CN110254610A - A kind of three-dimensional modeling method of U-shaped Boardside protection structure - Google Patents
A kind of three-dimensional modeling method of U-shaped Boardside protection structure Download PDFInfo
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- CN110254610A CN110254610A CN201910547991.8A CN201910547991A CN110254610A CN 110254610 A CN110254610 A CN 110254610A CN 201910547991 A CN201910547991 A CN 201910547991A CN 110254610 A CN110254610 A CN 110254610A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 238000003032 molecular docking Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 230000005484 gravity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 210000001217 buttock Anatomy 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003447 ipsilateral effect Effects 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B71/00—Designing vessels; Predicting their performance
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- Ocean & Marine Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention relates to a kind of three-dimensional modeling methods of U-shaped Boardside protection structure.The following steps are included: creation deck plane and ship hull plate face, and interception sets the first arc segment of length on the intersection in deck plane and ship hull plate face；Upper arc surface is created to hull outside using the first arc segment as one side；The lower arc surface parallel with upper arc surface is created in the lower section of upper arc surface；Semi-circular tube face, the U-shaped circumferential surface to form U-shaped Boardside protection structure are created between upper arc surface and lower arc surface, the upper edge in semi-circular tube face is docked with the outer edge of upper arc surface, and the lower edge in semi-circular tube face is docked with the outer edge of lower arc surface；Draw longitudinal band steel face in the center of circle for crossing semi-circular tube face；Cross the corresponding U-shaped circumferential surface of rib bit line cutting and longitudinal band steel face, to obtain each bracket face.The three-dimensional modeling method of U-shaped Boardside protection structure of the invention, decomposes and simplifies modeling difficulty, improve modeling efficiency, enables the modeling process of each section simple and precision guarantees.
Description
Technical field
The present invention relates to ship fender modeling technique field more particularly to a kind of three-dimensional modeling methods of U-shaped Boardside protection structure.
Background technique
Fender is a kind of elastic buffering mechanism that ship marginal position is arranged in, and fender can buffer the impact that hull is subject to
Power, so that ship hull plate be avoided to be damaged easily.Need to initially set up threedimensional model when processing fender, but fender in the prior art
The specific size and shape of each section part mostly pass through manual lofting and are unfolded, and the process of modeling is relatively coarse, work as use
When this threedimensional model processing fender, often there is certain error in each part of fender, especially connect what fender was respectively segmented
At mouthful, the problem of usually will appear tandem docking not fairing, after there is such case, blanking again is generally required, sometimes very
To needing to carry out secondary adjustment assembly, increase additional processing cost.Furthermore when determining the center of gravity of ship by threedimensional model,
Since the three-dimensional fender model accuracy of manual lofting creation not can guarantee, the center of gravity of ship can only be carried out really by way of estimation
Fixed, it reduce the accuracys of ship center of gravity positioning.
Summary of the invention
The present invention provides a kind of three-dimensional modeling methods of U-shaped Boardside protection structure, for solving U-shaped fender knot in the prior art
The technical issues of three-dimensional modeling of structure is more rough, and the model accuracy of creation not can guarantee.
The three-dimensional modeling method of U-shaped Boardside protection structure of the invention adopts the following technical scheme that:
A kind of three-dimensional modeling method of U-shaped Boardside protection structure the following steps are included:
S1: creation deck plane and ship hull plate face, and the interception setting length on the intersection in deck plane and ship hull plate face
The first arc segment；
S2: upper arc surface is created to hull outside using the first arc segment as one side；
S3: the lower arc surface parallel with upper arc surface is created in the lower section of upper arc surface；
S4: semi-circular tube face, the U-shaped circumferential surface to form U-shaped Boardside protection structure are created between upper arc surface and lower arc surface, partly
The upper edge in round tube face is docked with the outer edge of upper arc surface, and the lower edge in semi-circular tube face is docked with the outer edge of lower arc surface；
S5: longitudinal band steel face is drawn in the center of circle for crossing semi-circular tube face；
S6: the excessively corresponding U-shaped circumferential surface of rib bit line cutting and longitudinal band steel face, to obtain each bracket face.
Further, in step s 2, the creation of upper arc surface is the following steps are included: first by the first arc segment to hull
Outside translation distance L1 simultaneously obtains the second arc segment, then with the first arc segment and the second arc segment for two opposite side, arc in creation
Shape face.
Further, in step s3, the creation of lower arc surface is the following steps are included: first put down downwards the second arc segment
It moves distance 2R and obtains third arc segment, R is the radius in semi-circular tube face, then creates arc lower by one side of third arc segment
Face.
Further, in step s 4, the creation in semi-circular tube face is the following steps are included: first in the second arc segment and third
The semi arch that radius is R is drawn between arc segment, and semi arch is then stretched into creation along the second arc segment or third arc segment
The semi-circular tube face.
Further, in step s 2, upper arc surface and the deck plane are coplanar.
Further, in step s 5, longitudinal band steel face is parallel with upper arc surface.
Further, in step s 5, the drafting in longitudinal band steel face the following steps are included: pass through the circle in semi-circular tube face first
The heart draws a plane parallel with upper arc surface, which constitutes the outer mouth line in longitudinal band steel face with the intersection in semi-circular tube face,
Then the plane and ship hull plate face are formed by intersection and translate set distance, to hull outside to obtain longitudinal band steel face
Interior mouth line.
The utility model has the advantages that the three-dimensional modeling method of U-shaped Boardside protection structure of the invention, the U-shaped circumferential surface of U-shaped Boardside protection structure is divided into
Upper arc surface, lower arc surface and three, arc tube face part are respectively established, and are decomposed and are simplified modeling difficulty in this way, mention
High modeling efficiency, such that the modeling process of each section is simple and precision guarantees.After the creation of U-shaped circumferential surface, longitudinal band steel
Face and each bracket face can operate expansion creation, and precision with higher by simple setting-out.U-shaped fender of the invention
The threedimensional model that the three-dimensional modeling method of structure is created may be directly applied to the calculating of ship center of gravity, and ship center of gravity
Precision can be guaranteed.
Detailed description of the invention
Fig. 1 is the Boardside protection structure schematic diagram of the embodiment 1 of the three-dimensional modeling method of U-shaped Boardside protection structure of the invention；
Fig. 2 is the Boardside protection structure sectional view of the embodiment 1 of the three-dimensional modeling method of U-shaped Boardside protection structure of the invention；
Fig. 3 is the U-shaped circumferential surface schematic diagram of the embodiment 1 of the three-dimensional modeling method of U-shaped Boardside protection structure of the invention；
Fig. 4 is the U-shaped circumferential surface decomposition diagram of the embodiment 1 of the three-dimensional modeling method of U-shaped Boardside protection structure of the invention；
Fig. 5 is the longitudinal band steel face and each bracket face of the embodiment 1 of the three-dimensional modeling method of U-shaped Boardside protection structure of the invention
Schematic diagram.
The reference numerals are as follows:
1- ship hull plate face, 2- upper arc surface, 3- semi-circular tube face, 4- lower arc surface, the longitudinal direction 5- band steel face, 6- bracket face,
7- deck plane, the first arc segment of 8-, the second arc segment of 9-, 10- third arc segment.
Specific embodiment
To better illustrate the object, technical solutions and advantages of the present invention, with reference to the accompanying drawings and examples to the present invention
Specific embodiment be described in further detail.The following examples are intended to illustrate the invention, but is not limited to of the invention
Range.
The embodiment 1 of the three-dimensional modeling method of U-shaped Boardside protection structure of the invention:
As shown in Figures 1 to 5, in the present embodiment U-shaped Boardside protection structure three-dimensional modeling method the following steps are included:
S1: creation deck plane 7 and ship hull plate face 1, and setting is intercepted on the intersection in deck plane 7 and ship hull plate face 1
First arc segment 8 of length；Specifically, the present embodiment middle deck face 7 is one piece of rectangle plane, ship hull plate face 1 is one piece of square
Together with shape curved surface, deck plane 7 and ship hull plate face 1 are intersected, formed angle is equal between deck plane 7 and ship hull plate face 1
Formed angle between ship middle deck to be processed and ship hull plate.Then it is cut on the intersection in deck plane 7 and ship hull plate face 1
The first arc segment 8 of setting length is taken, the length of the first arc segment 8 is equal to the length that fender is corresponded in actual conditions in the present embodiment
Degree.
S2: being that one side creates upper arc surface 2 to hull outside with the first arc segment 8；Specifically, first will in the present embodiment
First arc segment 8 is to translation distance L1 on the outside of hull and obtains the second arc segment 9, and L1 is the width of upper arc surface 2 in the present embodiment
Degree, the width of upper arc surface 2 can be decided in advance according to design requirement in a practical situation.In order to guarantee in the present embodiment
First arcwall face of creation is coplanar with deck plane 7, and it is also coplanar with deck plane 7 that the second arc segment 9 is formed by after translation.Then will
First arc segment 8 endpoint ipsilateral with the second arc segment 9 connects, so that two short connecting line segments are obtained, such first arc segment
8, the figure that the second arc segment 9 and two short connecting line segments are surrounded is the first arcwall face.
S3: the lower arc surface 4 parallel with upper arc surface 2 is created in the lower section of upper arc surface 2；Specifically, in the present embodiment
The second arc segment 9 translation distance 2R and is obtained into third arc segment 10 vertically downward first, R is semi-circular tube face 3 in the present embodiment
Corresponding radius, semi-circular tube face 3 can be described below.Then two short connecting line segments are moved to third arc segment 10 respectively
Two-end-point at, to extending two short connecting line segments that translation obtains on the inside of hull and until intersect with ship hull plate face 1, from
And obtain two long connecting line segments.The then plane that 10, two long connecting line segments of third arc segment and ship hull plate face 1 are surrounded
As lower arc surface 4, L3 is the width of lower arc surface 4 in attached drawing 2, and length represented by L2 is equal to the summation of L1 and R.
S4: semi-circular tube face 3, the U-shaped week to form U-shaped Boardside protection structure are created between upper arc surface 2 and lower arc surface 4
The upper edge in face, semi-circular tube face 3 is docked with the outer edge of upper arc surface 2, the lower edge in semi-circular tube face 3 and lower arc surface 4 it is outer
Edge docking；Specifically, choosing any point in arc segment in the present embodiment first, then done by the downward arc segment of point
Vertical line simultaneously hands over lower arc segment in intersection point point, so that the vertical line section between arc segment and lower arc segment is obtained, then with vertical line section
Center be the center of circle, with the vertical line segment length (as R) of half be radius draw out semi arch, then by semi arch along
Upper arc segment stretches creation semi-circular tube face 3, and any point has been selected in the end of upper arc segment in upper arc segment in the present embodiment
Point position, in this way by a direction, that is, stretchable creation semi-circular tube face 3.
S5: longitudinal band steel face 5 is drawn in the center of circle for crossing semi-circular tube face 3；Specifically, semi-circular tube face 3 is crossed in the present embodiment first
The center of circle (being actually circle central axis) draw a plane, which should ensure that flat with upper arc surface 2 during drafting
Row, the intersection in the plane and semi-circular tube face 3 constitute the outer mouth line in longitudinal band steel face 5, and outer mouth line is longitudinal band steel face 5 towards outer
The edge line of side.Then the plane and ship hull plate face 1 are formed by intersection and translate set distance outward, which is
Horizontal distance, the line segment obtained after translation are the interior mouth line in longitudinal band steel face 5, and interior mouth line is the inside in longitudinal band steel face 5
Edge line, furthermore in Fig. 2 of the present embodiment, L4 is bracket inside at a distance from ship hull plate face 1, and L4 is before design
It can decide, horizontal distance can be calculated by being then formed by angle by L4, deck plane 7 and ship hull plate face 1.So
Determine that the first line and buttock line in longitudinal band steel face 5, first line and buttock line are that longitudinal band steel face 5 is opposite by corresponding rib bit line afterwards
The edge line of two sides.Longitudinal band steel face 5 can be decided by outer mouth line, interior mouth line, first line and buttock line.It requires supplementation with
Bright, the present embodiment middle rib bit line is normal line during shipbuilding, a ship each rib bit line in modeling process
Position and orientation are determining.
S6: the excessively corresponding U-shaped circumferential surface of rib bit line cutting and longitudinal band steel face 5, to obtain each bracket face 6.Specifically, this reality
Apply in example bracket face 6 altogether there are six, then corresponding rib bit line also has six, six rib bit line parallel intervals arrangements, interval away from
From being theoretical away from shipbuilding process needs first to draw out latticed rib bit line figure, and the rib bit line of arbitrary neighborhood is
Theoretical away from, theoretical away from be it is determining, by by the corresponding upward upright projection of rib bit line in U-shaped circumferential surface and longitudinal band steel face
The position that can determine each bracket face 6 on 5, then can draw out corresponding bracket by determining position in U-shaped circumferential surface
Face 6.It should be noted that the determination of edge line of each bracket face 6 towards ship hull plate face 1 can be by by ship hull plate face 1
The distance of L4 is translated, to obtain the external plate face of second ship, then the intersection in the external plate face of second ship and each bracket face 6 is each elbow
Edge line of the plate face 6 towards ship hull plate face 1.To complete the Holistic modeling of U-shaped Boardside protection structure, it should be added that,
Upper arc surface 2, lower arc surface 4 are parallel with deck plane 7 in the present embodiment.
The embodiment 2 of the three-dimensional modeling method of U-shaped Boardside protection structure of the invention, exists with the distinguishing feature of embodiment 1
In: during creation in upper arc surface, setting length can be intercepted first on the intersection in deck plane and ship hull plate face
First arc segment, then does a short connecting line segment respectively at two endpoints of the first arc segment, and two short connecting line segments are flat
It row and is in the plane where deck plane, furthermore the length of two short connecting line segments is L1, then by deck plane and ship
External plate face is formed by intersection and translates along short connecting line segment, and is moved at the outer end point of each short connecting line segment, thus
To the second arc segment.The first arcwall face can be created that by the first arc segment, the second arc segment and two short connecting line segments.
The embodiment 3 of the three-dimensional modeling method of U-shaped Boardside protection structure of the invention, exists with the distinguishing feature of embodiment 1
In: during creation in lower arc surface, radius R, ship hull plate face and the deck plane that can first pass through semi-circular tube face are formed
Angle calcu-lation go out the distance between upper arc surface inward flange and lower arc surface inward flange, then by the first arc segment along hull
Outer plate surface is moved at the distance of calculating, so that it is determined that the inward flange of lower arc surface, then by the second arc segment along Vertical Square
To the distance of downward translation 2R, to obtain third segmental arc, then by the both ends of third arc segment respectively with determining lower arc
The inward flange both ends in shape face connect, so that long connecting line segment is drawn out, to complete the creation of lower arc surface.
Above embodiments essentially describe the basic principles, principal features and advantages of the present invention.The technical staff of the industry
It should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe the present invention
Principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these variation and
Improvement all fall within the protetion scope of the claimed invention.
Claims (7)
1. a kind of three-dimensional modeling method of U-shaped Boardside protection structure, it is characterised in that the following steps are included:
S1: creation deck plane (7) and ship hull plate face (1), and intercepted on the intersection of deck plane (7) and ship hull plate face (1)
Set the first arc segment (8) of length；
S2: being that one side creates upper arc surface (2) to hull outside with the first arc segment (8)；
S3: the lower arc surface (4) parallel with upper arc surface (2) is created in the lower section of upper arc surface (2)；
S4: semi-circular tube face (3), the U-shaped week to form U-shaped Boardside protection structure are created between upper arc surface (2) and lower arc surface (4)
The upper edge in face, semi-circular tube face (3) is docked with the outer edge of upper arc surface (2), the lower edge of semi-circular tube face (3) and lower arc surface
(4) outer edge docking；
S5: longitudinal band steel face (5) is drawn in the center of circle for crossing semi-circular tube face (3)；
S6: the excessively corresponding U-shaped circumferential surface of rib bit line cutting and longitudinal band steel face (5), to obtain each bracket face (6).
2. the three-dimensional modeling method of U-shaped Boardside protection structure according to claim 1, which is characterized in that in step s 2, upper arc
The creation in shape face (2) is the following steps are included: to translation distance L1 on the outside of hull and obtain the second arc for the first arc segment (8) first
Line segment (9) is then created upper arc surface (2) with the first arc segment (8) and the second arc segment (9) for two opposite side.
3. the three-dimensional modeling method of U-shaped Boardside protection structure according to claim 2, which is characterized in that in step s3, lower arc
The creation in shape face (4) is the following steps are included: by the downward translation distance 2R of the second arc segment (9) and obtain third arc segment first
(10), R is the radius of semi-circular tube face (3), is then that one side creates lower arc surface (4) with third arc segment (10).
4. the three-dimensional modeling method of U-shaped Boardside protection structure according to claim 3, which is characterized in that in step s 4, semicircle
The creation in pipe face (3) is the following steps are included: drawing radius first between the second arc segment (9) and third arc segment (10) is R
Semi arch, semi arch is then stretched into the creation semi-circular tube face along the second arc segment (9) or third arc segment (10)
(3)。
5. the three-dimensional modeling method of U-shaped Boardside protection structure according to claim 1, which is characterized in that in step s 2, upper arc
Shape face (2) and the deck plane (7) are coplanar.
6. the three-dimensional modeling method of U-shaped Boardside protection structure according to claim 1, which is characterized in that in step s 5, described
Longitudinal band steel face (5) is parallel with upper arc surface (2).
7. the three-dimensional modeling method of U-shaped Boardside protection structure according to claim 6, which is characterized in that in step s 5, longitudinal
The drafting in band steel face (5) by the center of circle of semi-circular tube face (3) the following steps are included: drawn parallel with upper arc surface (2) first
One plane, the outer mouth line of the longitudinal band steel face (5) of the intersection composition of the plane and semi-circular tube face (3), then by the plane and ship
External plate face (1) is formed by intersection to translation set distance, the interior mouth line to obtain longitudinal band steel face (5) on the outside of hull.
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Cited By (1)
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Application publication date: 20190920 Assignee: Zhanjiang Nanhai Shipbuilding High tech Service Co.,Ltd. Assignor: CSSC HUANGPU WENCHONG SHIPBUILDING Co.,Ltd. Contract record no.: X2023980048822 Denomination of invention: A 3D modeling method for a U-shaped fender structure Granted publication date: 20211130 License type: Common License Record date: 20231130 |