CN105836050A

CN105836050A - Stem post line fairing method

Info

Publication number: CN105836050A
Application number: CN201610333088.8A
Authority: CN
Inventors: 刘元斌
Original assignee: CSSC Huangpu Wenchong Shipbuilding Co Ltd
Current assignee: CSSC Huangpu Wenchong Shipbuilding Co Ltd
Priority date: 2016-05-18
Filing date: 2016-05-18
Publication date: 2016-08-10
Anticipated expiration: 2036-05-18
Also published as: CN105836050B

Abstract

The invention provides a stem post line fairing method. The stem post line fairing method comprises the following steps: (1) providing alignment water lines and fairing the alignment water lines on the water line surface; (2) connecting arc-starting points of the faired alignment water lines to make a stem post arc tangency point line, firing the stem post arc tangency point line in three directions, and taking a part of each alignment water line clamped between a ship center line and the stem post arc tangency point line as each stem post arc line; (3) equally dividing each stem post arc line into N parts, correspondingly connecting equal diversion points to make N-1 stem post arc equal diversion point lines, and fairing the N-1 stem post arc equal diversion point lines in three directions; (4) making an axial symmetry graph of the stem post arc lines and equal diversion points of the stem post arc equal diversion point line closest to the ship center line on the water line surface and the transverse section surface by taking the ship center line as a symmetry axis; and (5) connecting and replacing stem post arc line segments among the equal diversion points of the stem post arc equal diversion point line closest to the ship center line and axial symmetry points of the equal diversion points by using arc lines.

Description

A kind of first column type line smoothing method

Technical field

The present invention relates to a kind of shipform setting-out method for fairing, particularly relate to a kind of first column type line smoothing method.

Background technology

Hull design data are given without setting-out, and the shell profile only produced only in accordance with these data can go out Existing swollen flat phenomenon, its result is in its outward appearance of water surface part unsightly, and underwater portion then ship resistance increases, Then need to carry out fairing to each shell molded line, be stream according to the shell external form that the data after fairing are produced Line style, it is achieved it is specious, the purpose that ship resistance is little.For curve, fairing criterion has: two Rank smooth and continuous, do not have unnecessary flex point, Curvature varying uniformly, do not have unnecessary change to scratch a little and torsion changes Uniformly.At present for the fairing of shipform, it is by X (body lines), Y (buttocks) and Z (water Line) three groups of mutually orthogonal ship curves carry out what fairing realized.

Boats and ships head post is foremost part of ship component foremost, is also one of most important component of hull, and boats and ships are first The stringers of the main deck in portion, fore castle deck and bulwark is all to terminate at first post.Currently for hull head post Fairing of line, typically uses encryption station track especially to encrypt the method that buttocks carries out fairing at Water Plane.By Relatively anxious in hull head column type line transition, cause and choose suitable encrypted location and be difficult to determine, and have chosen improper Encryption hatching line, first column type line smoothing deviation can be caused, or even hull bow smoothness of lines is undesirable Result；Further, since hull head column type line span is relatively big, smooth vertical and horizontal encryption hatching line can not effectively pass through Wear first column type line, first column type line smoothing work surface can be caused not enough, although doing of hatching line can be increased with unrestricted Method goes to solve, but can infinitely increase setting-out fairing workload, makes laying-down the lines fairing process tend to complicated.

In order to simplify first post laying-down the lines fairing process, improve fairness and the credibility of hull bow molded line, The present invention provides a kind of first post laying-down the lines method for fairing, and the method can not only evade the uncertain of encrypted location Property, and abandoned to encrypt the hatching line first column type line smoothing method as Main Means.

Summary of the invention

A kind of first column type line smoothing method of the present invention, the method is simple, fairness good.

For achieving the above object, the present invention provides a kind of first column type line smoothing method, provides each fixed including (1) Quasi-waterline also described respectively fixes waterline Water Plane fairing is good；(2) connect good described of fairing and respectively fix waterline Arcing point and make a first post arc point of contact line, and 3D fairing good described first post arc point of contact line, described respectively Fixing the part that waterline is clipped between hull centrage and described first post arc point of contact line is each first post camber line；(3)N The each described each first post camber line of equal portions, connects each equal portions point accordingly and makes N-1 bar head post arc equal portions dotted line, and First post arc equal portions dotted line described in the good N-1 bar of 3D fairing；(4) in described Water Plane and cross section, with described ship Body centrage is that axis of symmetry makees described each first post camber line and the described first post arc etc. near described hull centrage The zhou duicheng tuxing of the described equal portions point on part dotted line；And (5) connect replacement near described with circular arc line The described head between described equal portions point and axial symmetry point thereof on the described first post arc equal portions dotted line of hull centrage Post arc.

It is preferred that described waterline of respectively fixing includes designed water line, main deck sideline, fore castle deck sideline and the side of a ship Wall top line.

It is preferred that described step (2) also includes with the good described waterline of respectively fixing of fairing as reference, if fairing Solid carbon dioxide line.

It is preferred that described waterline includes 3500WL, 4500WL, 5000WL, 6000WL, 7000WL And 8000WL.

It is preferred that each described each first post camber line is by 4 equal portions.

Compared with prior art, the present invention, by simple geometrograph, obtains one group and suits most first post and indulge The space curve of cross curvature, and in this, as the main carriers of fairing head column type line, in order to substitute for head The first column type line smoothing work that post arc incoherent encryption hatching line method are carried out, makes whole process all in the most negative Under the fairing state of lotus point, make fairing work compact neat, single-minded effectively.

Accompanying drawing explanation

Fig. 1 is the first schematic diagram of head column type line smoothing method of the present invention；

Fig. 2 is the second schematic diagram of head column type line smoothing method of the present invention；

Fig. 3 is the Water Plane figure of certain type ship bow part of the embodiment of the present invention；

Fig. 4 is side view and the profile of certain type ship bow part of the embodiment of the present invention.

Detailed description of the invention

Illustrate the several different most preferred embodiment of the present invention below with reference to the accompanying drawings, wherein identical in different figures Label represents identical parts.Below in conjunction with the accompanying drawings, embodiments of the invention are elaborated.

The present invention provides a kind of first column type line smoothing method, and the method is simple, fairness good.

Fig. 1～2 is the schematic diagram of head column type line smoothing method of the present invention, and Fig. 3～4 is the axonometric projection of certain type ship bow part, This head column type line smoothing method includes:

(1) waterline is respectively fixed in offer, respectively fixes waterline and includes designed water line, main deck sideline, fore castle deck Sideline and bulwark top line, can provide different waterlines of fixing in other ship types certainly, and good in Water Plane fairing Respectively fix waterline；

(2) connect the good arcing point 9 respectively fixing waterline of fairing and make a first post arc point of contact line 2, and three To fairing good first post arc point of contact line 2, respectively fix the portion that waterline is clipped between hull centrage and first post arc point of contact line It is divided into each first post camber line 7；With first post arc point of contact line 2 for demarcating, with fairing good respectively fix waterline as reference, The some waterlines of fairing, in the present embodiment, waterline include 3500WL, 4500WL, 5000WL, 6000WL, 7000WL and 8000WL；Wherein, respectively fixing waterline is curve, and when close to bow, curvature is undergone mutation, The point then curvature undergone mutation becomes arcing point 9；Certainly, in other embodiments, waterline can be selected else, as Each waterline of Fig. 3～4 display includes 6500WL, 8000WL, 9000WL, 10000WL, 10500WL, And 11000WL；

(3) each each first post camber line 7 of N equal portions and each waterline, connect each equal portions point accordingly and make N-1 bar First post arc equal portions dotted line, and 3D fairing good N-1 bar head post arc equal portions dotted line；In the present embodiment, each respectively First post camber line and waterline, by 4 equal portions, obtain first post arc 1/4 equal portions dotted line 4, first post arc 1/2 equal portions dotted line 5, with And head post arc 3/4 equal portions dotted line 6, certainly, in other embodiments, N other different numbers desirable；

(4) in Water Plane and cross section, with hull center, 3 for axis of symmetry make each first post camber line 7, each waterline and The zhou duicheng tuxing of the equal portions point on first post arc 1/4 equal portions line 4；And

(5) connect between equal portions point and the axial symmetry point thereof replaced on first post arc 1/4 equal portions line 4 with circular arc line 8 First post arc.

Using the axonometric projection of above-mentioned method for fairing fairing type ship bow part as shown in figs. 34, wherein, label 1 is First post contour line.The present invention, by simple geometrograph, obtains one group and suits most first post vertically and horizontally curvature Space curve, and in this, as the main carriers of fairing head column type line, in order to substitute for first post arc not The first column type line smoothing work that coherent encryption hatching line method is carried out, makes whole process all in the light of full load point Along under state, make fairing work compact neat, single-minded effectively.

Those of ordinary skill in the field it is understood that the discussion of any of the above embodiment is exemplary only, It is not intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Think of in the present invention Under road, can also be combined between the technical characteristic in above example or different embodiment, and exist Other change of the many of the different aspect of the present invention as above, in order to concisely they carry in details Supply.Therefore, all within the spirit and principles in the present invention, any omission of being made, amendment, equivalent, Improve, should be included within the scope of the present invention.

Claims

1. a first column type line smoothing method, it is characterised in that including:

(1) provide and respectively fix waterline and described respectively fix waterline Water Plane fairing is good；

(2) connect the good described arcing point respectively fixing waterline of fairing and make a first post arc point of contact line, and 3D fairing good described first post arc point of contact line, described waterline of respectively fixing is clipped in hull centrage and described first post arc Part between the line of point of contact is each first post camber line；

(3) each described each first post camber line of N equal portions, connects each equal portions point accordingly and makes N-1 bar head post arc Equal portions dotted line, and first post arc equal portions dotted line described in the good N-1 bar of 3D fairing；

(4) in described Water Plane and cross section, described each first post arc is made with described hull centrage for axis of symmetry Line and the axial symmetry figure near the described equal portions point on the described first post arc equal portions dotted line of described hull centrage Shape；And

(5) replace on the described first post arc equal portions dotted line of described hull centrage with circular arc line connection Described first post arc between described equal portions point and axial symmetry point thereof.

First column type line smoothing method the most according to claim 1, it is characterised in that described respectively fix water Line includes designed water line, main deck sideline, fore castle deck sideline and bulwark top line.

First column type line smoothing method the most according to claim 1, it is characterised in that described step (2) Also include with the good described waterline of respectively fixing of fairing as reference, the some waterlines of fairing.

First column type line smoothing method the most according to claim 3, it is characterised in that described waterline includes 3500WL, 4500WL, 5000WL, 6000WL, 7000WL and 8000WL.

First column type line smoothing method the most according to claim 1, it is characterised in that each described each head Post camber line is by 4 equal portions.