KR102196354B1 - Apparatus for mooring analysis processing associated with mimosa software and method thereof - Google Patents

Abstract

The present invention relates to a mooring analysis processing apparatus and a method thereof linked to a mimosa software, wherein the mooring analysis processing apparatus is linked to a MIMOSA software to receive result data from the mimosa software, and a wave by classifying the result data. , Wind, tidal intensity values for a plurality of mooring ships for each environmental condition, x-axis linear motion (surge) moving back and forth in the traveling direction of the hull, and y-axis linear motion (Sway) moving in the transverse direction of the hull A data extractor and a control unit that calculates the safety factor of the mooring ship using the mooring strength value, and calculates the degree of movement of the ship using the x-axis surge value and y-axis linear motion (Sway) value. Includes.
According to the present invention, by analyzing the results derived from the mimosa software and selectively using the analyzed results to provide mooring analysis data, there is an effect of shortening the time required for result analysis and improving the accuracy of analysis.
In addition, since the analysis result according to the present invention is provided in a table, a two-dimensional graph, and a three-dimensional graph, the readability is excellent and work efficiency can be maximized.

Description

Mooring analysis processing device linked with Mimosa software and its method {APPARATUS FOR MOORING ANALYSIS PROCESSING ASSOCIATED WITH MIMOSA SOFTWARE AND METHOD THEREOF}

The present invention relates to a mooring analysis processing apparatus and a method thereof linked to a mimosa software, and in more detail, a mimosa that analyzes the results derived through a mimosa program and selectively uses the analyzed results to provide mooring analysis data. It relates to a mooring analysis processing apparatus and a method linked with software.

Large-scale plant structures manufactured not only in the shipbuilding and offshore industries but also in the onshore plant engineering industry undergo engineering for transporting them to the site when the structure is completed in a manufacturing specialized factory. At this time, mooring analysis engineering is required.

Mooring analysis engineering is a technology for securely fixing structures, and design and analysis are performed in accordance with International Code & Standard and Guide Line.

Figure 1 is an exemplary view showing a general moored ship, Figure 1 (a) is a view showing a state in which several types of ships are moored, (b) is a drilling vessel or floating crude oil production storage base (Floating Production Storage and Off-loading: FPSO) is an exemplary diagram showing the oil extraction lines (Risers) and mooring lines, and (c) is the 12 mooring lines (CH1,...,CH12) where the ship is moored. It is a plan view showing the appearance.

As shown in Figure 1, the ship or offshore structure moored on the sea has a mooring ship connected to the hull so as to be anchored at a certain place without flowing according to a storm or tide in order to prevent aground and collision that may occur while the ship is drifting. It is supported by the anchor mounted on the sea floor through

In particular, in the case of petroleum drilling vessels or floating crude oil production and storage bases, it is important to maintain a constant position even during currents or tidal currents while extracting crude oil, as it is important to maintain a certain position even during the extraction of crude oil, as an accident can lead to dangerous situations such as a crude oil spill. Mooring analysis skills are required.

When performing such mooring analysis, Mimosa software (MIMOSA S/W) developed by DNV/GL in Norway is widely used worldwide in all fields of shipbuilding, offshore, and plant. However, not only Mimosa software, but also similar mooring analysis software, the analysis results are complex and large, and by applying API (American Petroleum Institute) Code & Standard, you can check all the codes & standards recommended by API to perform mooring analysis. There is a limitation that a possible value cannot be derived directly.

Therefore, in the process of analyzing mooring analysis results, it requires a high level of experienced and skilled manpower, and takes a lot of time and cost.

The technology behind the present invention is disclosed in Korean Patent No. 10-1321710 (announced on October 28, 2013).

The technical problem to be achieved by the present invention is to provide a mooring analysis processing device and a method thereof linked to the mimosa software that analyzes the results derived through the mimosa program and selectively uses the analyzed results to provide mooring analysis data. .

According to an embodiment of the present invention for achieving such a technical problem, a receiving unit that receives result data from the mimosa software in connection with MIMOSA software, and classifies the result data by environmental conditions including waves, wind, and tide. A data extracting unit that extracts intensity values for a plurality of mooring ships, an x-axis linear motion (surge) moving forward and backward in the moving direction of the ship, and a y-axis linear motion (Sway) moving in the lateral direction of the ship, and the mooring ship strength value And a control unit that calculates the safety factor of each mooring ship by using and calculates the degree of movement of the ship using the x-axis linear motion (surge) value and the y-axis linear motion (Sway) value.

The control unit may calculate a mooring line safety factor by dividing a minimum breaking load of the mooring line by a maximum line tension.

The control unit may calculate a total vessel offset by using the following equation.

Here, Mean is the average value, WF (Wave Frequency) is the vessel frequency due to waves, LF (Low Frequency) is the vessel frequency by the mooring system, and Surge and Sig are the average value of the upper third of the surge values, surge, max is the largest value among the surge values, Sway, Sig is the average value of the upper third of the sway values, and Sway, max is the largest value among the Sway values.

The control unit may determine a larger value among the values determined by the following equation as the maximum motion value (maximum offset: S _max ) of the ship.

Here, S is the mean value of the _mean offset vessel, _wfmax S is the maximum value of the frequency of the ship due to waves, the average value of S _wfsig vessel frequency corresponding to the higher frequency one-third of the vessel by waves, S _lfmax moored by the system The maximum vessel frequency, S _lfsig , represents the average value of the vessel frequencies corresponding to the upper third of the vessel frequencies by the mooring system.

The data extraction unit automatically extracts a plurality of initial offset values for each environmental condition or automatically extracts a plurality of mooring line information data including a mooring line number, direction, and angle, and the control unit automatically extracts At least one of a table, a two-dimensional graph, and a three-dimensional graph may be automatically generated by using the calculated data and the calculated movement degree value of the ship.

According to another embodiment of the present invention, in a mooring analysis processing method using a mooring analysis processing device linked to a mimosa software, receiving result data from the mimosa software, classifying the result data to generate waves, wind, and tide. Extracting an intensity value for a plurality of mooring vessels for each included environmental condition, an x-axis linear motion (surge) value moving back and forth in the traveling direction of the hull, and a y-axis linear motion (Sway) value moving in the transverse direction of the hull, and the And calculating the safety factor of each mooring ship using the mooring strength value, and calculating the degree of movement of the ship using the x-axis linear motion (surge) value and the y-axis linear motion (Sway) value.

According to the present invention, by analyzing the results derived from the mimosa software and selectively using the analyzed results to provide mooring analysis data, there is an effect of shortening the time required for result analysis and improving the accuracy of analysis.

In addition, since the analysis result according to the present invention is provided in a table, a two-dimensional graph, and a three-dimensional graph, the readability is excellent and work efficiency can be maximized.

1 is an exemplary view showing a general moored ship.
2 is a block diagram showing a mooring analysis processing apparatus according to an embodiment of the present invention.
3 is a flow chart showing a mooring analysis processing method using the mooring analysis processing apparatus according to an embodiment of the present invention.
4 is a diagram for explaining an exercise value extracted according to an embodiment of the present invention.
5 is a view for explaining the value of the degree of movement of the ship calculated according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are assigned to similar parts throughout the specification.

Throughout the specification, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components unless otherwise stated.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention.

First, MIMOSA software is a program for analyzing the mooring system of a mooring vessel, and is a software that provides various options such as calculation of the frequency and low frequency motion of the vessel, and mooring line tension.

In an embodiment of the present invention, a mooring analysis processing device is proposed that analyzes a result based on result data provided by the mimosa software in connection with such mimosa software and provides mooring analysis data.

2 is a block diagram showing a mooring analysis processing apparatus according to an embodiment of the present invention.

The mooring analysis processing apparatus 100 according to an embodiment of the present invention includes a receiving unit 110, a data extracting unit 120 and a control unit 130.

As shown in FIG. 2, the receiving unit 110 is linked with MIMOSA software to receive result data from the Mimosa software.

Next, the data extraction unit 120 classifies the received result data, and the intensity values for a plurality of mooring ships according to environmental conditions including waves, wind, and tide, and the x-axis linear motion (surge) value moving back and forth in the traveling direction of the hull And a y-axis linear motion (Sway) moving in the transverse direction of the hull is extracted.

In addition, when the data extraction unit 120 receives an item of result data to be collected from the user, it may extract result data of the item and store it in a separate database.

Next, the controller 130 calculates the safety factor of each mooring ship by using the mooring line strength value. In addition, the controller 130 calculates the degree of movement of the ship using the x-axis linear motion (surge) value and the y-axis linear motion (Sway) value.

Here, the degree of movement of the vessel represents the degree of distance between the center point of the vessel that has moved from the center point of the vessel to be fixed.

Hereinafter, a mooring analysis processing method for analyzing and analyzing the results of the mimic software using a mooring analysis device will be described with reference to FIGS. 3 to 5.

3 is a flow chart showing a mooring analysis processing method using a mooring analysis processing apparatus according to an embodiment of the present invention, and FIG. 4 is a view for explaining a motion value extracted according to an embodiment of the present invention, and FIG. 5 is the present invention It is a diagram for explaining the value of the degree of movement of the ship calculated according to the embodiment of.

First, the receiving unit 110 receives result data from the mimosa software (S310).

Here, the result data derived from the Mimosa software represents the result data of a general mooring analysis by applying it to various environmental conditions in text form.

At this time, various environmental conditions include conditions such as a calm sea condition, a winter storm condition, a hurricane wind condition, a hurricane wave condition, and a condition in which a eddy induced from a repeated current condition is added, and the applied environmental conditions are not limited thereto, It can be added or deleted by the user.

In addition, each result data derived by applying various environmental conditions may be displayed including the data shown in Table 1 below.

That is, as shown in Table 1, the initial offset of the ship's six-character guided motion value (Initial offset), information of the mooring ship (Pretension), the applied environmental conditions, and intact or damaged cases for at least one mooring ship (Intact &Damage case) values are derived as result data under each environmental condition.

Next, the data extraction unit 120 classifies the result data, and the intensity values for a plurality of mooring ships according to environmental conditions including waves, wind, and tide, the x-axis linear motion (surge) values moving back and forth in the traveling direction of the hull, and the hull The y-axis linear motion (Sway) moving in the transverse direction of is extracted (S320).

Referring to FIG. 4, the movement of the ship can be expressed as a six-character movement, which is represented by a linear movement (translational movement) and a rotational movement in each of the 3 axes.

In more detail, x-axis linear motion (Surge) moving back and forth in the hull travel direction, y-axis linear motion (Sway) moving in the transverse direction of the hull, linear motion (heave) moving in the vertical direction of the hull, centering on the longitudinal axis of the hull. It is expressed as x-axis rotational motion (roll), y-axis rotational motion (pitch) around the horizontal axis of the hull, and z-axis rotational motion (yaw) around the vertical axis of the hull.

Among them, the data extraction unit 120 separately extracts a y-axis linear motion (Sway) and a y-axis linear motion (Sway).

In addition, the data extractor 120 may automatically extract a plurality of initial offset values according to environmental conditions or may automatically extract a plurality of mooring line information data including a mooring line number, direction, and angle. That is, the data extracting unit 120 may separately extract and store data of an item requested by an administrator from among the result data in a large amount of text format.

Next, the control unit 130 calculates the safety factor of each mooring ship using the mooring strength value, and calculates the degree of movement of the ship using the x-axis surge value and the y-axis linear motion (Sway) value (S330). ).

First, the controller 130 may calculate a mooring line safety factor by dividing a minimum breaking load of the mooring line by a maximum mooring line tension.

At this time, when calculating the safety factor for the tension of the wire, the required items are shown in Table 2 below.

Next, the controller 130 may calculate a total vessel offset by using Equation 1.

Here, Mean is the average value, WF (Wave Frequency) is the vessel frequency due to waves, LF (Low Frequency) is the vessel frequency by the mooring system, and Surge and Sig are the average value of the upper third of the surge values, surge, max is the largest value among the surge values, Sway, Sig is the average value of the upper third of the sway values, and Sway, max is the largest value among the Sway values.

In other words, WF _surge,sig represents the frequency of the vessel due to waves when it has the average value of the upper third of the ship's motion values measured in the x-axis linear motion (surge), and WF _sway,sig is the y-axis linear motion. When it has the average value of the upper third of the ship's motion values measured in (sway), it represents the frequency of the ship due to waves. And LF _surge,max Represents the ship's frequency by the mooring system when it has the maximum value of the ship's motion values measured in the x-axis linear motion (surge), and LF _sway,max Denotes the frequency of the ship by the mooring system when it has the maximum value of the ship's motion values measured in the y-axis linear motion (sway).

In addition, the controller 130 may determine a larger value among the values determined by Equation 2 as the maximum motion value (maximum offset: S _max ) of the ship.

Here, S is the mean value of the _mean offset vessel, _wfmax S is the maximum value of the frequency of the ship due to waves, the average value of S _wfsig vessel frequency corresponding to the higher frequency one-third of the vessel by waves, S _lfmax moored by the system The maximum vessel frequency, S _lfsig , represents the average value of the vessel frequencies corresponding to the upper third of the vessel frequencies by the mooring system.

As shown in FIG. 5, the ship is affected by a wave frequency (red line) and a low frequency (green line) by the mooring system. In this way, the control unit 130 may derive the mean offset of the ship by using the frequency of movement by the wave and the frequency of the ship by the mooring system.

In addition, the control unit 130 may represent the degree of movement of the ship according to the depth of water in percent by using Equation 3.

In this way, if necessary items are automatically extracted from the result data received from the Mimosa software and the degree of movement of the ship is calculated, the control unit 130 automatically generates at least one of a table, a two-dimensional graph, and a three-dimensional graph using this. Can be generated.

As described above, according to an embodiment of the present invention, by analyzing the results derived from the mimosa software and selectively using the analyzed results to provide mooring analysis data, the time required for analysis of the results is shortened and the accuracy of the analysis is improved. It works.

In addition, since the analysis result according to the embodiment of the present invention is provided in a table, a two-dimensional graph, and a three-dimensional graph, the readability is excellent and work efficiency can be maximized.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those of ordinary skill in the art will appreciate that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

100: mooring analysis processing device 110: receiving unit
120: data extraction unit 130: control unit

Claims (10)

A receiving unit that is linked with MIMOSA software to receive result data from the Mimosa software,
By classifying the result data, intensity values for a plurality of mooring ships according to environmental conditions including waves, wind, and tide, x-axis linear motion (surge) moving back and forth in the traveling direction of the hull, and y-axis straight lines moving in the transverse direction of the hull A data extraction unit that extracts Sway values, and
And a control unit that calculates the safety factor of each mooring ship using the mooring strength value, and calculates the degree of movement of the ship using the x-axis linear motion (surge) value and the y-axis linear motion (Sway) value,
The control unit,
The mooring line safety factor is calculated by dividing the mooring line strength value (Minimum Breaking Load) by the maximum mooring line strength (Maximum line tension),
Mooring analysis processing apparatus for calculating the total vessel offset by using the following equation:

Here, Mean is the average value, WF (Wave Frequency) is the vessel frequency due to waves, LF (Low Frequency) is the vessel frequency by the mooring system, and Surge and Sig are the average value of the upper third of the surge values, surge, max is the largest value among the surge values, Sway, Sig is the average value of the upper third of the sway values, and Sway, max is the largest value among the Sway values. delete delete The method of claim 1,
The control unit,
Mooring analysis processing device that determines the largest value among the values determined by the following equation as the maximum movement value (maximum offset: S _max ) of the ship:

Here, S is the mean value of the _mean offset vessel, _wfmax S is the maximum value of the frequency of the ship due to waves, the average value of S _wfsig vessel frequency corresponding to the higher frequency one-third of the vessel by waves, S _lfmax moored by the system The maximum vessel frequency, S _lfsig , represents the average value of the vessel frequencies corresponding to the upper third of the vessel frequencies by the mooring system. The method of claim 4,
The data extraction unit,
Automatically extracting a plurality of initial offset values for each environmental condition or automatically extracting a plurality of mooring ship information data including a mooring ship number, direction, and angle,
The control unit,
A mooring analysis processing device that automatically generates at least one of a table, a two-dimensional graph, and a three-dimensional graph using the automatically extracted data and the calculated motion degree value of the ship. In the mooring analysis processing method using the mooring analysis processing device linked with the Mimosa software,
Receiving result data from the mimosa software,
By classifying the result data, intensity values for a plurality of mooring ships according to environmental conditions including waves, wind, and tide, x-axis linear motion (surge) moving back and forth in the traveling direction of the hull, and y-axis straight lines moving in the transverse direction of the hull Extracting a Sway value, and
Computing the safety factor of each mooring ship using the mooring strength value, and calculating the degree of movement of the ship using the x-axis linear motion (surge) value and the y-axis linear motion (Sway) value,
The calculating step,
The mooring line safety factor is calculated by dividing the mooring line strength value (Minimum Breaking Load) by the maximum mooring line strength (Maximum line tension),
Mooring analysis processing method for calculating the total vessel offset by using the following equation:

Here, Mean is the average value, WF (Wave Frequency) is the vessel frequency due to waves, LF (Low Frequency) is the vessel frequency by the mooring system, and Surge and Sig are the average value of the upper third of the surge values, surge, max is the largest value among the surge values, Sway, Sig is the average value of the upper third of the sway values, and Sway, max is the largest value among the Sway values. delete delete The method of claim 6,
The calculating step,
Mooring analysis processing method for determining a value having a larger value among the values determined by the following equation as the maximum movement value (maximum offset: S _max ) of the ship:

Here, S is the mean value of the _mean offset vessel, _wfmax S is the maximum value of the frequency of the ship due to waves, the average value of S _wfsig vessel frequency corresponding to the higher frequency one-third of the vessel by waves, S _lfmax moored by the system The maximum vessel frequency, S _lfsig , represents the average value of the vessel frequencies corresponding to the upper third of the vessel frequencies by the mooring system. The method of claim 9,
The extracting step,
Automatically extracting a plurality of initial offset values for each environmental condition or automatically extracting a plurality of mooring ship information data including a mooring ship number, direction, and angle,
The mooring analysis processing method further comprising the step of automatically generating at least one of a table, a two-dimensional graph, and a three-dimensional graph using the automatically extracted data and the calculated motion degree value of the ship.

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