone typically, a weft spacing value and a warp spacing value (which therefore define the dimensions of the cells along the axes (X, Y)).
- transition grids can be determined. For example, for two neighboring intermediate weaving grids, it is possible to modify locally (around adjacent portions) the two intermediate weaving grids to ensure continuity of order C1 between them.
- neighboring weaving grid is meant a weaving grid of which at least certain cells are adjacent to the cells of the other weaving grid.
- a processing order of the layers and zones it is possible to define a processing order of the layers and zones, to ensure that a weaving grid is determined as a function of neighboring weaving grids. For example, for each layer, it is possible to arrange the zones of this layer according to the distance from their center to part zero. It is also possible to classify the layers according to their “neighborhood order” with the layer containing the zero piece: for example, the layer containing the zero piece can be associated with an order 0, the layers having at least one neighboring region with the layer including zero piece can be associated with an order 1, layers not having neighboring regions with zero piece but having at least one neighboring region with a layer of order 1 can be associated with order 2, etc.
- layer 302d includes zero parts
- layer 302d is assigned order 0
- layers 302a, 302b, 302e, 302f are assigned order 1
- layer 302c an order 2.
- the weaving grids can then be determined as follows: first we choose a layer according to the increasing order of the layers starting with 0 (two layers of the same order can be processed independently, successively or in parallel), then, for each layer, we successively construct the weaving grids for the different zones, starting with the zone closest to part zero and then considering the zones according to their increasing distance to part zero. [00112] Of course, other determination orders are possible, as long as they take into account the proximity of the zones and layers in relation to each other.
- step 230 can also include the reception of so-called “transition” armors, which correspond to armors determined for the transition zones (i.e. zones comprising cells of a first zone and cells of a second zone neighboring the first zone).
- transition armors can advantageously be provided by the user, when the armors of the two neighboring zones are not compatible (for example when the minimum number of layers associated with one of the armors is greater than the maximum number of layers associated with the 'other armor).
- the method of Figure 2 may include a step 240 during which an initial zone is selected to start the population method.
- this initial zone may correspond to the zone comprising the zero coins received in step 210 (which only belongs to a single zone).
- step 240 can be omitted.
- an initial cell is determined.
- This initial cell constitutes the starting point of the population method.
- the initial cell is the first cell for which the weave composition is determined.
- the initial cell determined in step 250 for the initial zone determined in step 240 can be the cell of the grid of weaving associated with the zero piece, i.e. the cell in which the zero piece is located.
- weaving composition is meant a description of the weaving threads (in warp and weft) and the way in which they are positioned one by one. relative to others in the cell, or, equivalently, a set of data to describe the weaving threads and how they are positioned relative to each other in each cell of the weaving grid.
- the data concerns the number of layers associated with each cell, the number of weft threads and warp threads per layer, the spacing between layers, the spacing between weft and warp threads, the number of weft (resp. warp) threads between two consecutive warp (resp. weft) threads, etc.
- These data can be represented in the form of 3D mapping, as in Figure 4 where some sections of such mapping are shown.
- Figure 4 thus represents a weaving grid and weaving compositions for cells of the weaving grid, in several sections.
- the weaving grid shown in Figure 4 comprises a plurality of cells 401 a, 401 b, 401 c, 401 d, 401e.
- the direction 401 a, 401 b, 401 c, 401 d, 401e.
- step 260 (which corresponds to a step of determining the weaving composition) can be omitted, because the weaving composition of the initial cell has already been determined in step 230.
- step 270 it is checked whether all the cells of the zone considered have been populated (ie if step 260 of determining the weaving composition of a cell has been implemented for all cells in the current area). If all the cells have not yet been populated (step 275, arrow “N”), a new cell is considered (step 275) and the step of determining the weaving composition (step 260) is implemented to this new cell.
- step 280 When all the cells have been populated (step 270, arrow “O”), and in the case where the model received in step 210 includes a plurality of zones, it is checked in step 280 whether all the zones of the model were populated. If certain areas of the model have not yet been populated (step 280, arrow “N”), a new area is considered (step 285), a new initial cell is determined for the new area considered (step 250), and the determination of the weaving composition for the cells of the new zone is implemented (steps 260, 270 and 275). When all areas of the model have been populated (step 280, arrow “O”), the population method is complete. It is then possible, for example, to represent graphically the 3D mapping of the part (step 290). Alternatively or in addition, step 290 may include the representation of successive sections of the 3D mapping in the form of "weaving boxes", the boxes being able to be used as input data for the loom to manufacture the woven reinforcement of the room.
- step 275 the determination of the new cell is carried out from a predefined path of the weaving grid / the intermediate weaving grid.
- An example of such a journey is shown in Figure 5.
- two intermediate weaving grids 502a and 502b are represented, and correspond respectively to two neighboring zones of the model.
- the intermediate weaving grid 502a is supposed to include the zero piece 503.
- the zero piece 503 separates the intermediate grid 502a into four quadrants 501 a, 501 b, 501 c and 501 d, the first quadrant 501 a comprising the zero part 503.
- zero part 503 is the first cell for which the weaving composition is determined.
- the cells are filled (or “populated”) step by step according to a predefined path.
- this predefined path begins at part zero 503 and continues in a given direction (here, along the lines from left to right, i.e. along the X-oriented direction) 504a inside the first quadrant 501 a.
- a given direction here, along the lines from left to right, i.e. along the X-oriented direction
- the other three quadrants 501 b, 501 c, 501 d can be populated in a similar manner.
- the second quadrant 501 b can be populated by starting with the cell 507 directly adjacent to the zero room 503, then by populating the cells step by step in a direction 508a opposite to the direction 504a of the first quadrant 501a, and going up the lines in the Y direction in a manner similar to the first quadrant 501 a.
- the four quadrants 501 a, 501 b, 501c, 501 d can be populated successively or in parallel, once the zero part 503 has been populated.
- the loop of steps 260-270-275 of Figure 2 is completed for the current zone, and the next zone is selected if necessary. appropriate (step 285 of Figure 2).
- the next zone can be selected as previously described for the determination 230 of the weaving grid.
- a new initial cell 509 must be selected to begin populating the second intermediate weaving grid 502b (new step 250).
- the new initial cell 509 can be any cell neighboring a cell of the first intermediate weaving grid 502a already populated.
- the weaving composition of the current cell is therefore determined. This determination is carried out from the weave of the current zone determined in step 230, as well as the weft and warp threads of the current cell determined in step 230, so as to jointly determine the difference between the volume fraction of fiber in the cell thus filled and the volume fraction of target fiber and the difference between the RCT in the cell thus filled and the target RCT, while taking into account neighboring cells already filled.
- the number of layers of the current cell depends on the number of layers of neighboring cells already filled.
- the number of layers of the current cell is between: the minimum of the number of layers of neighboring cells already filled minus a first predetermined authorized variation; and the maximum number of layers of neighboring cells already filled plus a second predetermined authorized variation.
- the predefined values of the parameters relating to manufacturing constraints received in step 220 include a maximum number or a minimum number of layers, this number can be taken into account to determine the number of layers of the current cell in step 260.
- rules relating to the number of layers can be predefined, to determine when the number of layers of a cell must be reduced or increased compared to the number of cell layers filled in the previous step. These rules are generally defined by the textile department and are part of the parameters relating to the manufacturing constraints received in step 220. They may in particular concern constraints relating to an alternation of threads or continuity constraints in the number of layers.
- the number of layers of the current cell can also be determined from the armor selected in step 230 for the zone comprising the current cell (current zone). Indeed, depending on the type of part to be manufactured, certain weaving rules can be imposed, for example to only carry out a division of threads when the weave applied to the area belongs to a predefined weave group. If the weave applied to the area does not belong to this weave group, it is not possible to divide the wires, and therefore the number of layers in the current cell must be the same as in neighboring cells.
- each cell can be modeled by a data matrix, each component of this matrix representing information relating to the wire present in the portion of the cell corresponding to the component of the matrix (each component can for example take a value from: a first value indicating that there is no thread in the portion of the cell considered, a second value indicating that there is a weft thread in the portion of the cell considered, and a third value indicating that there is a warp thread in the portion of the cell considered).
- each component can for example take a value from: a first value indicating that there is no thread in the portion of the cell considered, a second value indicating that there is a weft thread in the portion of the cell considered, and a third value indicating that there is a warp thread in the portion of the cell considered).
- a first value indicating that there is no thread in the portion of the cell considered
- a second value indicating that there is a weft thread in the portion of the cell considered
- a third value indicating that there is a warp
- two matrices of the same dimension can be associated with each cell, one corresponding to the warp threads and the other to the weft threads, and for each of the two matrices, the components can be equal to 0 if no thread of the type concerned is present in the corresponding regions, and at a value representative of the thread count used if a thread of the type concerned is present in the corresponding regions.
- a 3D representation of the woven part can be represented by a 3D matrix containing cells, each cell representing a warp / weft crossing, in which is indicated whether or not the warp thread is taken by the weft thread.
- This 3D matrix is constructed from the model of the part received in step 210 (for example the thickness maps), weaving grids and weaving compositions determined in steps 230 to 280. [00131] The weaving compositions determined for the cells of already populated zones and neighboring cells of a new zone not yet populated can be used as input data to populate this new zone. The same goes for the different layers of the model, if applicable.
- the process of Figure 2 can advantageously be applied in parallel for several possible weaving grids (as defined in step 230). Indeed, it may happen that, for a given weaving grid, the process cannot result in filling all the cells while respecting the manufacturing constraints. In this case, this weaving grid is discarded, and only the weaving grids for which all the cells of the model could be filled are retained.
- the parallel application of the process for several weaving grids makes it possible, at the end of the process, to determine “global” parameters on the filled weaving grids, for example an average number of layers, or an average volume fraction. on all the cells of a filled weaving grid. It is then possible to select, among all the filled weaving grids, the one whose global parameters are closest to the manufacturing constraints.
- Figure 6 represents a device for determining the values of the firing parameters for a projectile ingestion test on a blade in a static position, according to one or more embodiments of the invention.
- the device comprises a computer 600, comprising a memory 601 for storing instructions allowing the implementation of the method, the predefined values of parameters relating to manufacturing constraints, and temporary data for carrying out different stages of the processes described above.
- the computer 600 further comprises a circuit 602.
- This circuit can be, for example a processor capable of interpreting instructions in the form of a computer program, an electronic card whose steps of the method of the invention are described in silicon, or even a programmable electronic chip such as an FPGA chip (for “Field-Programmable Gate Array” in English).
- the computer 600 includes an input interface 403 for receiving the model of the part to be manufactured and predefined values of parameters relating to manufacturing constraints, and an output interface 604 for providing the weaving mapping.
- the computer can include, to allow easy interaction with a user, a screen 605 and a keyboard 606.
- the keyboard is optional, in particular in the context of a computer having the form of a touch tablet, For example.
- the functional diagram presented in Figure 2 is a typical example of a program of which certain instructions can be carried out using the device described. As such, Figure 2 can correspond to the flowchart of the general algorithm of a computer program within the meaning of the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Woven Fabrics (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2212588A FR3142375B1 (fr) | 2022-11-30 | 2022-11-30 | Procede de determination d’une cartographie de tissage |
| PCT/FR2023/051839 WO2024115841A1 (fr) | 2022-11-30 | 2023-11-22 | Procede de determination d'une cartographie de tissage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4627146A1 true EP4627146A1 (fr) | 2025-10-08 |
Family
ID=85685406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23822069.3A Pending EP4627146A1 (fr) | 2022-11-30 | 2023-11-22 | Procede de determination d'une cartographie de tissage |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20260193819A1 (fr) |
| EP (1) | EP4627146A1 (fr) |
| FR (1) | FR3142375B1 (fr) |
| WO (1) | WO2024115841A1 (fr) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3634827A (en) * | 1970-04-16 | 1972-01-11 | Ibm | Processing of multilayer weave design data |
| CN111177809B (zh) * | 2019-12-31 | 2021-09-21 | 南京玻璃纤维研究设计院有限公司 | 一种纹织图生成方法、装置、电子设备及可读存储介质 |
| CN111177810B (zh) * | 2019-12-31 | 2021-11-09 | 南京玻璃纤维研究设计院有限公司 | 预制体的纹织图生成方法、装置、电子设备及存储介质 |
-
2022
- 2022-11-30 FR FR2212588A patent/FR3142375B1/fr active Active
-
2023
- 2023-11-22 US US19/134,054 patent/US20260193819A1/en active Pending
- 2023-11-22 EP EP23822069.3A patent/EP4627146A1/fr active Pending
- 2023-11-22 WO PCT/FR2023/051839 patent/WO2024115841A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR3142375A1 (fr) | 2024-05-31 |
| US20260193819A1 (en) | 2026-07-09 |
| WO2024115841A1 (fr) | 2024-06-06 |
| FR3142375B1 (fr) | 2026-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109808171B (zh) | 一种面向熔融沉积制造的3d连续路径生成方法 | |
| EP3000001B1 (fr) | Procede de definition de trajectoires de fibre a partir d'un champ vectoriel | |
| CA2862685A1 (fr) | Preforme fibreuse d'une aube de turbomachine en materiau composite a plate-forme integree, et son procede de realisation | |
| FR3062659A1 (fr) | Appel de preforme dans un metier a tisser du type jacquard | |
| US11408099B2 (en) | Method and device for generating jacquard pattern of preform, electronic device and storage medium | |
| WO2015036390A1 (fr) | Procédé de conception assistée par ordinateur comportant une étape de modélisation | |
| WO2024115841A1 (fr) | Procede de determination d'une cartographie de tissage | |
| FR3032145A1 (fr) | Procede de fabrication d'une pale d'helice | |
| FR3053724A1 (fr) | Plateforme rapportee pour soufflante de turbomachine, et procede pour la fabriquer | |
| CN115204359B (zh) | 基于Winograd卷积的并行深度卷积神经网络优化方法 | |
| CN103930750A (zh) | 用于由3d机织复合材料制成的部件的设计 | |
| Tithi et al. | Prune the unnecessary: Parallel pull-push louvain algorithms with automatic edge pruning | |
| FR3016982A1 (fr) | Procede de simulation de mise en forme d'une bande textile sur un moule de revolution | |
| CN114547944B (zh) | 一种2.5维编织复合材料纬纱波动建模方法 | |
| EP4147033B1 (fr) | Vérification du positionnement d'une préforme fibreuse dans une aube | |
| FR3111920A1 (fr) | Texture fibreuse pour carter en matériau composite avec torons de chaîne hybrides | |
| EP4022249B1 (fr) | Installation de tissage permettant la détermination du nombre de filaments dans un toron | |
| US9026239B2 (en) | APC model extension using existing APC models | |
| CN109143334B (zh) | 一种层位插值方法、装置及系统 | |
| EP3423249A1 (fr) | Installation et procede pour la formation d'une preforme fibreuse de revolution presentant en section radiale un profil evolutif | |
| WO2022195218A1 (fr) | Procédé de fabrication d'une pièce de turbomachine en matériau composite comportant une zone de rigidification | |
| FR3147631A1 (fr) | Procédé de contrôle non destructif d'une pièce en matériau composite | |
| EP3500414A1 (fr) | Installation et procede de mise en forme d'une preforme fibreuse de revolution presentant en section radiale un profil evolutif | |
| WO2024224007A1 (fr) | Procede de determination d'un squelette d'un toron d'un materiau composite tisse | |
| CA2813924C (fr) | Procede et dispositif de prototypage rapide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20250627 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
| INTG | Intention to grant announced |
Effective date: 20260610 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |