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Hull structure weight statistics method based on three-dimensional model

A statistical method and three-dimensional model technology, applied in calculation, computer-aided design, design optimization/simulation, etc., can solve problems such as heavy workload, easy omission, time-consuming and laborious, etc., to reduce time cost, high flexibility, and improve The effect of computational precision

Pending Publication Date: 2018-11-06
CHINA SHIP DEV & DESIGN CENT
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Problems solved by technology

Since the whole process is calculated manually, the whole process is time-consuming and laborious and easy to miss
There are also some designers who use the finite element method to analyze the whole ship structure, and can obtain a more accurate weight load distribution of the hull structure, but these methods need to re-establish the hull CAE finite element model, and the workload is very large

Method used

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  • Hull structure weight statistics method based on three-dimensional model
  • Hull structure weight statistics method based on three-dimensional model
  • Hull structure weight statistics method based on three-dimensional model

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Embodiment Construction

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0028] In this embodiment, a certain fishery resources and environmental scientific survey ship is taken as an example, and its main parameters are as follows:

[0029]

[0030] The specific steps of using the inventive method to count the weight distribution of the hull structure are as follows:

[0031] S1. Establish a Boolean combined overall model of the hull structure:

[0032] Use CATIA software to call the 3D model of the whole ship structure, perform batch Boolean operations on the 3D model of the hull structure, and merge them to form the overall model of the "Boolean combined model of hull structure". Establish a model coordinate system in which the x direction is the ship length direction, the y direction...

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Abstract

The invention relates to a hull structure weight statistics method based on a three-dimensional model. The method comprises the steps of performing Boolean operation merging on all structure design part models to obtain a whole ship model; and then setting a longitudinal cutting interval according to calculation requirements, cutting the whole ship model into sections in a longitudinal direction,sequentially outputting structure weight load distribution values of the sections and performing statistics on structure weight distribution of a whole ship. According to the method, full computer operation can be realized, so that the statistical speed is increased; a weight load cutting interval can be set according to needs (according to original position-based partition or smaller partition units), so that the calculation precision is greatly improved; and in addition, the operation is carried out by utilizing an existing CATIA physical model, so that the workload of re-modeling is omitted. By use of the method, a designer can be freed from a lot of tedious design and modeling work, the working efficiency is improved, and more efficient data support is provided for fine calculation ofthe total vibration of the ship.

Description

technical field [0001] The invention relates to the technical field of ship structure design, in particular to a method for calculating the weight of a ship structure based on a three-dimensional model. Background technique [0002] The calculation of the total vibration of the hull is an important work item to ensure the safety of the ship. The load and weight statistics are one of the calculation input elements for the calculation of the total vibration of the hull. Among them, the structural weight load accounts for the largest proportion of the ship's load, and its statistical workload is also the largest, involving dozens of structural drawings. If the structural weight statistics can be calculated quickly and accurately, the calculation efficiency and accuracy of the load distribution of the whole ship will be greatly improved. [0003] In the past, in order to calculate the weight and load distribution of the structure, designers first needed to manually count tens ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20G06F2119/06Y02T90/00
Inventor 周亮凌昊万鹏罗瑞杨帆
Owner CHINA SHIP DEV & DESIGN CENT
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