CN110348120B

CN110348120B - Automatic weld leg height calculation method based on modeling software

Info

Publication number: CN110348120B
Application number: CN201910623099.3A
Authority: CN
Inventors: 杨雪莲; 李思远; 韩冰; 张宇彤
Original assignee: Shanghai Waigaoqiao Shipbuilding Co Ltd
Current assignee: Shanghai Waigaoqiao Shipbuilding Co Ltd
Priority date: 2019-07-11
Filing date: 2019-07-11
Publication date: 2023-04-07
Anticipated expiration: 2039-07-11
Also published as: CN110348120A

Abstract

The invention discloses a method for automatically calculating the height of a welding leg based on modeling software, which comprises the following steps: replacing a logic tree which represents welding business logic in modeling software into a logic matrix according to a welding rule; the horizontal axis of the logic matrix represents key values of various logics, and the vertical axis represents various welding grades and corresponding parts types; respectively combining key values of various logics of a transverse axis in a logic matrix into a character string, and converting the logic matrix into a mapping matrix of each character string and each welding grade; and traversing the set of parts to be welded, and calculating the welding grade of each part to be welded, which corresponds to the height of the welding leg, through a mapping matrix according to each logic of each part to be welded, which influences the welding service. And the automatic calculation of the heights of various welding feet close to 100 percent can be realized.

Description

Automatic weld leg height calculation method based on modeling software

Technical Field

The invention relates to a method for calculating the height of a welding leg based on modeling software.

Background

Various types of software for ship modeling, such as: tribon, smart3D, AM and Catia can all partially realize automatic calculation of the height of the weld leg in principle. Because the input conditions for the welding calculation are all available, they include: the length of the contact surface, the compartment in which the contact surface is located, and the basic properties of the interconnecting members. Therefore, simple configuration files such as AM, catia, smart3D help designers to implement automatic calculation of the height of the solder tail. However, in practical application of the shipyard, manual calculation is mainly adopted, and the configuration files only cover automatic calculation of the height of the weld leg with simple logic judgment, so that great limitation exists. In fact, automatic calculation of the fillet height is very complex, and the challenges include the following:

1) Complexity of the logical hierarchy. For the logic to be judged necessarily, the nesting level is deep. For example, in the same way, for welding a bulkhead and a section, it is necessary to determine the properties of the bulkhead, such as the tightness, the thickness, the material, the specification, the material, the end cut, and the like. And the combination of their locations, as if they were in the upper building, the indoor and outdoor welds are different; also indoors, different welding modes in a dry-wet area are different.

2) Uncertainty of logical level. Not all logic is necessarily involved in the fillet height calculation. For example, on a luxury cruise ship, only the non-flanged side of the channel bulkhead on 1 to 7 decks needs to be judged as 4mm thick, and if so, it needs to be judged as intermittent welding. But the tank bulkheads of the other decks do not need to calculate this condition. There are many similar special logics.

3) The influence of the particular part. In hull structural design, portions of the high stress area fillets require reinforcement. Such as the butt weld of adjoining areas of a beam and column structure, require special reinforcement. The judgment of the reinforcement is independent of the welding parts, and the properties of the two parts which participate in the mutual welding cannot be directly searched to know whether the reinforcement is needed.

Disclosure of Invention

The invention aims to provide a method for automatically calculating the height of a welding leg based on modeling software, which can realize the automatic calculation of the heights of various welding legs close to 100 percent.

The technical scheme for realizing the purpose is as follows:

a method for automatically calculating the height of a welding leg based on modeling software comprises the following steps:

s1, replacing a logic tree which represents welding business logic in modeling software into a logic matrix according to a welding rule; the horizontal axis of the logic matrix represents key values of various logics, and the vertical axis represents various welding grades and corresponding parts types;

s2, respectively combining key values of various logics of a transverse shaft in a logic matrix into a character string, and converting the logic matrix into a mapping matrix of each character string and each welding grade;

and S3, traversing the set of parts to be welded, and calculating the welding grade of each part to be welded, which corresponds to the height of the welding leg, through a mapping matrix according to each logic of each part to be welded, which influences the welding service.

Preferably, the method further comprises the following steps: and S4, traversing the set of parts to be welded again, finding out specific parts which can influence the welding calculation of other parts, obtaining the logic of the specific parts on the influenced parts, and calculating the welding grade of the influenced parts again through the mapping matrix.

Preferably, in the step S1 and the step S2, the welding business logic is divided into a necessary logic and an optional logic;

firstly, constructing a logic matrix of necessary logic, and constructing a corresponding first mapping matrix;

determining optional logics participating in calculation, and combining the optional logics into the first mapping matrix to form a second mapping matrix;

and determining optional logic which does not participate in calculation, restoring the key value ANY into the key value TURE and the key value FALSE, and combining the key value TURE and the key value FALSE with the second mapping matrix to form a final mapping matrix.

Preferably, the modeling software is: tribon, smart3D, AM or Catia.

The invention has the beneficial effects that: the invention realizes the automatic calculation of the height of various welding feet which is close to 100 percent, replaces the manual calculation, and has the accuracy rate of the height of the welding feet which is automatically calculated to be more than 90 percent. Meanwhile, compared with the time for defining the welding leg in one segment in the prior art, including the verification, which is 2 hours, the total time of the calculation and the manual verification is basically about 20 minutes, and the efficiency is improved by 6 times. More importantly, the previous definition of the height of the leg based on the drawing cannot accurately extract the amount of the welding flux of the segment. The method can accurately calculate the segmented welding flux amount, and is greatly helpful for the lean management of the field.

Drawings

FIG. 1 is a flow chart of a method for automatic calculation of fillet height based on modeling software according to the present invention;

FIG. 2 is a schematic flow chart of step S4 in the present invention.

Detailed Description

The invention will be further explained with reference to the drawings.

Referring to fig. 1, the method for automatically calculating the height of the fillet based on the modeling software of the present invention includes the following steps:

and S1, replacing a logic tree which represents welding business logic in modeling software into a logic matrix according to a welding rule. The horizontal axis of the logic matrix represents the key values of each logic, and the vertical axis represents each welding grade and each corresponding part type.

And S2, respectively combining key values of various logics in a transverse axis in the logic matrix into a character string, and converting the logic matrix into a mapping matrix of each character string and each welding grade. The auxiliary program of the modeling software is designed to realize, so that the workload of the code is greatly simplified, and the maintainability of the code is improved. The complexity of logic level is effectively reduced, good program expansibility can be obtained, and a user can adjust welding rules by configuring a logic matrix instead of maintaining complex codes to realize automatic welding. In this embodiment, the modeling software is: tribon, smart3D, AM or Catia.

Solving the problem of uncertainty of logic level, in step S1 and step S2, dividing the welding business logic into a required logic (required) and an optional logic (optional), and then:

1) Firstly, a logic matrix of necessary logic is constructed, as shown in the following table 1:

type of part	L _required 1	L _required 2	…	L _required n	Grade of welding
						Type of part 1	TRUE	TRUE	…	TRUE	A
Type of part 1	FALSE	FALSE	…	FALSE	B
						Part type 2	TRUE	TRUE	…	TRUE	C
Part type 2	TRUE	FALSE	…	TRUE	D
						Type of part 2	FALSE	TRUE	…	FALSE	D is interrupted
…	…	…	…	…	…

TABLE 1

The logical matrix is converted into a first mapping matrix for the string, as shown in table 2 below:

TABLE 2

S _ori ＝{L _required 1+L _required 2+…+L _required N}。

2) Determining optional logic participating in the calculation, the optional logic comprising three key values: TRUE, FALSE, and ANY. When the optional logic participates in the calculation, the key value is TRUE or FALSE. Its direct abstraction is understood to be necessarily logical, incorporated into the first mapping matrix, as follows:

S _ori ’＝{L1 _optional +L1 _optional +…+Ln _optional }+S _ori ；

form a second mapping matrix, as shown in table 3 below:

S _ori ’	grade of welding
		S1 _ori ’	A
S2 _ori ’	B
		S3 _ori ’	C
S4 _ori ’	D
		S5 _ori ’	D is interrupted

TABLE 3

3) Determining the optional logic which does not participate in the calculation, restoring the key value ANY to the key values fire and FALSE, and combining the key values FALSE and FALSE with the second mapping matrix as follows:

S _Logic ＝ANY·S _ori ’＝(TRUE+S _ori ’)AND(FALE+S _ori ’)

form the final mapping matrix, as table 4 below:

S _Logic	Conclution
		S1 _Logic(true)	A
S2 _Logic(true)	B
		S3 _Logic(true)	C
S4 _Logic(true)	D
		S5 _Logic(true)	d is interrupted
S1 _Logic(false)	A
		S2 _Logic(false)	B
S3 _Logic(false)	C
		S4 _Logic(false)	D
S5 _Logic(false)	D is interrupted

TABLE 4

And S3, traversing the set of parts to be welded, and calculating the welding grade of each part to be welded, which corresponds to the height of the welding leg, through a mapping matrix according to each logic of each part to be welded, which influences the welding service. Namely: and (3) logically representing factors influencing welding calculation by the welding service, integrating various logics into character strings by utilizing an auxiliary program of designed modeling software, comparing the character strings in the mapping matrix, and mapping the welding grade of each part to be welded.

And S4, traversing the set of the parts to be welded again, finding out specific parts which can influence the welding calculation of other parts, obtaining the logics of the specific parts on the influenced parts, and calculating the welding grade of the influenced parts again through the mapping matrix. As shown in fig. 2. For a particular part, the conditions that affect the weld calculation are not only its own properties, but also include other parts. Therefore, all factors affecting the welding calculation cannot be obtained according to the welding analysis flow from the parts to the connection relation thereof. To this end, in addition to the just forward computational flow, the present invention also introduces a checking mechanism. After the program has calculated all the fillet welds, the program will go through the part set that needs to calculate the weld leg again, and find out the specific parts that will affect the welding calculation of other parts, such as the end stop enlarging part, the beam, the base part, and so on. Then, based on these part characteristics, the parts that may be affected by the fillet calculation are recalculated.

The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.

Claims

1. A method for automatically calculating the height of a welding leg based on modeling software is characterized by comprising the following steps:

s2, respectively combining key values of various logics of a transverse axis in a logic matrix into a character string, and converting the logic matrix into a mapping matrix of each character string and each welding grade;

s3, traversing the set of parts to be welded, and calculating the welding grade of each part to be welded, which corresponds to the height of the welding leg, through a mapping matrix according to each logic of each part to be welded, which influences the welding service;

in the step S1 and the step S2, the welding business logic is divided into necessary logic and optional logic;

2. The method for automatically calculating the height of the weld leg based on modeling software according to claim 1, further comprising: and S4, traversing the set of parts to be welded again, finding out specific parts which can influence the welding calculation of other parts, obtaining the logic of the specific parts on the influenced parts, and calculating the welding grade of the influenced parts again through the mapping matrix.

3. The method for automatically calculating the height of the fillet based on the modeling software as claimed in claim 1, wherein the modeling software is: tribon, smart3D, AM or Catia.