Statistical method for weight distribution of ship equipment based on 3D model

A technology of equipment weight and 3D model, which is applied in instruments, geometric CAD, image data processing, etc., can solve the problems of low calculation accuracy, easy omission, long time period, etc., and achieve the effect of improving processing efficiency and computing efficiency.

Active Publication Date: 2022-07-01
CHINA SHIP DEV & DESIGN CENT
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The entire workflow mainly relies on the manual work of the designer, which has a long time period, low calculation accuracy, and is easy to miss

Method used

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  • Statistical method for weight distribution of ship equipment based on 3D model
  • Statistical method for weight distribution of ship equipment based on 3D model
  • Statistical method for weight distribution of ship equipment based on 3D model

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Embodiment Construction

[0028] In order to have a clearer understanding of the technical features, objects and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0029] Taking the equipment of a certain cabin section as an example, there are 26 pieces of equipment in the cabin section. The method for statistic of the weight distribution of ship equipment based on the three-dimensional model proposed by the present invention includes the following steps:

[0030] S1. Based on the equipment design model or equipment design drawings, determine the equipment weight M and the equipment longitudinal length L, and then construct the equal-density equipment model of each equipment according to formula (1):

[0031]

[0032] In the formula, S is the cross-sectional area of ​​the constant density equipment model, ρ is the uniform equipment density of the whole ship equipment, M is the weight of a c...

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Abstract

The invention relates to a three-dimensional model-based statistical method for weight distribution of ship equipment. S1. constructing an iso-density equipment model of each equipment based on the equipment model, and S2. obtaining an overall equipment model by Boolean merging of all iso-density equipment models of the whole ship; S3. Segment the overall model of the equipment in the direction of the length of the ship according to the accuracy requirements; S4. Batch output the weight distribution value and position information of each segment; S5. Draw the weight distribution value and position information into a weight distribution curve. The invention converts the weight distribution problem into an equivalent volume distribution problem by equivalently converting the equipment into a homogeneous regular body with equal weight and the same longitudinal distribution length, effectively realizes statistical calculation by relying on the three-dimensional model, and realizes the automation of longitudinal weight distribution of ship equipment Calculation: The calculation data source comes from the design model, and there is no statistical omission. The method of batch Boolean merge is used to merge hundreds of equipment models into one object for processing, which greatly improves the processing efficiency.

Description

technical field [0001] The invention relates to the technical field of overall design of ships, in particular to a method for statistical distribution of ship equipment weight based on a three-dimensional model. Background technique [0002] The calculation of the total hull vibration is an important work item to ensure the safety of the ship. The longitudinal distribution of the whole ship load is one of the input elements for the calculation of the total hull vibration. Among them, the ship equipment load is one of the important components of the whole ship's load weight. How to quickly and accurately obtain the weight distribution of ship equipment is a practical problem for designers. [0003] In the past, in order to obtain the weight distribution of ship equipment, designers need to first carry out itemized weight statistics for each equipment according to the design drawings, and then according to the layout, the weights are approximately equally distributed along th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/15G06T19/20
CPCG06T19/20G06F30/15
Inventor 凌昊肖伟柏铁朝周亮肖泥土
Owner CHINA SHIP DEV & DESIGN CENT
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