CATIA-based end amplification panel parameterization design method and system

Abstract

The invention provides a CATIA-based end amplification panel parameterization design method and system, and the method comprises the steps: classifying end amplification panels, and creating a UDF parameterization template for each class of end amplification panels; the process of creating the parameterized template sequentially comprises the steps of drawing boundary conditions, drawing end amplification features, setting control parameters and issuing the parameterized template. And finally, calling a corresponding parameterization template according to the type of the end amplification panel to be generated, and after calling the template, selecting a boundary and adjusting the orientation of the boundary, defining attributes such as the material, the plate thickness and the thickness orientation of the boundary, adjusting control parameters, and creating the required end amplification panel. According to the parameterization design method, the end amplification panel can be automatically generated through the template, boundaries, materials, control parameters and the like can be set or modified in the process, diversified design requirements are met, batch generation can be carried out, manual participation is not needed, and the modeling efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ship design and manufacturing, and in particular to a CATIA-based parametric design method and system for an end amplification panel. Background Art

[0002] End enlarged panels are widely used in hull structure design and are used in various ship types. When using CATIA for hull structure modeling, the beveled panels can be quickly designed through the end cutting function of secondary development, while the end enlarged panels need to be modeled by drawing boundaries through sketches. Each end enlarged panel requires a separate sketch, which is inefficient and difficult to modify.

[0003] There are many forms of end enlargement panels, but end enlargement forms in similar positions generally have common shape features. However, based on structural design specification requirements and analysis and calculation requirements, their geometric dimensions will be somewhat different. Therefore, when designing end enlargement panels, they cannot be simply copied, but require similar shape features but independent change of geometric dimensions.

[0004] CATIA has powerful parametric modeling capabilities. Parametric design can give the model control parameters. By controlling the parameters, the characteristic dimensions of the model can be quickly changed, thereby achieving rapid modeling. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a parametric design method for an end enlargement panel based on CATIA, comprising the following steps:

[0006] S1: Classify the end enlarged panels, which include the boundary and the end enlarged features covering the boundary. The boundary includes the web end and the panel end connected to the component. The end enlarged features include the outer contour surface covering the boundary.

[0007] S2: Based on the classification results, create a parametric template for each category of end enlargement panel: first draw the boundary conditions, then draw the end enlargement features and auxiliary elements according to the boundary conditions, and finally set the control parameters to adjust the sizes of the end enlargement features and auxiliary elements, and finally complete the creation of the parametric template;

[0008] S3: Call the corresponding parametric template according to the type of the end enlargement panel to be generated. After calling the template, select the reference surface, select the boundary to be created and adjust the boundary to a plane or a curved surface, and control the direction of the curved surface, define the boundary properties, adjust the control parameters, and create the required end enlargement panel.

[0009] Optionally, the end magnifying panels are divided into six categories; the first, second and third categories of end magnifying panels have two boundaries, the fourth and fifth categories of end magnifying panels have three boundaries, and the sixth category of end magnifying panels has four boundaries; the boundaries are planes or curved surfaces.

[0010] Optionally, the first type of end enlarged panel comprises a first boundary and a second boundary which are perpendicular to each other, and the end enlarged feature is that both sides of the first boundary are arc-shaped and connected to the toe end located at the second boundary;

[0011] The second type of end enlarged panel comprises a first boundary and a second boundary perpendicular to each other, and the end enlarged feature is that both sides of the first boundary are connected to the second boundary by an oblique line, and an arc tangent to the outside of the oblique line is connected to the toe end located at the second boundary;

[0012] The third type of end enlarged panel comprises a first boundary and a second boundary perpendicular to each other, and the end enlarged feature is that both sides of the first boundary are connected to the toe end of the second boundary by an oblique line;

[0013] The fourth type of end enlarged panel includes a first boundary, a second boundary and a third boundary, the first boundary and the second boundary are perpendicular to each other, the third boundary and the second boundary are perpendicular to each other and are located on the right side of the first boundary; the end enlarged feature is that the left side of the first boundary is an arc connected to the toe end of the second boundary, the right side of the first boundary is an arc and a straight line tangent to the right end of the arc is connected to the third boundary;

[0014] The fifth type of end-enlarged panel comprises a first boundary, a second boundary and a third boundary, wherein the second boundary and the third boundary are respectively perpendicular to the first boundary, and the third boundary is parallel to the second boundary, and the end-enlarged feature is that both sides of the first boundary are arcs, and two ends of the arcs are respectively connected to the toes of the second boundary and the third boundary;

[0015] The sixth type of end magnification panel includes a first boundary, a second boundary, a third boundary and a fourth boundary. The first boundary and the second boundary are perpendicular to each other, and the third boundary and the fourth boundary are respectively located on both sides of the first boundary and are perpendicular to the second boundary. The end magnification feature is that both sides of the first boundary are connected to the third and fourth boundaries by an arc and a diagonal line tangent to the end of the arc.

[0016] Optionally, step S2 includes:

[0017] S2.1: Create boundary conditions: Draw a two-dimensional spline curve as a boundary on the same plane through a sketch, use the stretch command to stretch it into a surface, and use the reverse direction command to control the direction of the surface, so that when the template is called in step S3, the boundary to be created can be adjusted to a plane or a surface through commands, and the direction of the surface can be controlled;

[0018] S2.2: Draw a sketch: Draw a sketch constrained based on boundary conditions according to the geometric features of the end enlarged panel, and the sketch includes the end enlarged features and auxiliary elements of the end enlarged panel;

[0019] S2.3: Setting control parameters: After the sketch is drawn, set the control parameters as needed; the control parameters are used to adjust the end magnification feature of the end magnification panel;

[0020] S2.4: Publish parameterized templates.

[0021] Optionally, the auxiliary elements include supporting elements of the reinforcing ribs on the end enlarged panel, plate seam dividing surfaces, and auxiliary surfaces.

[0022] Optionally, the control parameters include toe height, arc radius, panel width, and panel seam dividing surface.

[0023] The present invention also provides a CATIA-based end enlargement panel parametric design system, and the parametric design system can implement the parametric design method.

[0024] Optionally include:

[0025] A classification module, used for classifying the structural forms of the end enlarged panels;

[0026] A parametric template generation module, used to create parametric templates for each category of end amplification panels;

[0027] The calling module calls the corresponding parameterized template according to the type of the end enlargement panel to be generated, and creates the end enlargement panel.

[0028] As described above, the present invention provides a parametric design method and system for end magnification panels based on CATIA. The parametric design method first classifies the end magnification panels, analyzes the structural forms of the commonly used end magnification panels and summarizes them, and divides them into six categories according to the number of boundary conditions and different geometric features; then creates a UDF parametric template for each category of end magnification panels, and the process of creating the parametric template includes drawing boundary conditions, drawing end magnification features, setting control parameters, and publishing parametric templates. Finally, the corresponding parametric template is called according to the type of the end magnification panel to be generated. After calling the template, the boundary is selected and the boundary direction is adjusted, and its material, plate thickness, thickness direction and other properties are defined, and the control parameters are adjusted to create the required end magnification panel. The parametric design method of the present invention can automatically generate the end magnification panel through the template, and the boundary, material, control parameters, etc. can be set or modified in the process to meet the diverse design requirements, and can be batch generated without manual participation, thereby improving the modeling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Shown is the classification of the end enlarged panel in the first embodiment of the present invention.

[0030] Figure 2 Shown is the UDF template of the end enlarged panel in the first embodiment of the present invention.

[0031] Figure 3 The diagram shows the creation of boundary conditions for a UDF template in the first embodiment of the present invention.

[0032] Figure 4 The diagram shows a sketch of a UDF template in the first embodiment of the present invention.

[0033] Figure 5 The display shows the control parameter settings of the UDF template in the first embodiment of the present invention.

[0034] Figure 6 The display shows the feature release of the UDF template in the first embodiment of the present invention.

[0035] Figure 7 Shown are specific features of the parameterized template of the first type of end enlarged panel in the first embodiment of the present invention.

[0036] Figure 8 Shown are specific features of the parameterized template of the second type of end enlarged panel in the first embodiment of the present invention.

[0037] Fig. 9 Shown are specific features of the parameterized template of the third type of end enlarged panel in the first embodiment of the present invention.

[0038] Fig.10 Shown are specific features of the parameterized template of the fourth type of end enlarged panel in the first embodiment of the present invention.

[0039] Fig.11 Shown are specific features of the parameterized template of the fifth type of end enlarged panel in the first embodiment of the present invention.

[0040] Fig.12 Shown are specific features of the parameterized template of the sixth type of end enlarged panel in the first embodiment of the present invention.

[0041] Fig.13 The diagram shows the calling of the UDF template in the first embodiment of the present invention.

[0042] Fig.14 Shown is a flowchart of the parameterized design method in Embodiment 1 of the present invention.

[0043] Component number description

[0044] 11 The First Frontier

[0045] 12 The Second Frontier

[0046] 13 The Third Frontier

[0047] 14 The Fourth Frontier DETAILED DESCRIPTION

[0048] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0049] For example, when describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional view showing the device structure will not be partially enlarged according to the general scale, and the schematic view is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional space dimensions of length, width and depth should be included.

[0050] For ease of description, spatial relational terms such as "under", "below", "below", "below", "above", "on", etc. may be used herein to describe the relationship of one element or feature shown in the drawings to other elements or features. It will be understood that these spatial relational terms are intended to include other directions of the device in use or operation in addition to the directions depicted in the drawings. In addition, when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or there can be one or more intervening layers. As used herein, "between..." means including the end point values.

[0051] In the context of the present application, a structure in which a first feature is described as being "above" a second feature may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact.

[0052] It should be noted that the illustrations provided in this embodiment are only used to illustrate the basic concept of the present invention in a schematic manner, and therefore the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0053] Embodiment 1

[0054] This embodiment provides a CATIA-based parametric design method for an end enlargement panel, comprising the following steps:

[0055] S1: Classify the end amplification panels. Analyze the commonly used structural forms of end amplification panels and summarize them. First, classify them according to the number of their boundary conditions, and then classify them according to their different geometric characteristics. The end amplification panels are divided into 6 categories and named, such as Figure 1 , Figure 2 shown.

[0056] The first, second and third types of end enlarged panels have two borders, the fourth and fifth types of end enlarged panels have three borders, and the sixth type of end enlarged panel has four borders.

[0057] The first type of end enlarged panel includes a first boundary 11 and a second boundary 12 which are perpendicular to each other, and the end enlarged feature is that both sides of the first boundary 11 are arc-shaped and connected to the toe end of the second boundary 12;

[0058] The second type of end enlarged panel comprises a first boundary 11 and a second boundary 12 which are perpendicular to each other, and the end enlarged feature is that both sides of the first boundary 11 are connected to the second boundary 12 by an oblique line, and an arc tangent to the outside of the oblique line is connected to the toe end of the second boundary 12;

[0059] The third type of end enlarged panel comprises a first boundary 11 and a second boundary 12 which are perpendicular to each other, and the end enlarged feature is that both sides of the first boundary 11 are connected to the toe end of the second boundary 12 by an oblique line;

[0060] The fourth type of end-enlarged panel includes a first boundary 11, a second boundary 12 and a third boundary 13. The first boundary 11 and the second boundary 12 are perpendicular to each other, and the third boundary 13 and the second boundary 12 are perpendicular to each other and are located on the right side of the first boundary 11. The end-enlarged feature is that the left side of the first boundary 11 is an arc connected to the toe end of the second boundary 12, and the right side of the first boundary 11 is an arc and a straight line tangent to the right end of the arc is connected to the third boundary 13.

[0061] The fifth type of end-enlarged panel includes a first boundary 11, a second boundary 12 and a third boundary 13. The second boundary 12 and the third boundary 13 intersect the first boundary 11 perpendicularly respectively, and the third boundary 13 is parallel to the second boundary 12. The end-enlarged feature is that both sides of the first boundary 11 are arcs, and the two ends of the arcs are respectively connected to the toes of the second boundary 12 and the third boundary 13.

[0062] The sixth type of end magnification panel includes a first boundary 11, a second boundary 12, a third boundary 13 and a fourth boundary 14. The first boundary 11 and the second boundary 12 are perpendicular to each other, and the third boundary 13 and the fourth boundary 14 are respectively located on both sides of the first boundary 11 and are perpendicular to the second boundary 12; the end magnification feature is that both sides of the first boundary 11 are connected to the third and fourth boundaries through an arc and a diagonal line tangent to the end of the arc.

[0063] It should be noted that the above-mentioned first boundary 11 is actually the end of the web, the second boundary 12, the third boundary 13 and the fourth boundary 14 are actually the ends of the panel connected to other components, and the enlarged features of the ends including arcs, oblique lines, straight lines, etc. are actually external contour surfaces used to reinforce the boundaries.

[0064] Then proceed to step S2: create a UDF parameterized template for each category of end amplification panel according to the classification result.

[0065] Specifically include:

[0066] S2.1: Create boundary conditions. Figure 3 As shown, the modeling method of the boundary conditions is: draw a two-dimensional spline curve on the same plane through a sketch, use the stretch command to stretch it into a surface, and use the reverse direction command to control the direction of the surface. In this way, when calling the template in step S3, the selected boundary to be created can be directly adjusted to a plane or a surface, and the direction of the surface can be adjusted through commands. Since the first boundary, the second boundary, the third boundary and the fourth boundary mentioned above may be the ends of a plane or a surface, an optional custom method is added here to facilitate free selection according to needs. Figure 2 As shown, the boundary can be a curved surface with different orientations, that is, the curved surface has different concave directions.

[0067] S2.2: Draw a sketch. Figure 4 As shown, the created boundary conditions are used as Use-Edges of the sketch. According to the geometric features of the end enlarged panel, a sketch constrained based on the boundary conditions is drawn. The sketch includes the end enlarged features and other auxiliary elements of the end enlarged panel. The auxiliary elements include the support elements of the stiffeners on the end enlarged panel, the plate seam division surface, the auxiliary surface, etc.

[0068] S2.3: Set control parameters. Figure 5 As shown in the figure, after the sketch is drawn, set the control parameters in the UDF template as needed; set the controllable parameters by defining Parameters, and associate the constraint dimensions in the sketch with the corresponding Parameters set by Formula;

[0069] S2.4: Publish parameterized templates. Figure 6 As shown, the end panel in the sketch is enlarged and published, including other auxiliary elements.

[0070] Specifically, for control parameters, different types of end magnification panels correspond to different control parameters, and the end magnification features, ie, external contour features, of the end magnification panels are adjusted through the control parameters, such as adjusting the height size, arc radius, etc.

[0071] The control parameters of the first type of end amplification panel are as follows: Figure 7 As shown, it includes the toe height, the distance from the toe to the web (A1, A2), the arc radius (R1, R2), the panel width (B1, B2), the non-enlarged section length (T), the distance from the plate seam surface to the enlarged section (P), and the auxiliary elements included are the rib support element (STIFF) and the plate seam dividing surface (PLANE).

[0072] The control parameters of the second type of end amplification panel are as follows: Figure 8 As shown, it includes the toe height, the distance from the oblique line to the web (A1, A2), the distance from the toe to the oblique line (W1, W2), the arc radius (R1, R2), the panel width (B1, B2), the magnified section height (H), the non-magnified section height (T), and the auxiliary elements included are the plate seam dividing surface (PLANE) and the auxiliary surface.

[0073] The control parameters of the third type of end amplification panel are as follows: Fig. 9 As shown, it includes the toe height, the distance from the toe to the web (A1, A2), the panel width (B1, B2), the magnified section height (H), the non-magnified section height (T), and the auxiliary elements included are the plate seam dividing surface (PLANE) and the auxiliary surface.

[0074] The control parameters of the fourth type of end amplification panel are as follows Fig.10 As shown, it includes the toe height, the distance from the toe to the web (A1), the arc radius (R1, R2), the panel width (B1, B2), the non-enlarged section height (T), the distance from the plate seam surface to the enlarged section (P), the straight section height (C), and the auxiliary elements included are the plate seam dividing surface (PLANE).

[0075] The control parameters of the fifth type of end amplification panel are as follows Fig.11 As shown, it includes the toe height, the distance from the toe to the web (A1, A2, A3, A4), the arc radius (R1, R2, R3, R4), the panel width (B1, B2), the distance from the plate seam surface to the enlarged section (P1, P2), and the auxiliary elements included are the rib support element (STIFF) and the plate seam dividing surface (PLANE).

[0076] The control parameters of the sixth type of end amplification panel are as follows Fig.12 As shown, it includes the height of the oblique line at the web (H), the height of the straight line at the boundary (A1, A2), the arc radius (R1, R2), the panel width (B1, B2), the height of the non-enlarged section (T), the distance between the plate seam surface and the enlarged section (P), and the auxiliary elements included are the support element of the rib (STIFF) and the plate seam dividing surface (PLANE).

[0077] Next, proceed to step S3: call the corresponding UDF parameterized template according to the type of the end enlarged panel to be generated. Fig.13 As shown, taking type 2-1 as an example, after calling the template, select the support surface (reference surface), select the boundary and adjust the boundary to a plane or a curved surface, and control the orientation of the curved surface, define its material, plate thickness, thickness orientation and other properties, adjust the control parameters, and create the required end enlargement panel.

[0078] Embodiment 2

[0079] Based on the parametric design method in the first embodiment, this embodiment provides a CATIA-based parametric design system for an end enlargement panel. The parametric design system can implement the parametric design method in the first embodiment, including:

[0080] A classification module, used for classifying the structural forms of the end enlarged panels;

[0081] The parameterized template generation module is used to create UDF parameterized templates for each category of end amplification panels.

[0082] Call the module to call the corresponding UDF parameterized template according to the type of end enlargement panel to be generated, select the support surface (reference surface), select the boundary and adjust the boundary to a plane or a curved surface, and control the orientation of the curved surface, define its material, plate thickness, thickness orientation and other properties, adjust the control parameters, and create the required end enlargement panel.

[0083] In summary, the present invention provides a parametric design method and system for end magnification panels based on CATIA. The parametric design method first classifies the end magnification panels, analyzes the structural forms of the commonly used end magnification panels and summarizes them, and divides them into six categories according to the number of boundary conditions and different geometric features; then creates a UDF parametric template for each category of end magnification panels, and the process of creating a parametric template includes drawing boundary conditions, drawing end magnification features, setting control parameters, and publishing parametric templates. Finally, the corresponding parametric template is called according to the type of the end magnification panel to be generated. After calling the template, the boundary is selected and the boundary direction is adjusted, and its material, plate thickness, thickness direction and other properties are defined, and the control parameters are adjusted to create the required end magnification panel. The parametric design method of the present invention can automatically generate the end magnification panel through the template, and the boundary, material, control parameters, etc. can be set or modified in the process to meet the diverse design requirements, and can be batch generated without manual participation, thereby improving the modeling efficiency.

[0084] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A parametric design method for end enlargement panel based on CATIA, It is characterized in that The steps include: S1: Classify the end enlarged panels, which include the boundary and the end enlarged features covering the boundary. The boundary includes the web end and the panel end connected to the component. The end enlarged features include the outer contour surface covering the boundary. S2: based on the classification results, create a parametric template for each category of end magnification panel: first draw the boundary, then draw the end magnification feature and auxiliary elements according to the boundary, and finally set the control parameters to adjust the size of the end magnification feature and the auxiliary elements, and finally complete the creation of the parametric template; S3: Call the corresponding parametric template according to the type of the end magnification panel to be generated. After calling the template, select the reference surface, select the boundary to be created and adjust the boundary to a plane or a curved surface, and control the direction of the curved surface, define the boundary properties, adjust the control parameters, and create the end magnification panel.

2. According to claim 1, the CATIA-based parametric design method for end enlargement panels, Features: The end magnifying panels are divided into six categories; the first, second and third category end magnifying panels have two boundaries, the fourth and fifth category end magnifying panels have three boundaries, and the sixth category end magnifying panels have four boundaries; the boundaries are planes or curved surfaces.

3. The CATIA-based parametric design method for end enlargement panels according to claim 2, Features: The first type of end enlarged panel comprises a first boundary and a second boundary perpendicular to each other, and the end enlarged feature is that both sides of the first boundary are arc-shaped and connected to the toe end located at the second boundary; The second type of end enlarged panel comprises a first boundary and a second boundary perpendicular to each other, and the end enlarged feature is that both sides of the first boundary are connected to the second boundary by an oblique line, and an arc tangent to the outside of the oblique line is connected to the toe end located at the second boundary; The third type of end enlarged panel comprises a first boundary and a second boundary perpendicular to each other, and the end enlarged feature is that both sides of the first boundary are connected to the toe end of the second boundary by an oblique line; The fourth type of end enlarged panel includes a first boundary, a second boundary and a third boundary, the first boundary and the second boundary are perpendicular to each other, the third boundary and the second boundary are perpendicular to each other and are located on the right side of the first boundary; the end enlarged feature is that the left side of the first boundary is an arc connected to the toe end of the second boundary, the right side of the first boundary is an arc and a straight line tangent to the right end of the arc is connected to the third boundary; The fifth type of end-enlarged panel comprises a first boundary, a second boundary and a third boundary, wherein the second boundary and the third boundary are respectively perpendicular to the first boundary, and the third boundary is parallel to the second boundary, and the end-enlarged feature is that both sides of the first boundary are arcs, and two ends of the arcs are respectively connected to the toes of the second boundary and the third boundary; The sixth type of end magnification panel includes a first boundary, a second boundary, a third boundary and a fourth boundary. The first boundary and the second boundary are perpendicular to each other, and the third boundary and the fourth boundary are respectively located on both sides of the first boundary and are perpendicular to the second boundary. The end magnification feature is that both sides of the first boundary are connected to the third and fourth boundaries by an arc and a diagonal line tangent to the end of the arc.

4. The CATIA-based parametric design method for end enlargement panels according to claim 1, It is characterized in that step S2 includes: S2.1: Create boundary conditions: Draw a two-dimensional spline curve as a boundary on the same plane through a sketch, use the stretch command to stretch it into a surface, and use the reverse direction command to control the direction of the surface, so that when the template is called in step S3, the boundary to be created can be adjusted to a plane or a surface through commands, and the direction of the surface can be controlled; S2.2: Draw a sketch: Draw a sketch constrained based on boundary conditions according to the geometric features of the end enlarged panel, and the sketch includes the end enlarged features and auxiliary elements of the end enlarged panel; S2.3: Setting control parameters: After the sketch is drawn, set the control parameters as needed; the control parameters are used to adjust the end magnification feature of the end magnification panel; S2.4: Publish parameterized templates.

5. The CATIA-based parametric design method for end enlargement panels according to claim 4, Features: Auxiliary elements include supporting elements of the stiffeners on the end enlarged panels, plate seam dividing surfaces, and auxiliary surfaces.

6. The CATIA-based parametric design method for end enlargement panels according to claim 5, Features: The control parameters include toe height, arc radius, panel width, and panel seam dividing surface.

7. A parametric design system for end enlargement panels based on CATIA, Features: The parametric design system can implement the parametric design method described in any one of claims 1-6.

8. The CATIA-based end enlargement panel parametric design system according to claim 7, It is characterized in that include: A classification module, used for classifying the structural forms of the end enlarged panels; A parametric template generation module, used to create parametric templates for each category of end amplification panels; The calling module calls the corresponding parameterized template according to the type of the end enlargement panel to be generated, and creates the end enlargement panel.

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