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follow the options list when the restart option is used. This card indicates the stage at which the program is to continue and the stage at which the program is to stop (see Chapter 2). TRAN - TRANSIENT ANALYSIS This option switches off the slow axis system and stops printout of harmonic analysis at the end of a simulation run. This option should not in general be used. It is only provided as a workaround for DRIFT analysis for both drift and wave frequency motions if it diverges in the time integration.

PBIS - PRINT FORCE COMPONENTS AT EACH ITERATION STEP Prints out positions and forces on each structure at each timestep. The scope of the printout can be controlled by selections in Deck 18

PPEL - PRINT PROPERTIES OF EACH ELEMENT This option allows the user to output complete details of each element used in the body modelling. All important details of the body elements are output together with the resultant properties of the bodies. It is only applicable when running Stage 1 of the analysis.

PRCE - PRINT CARD ECHO FOR DECKS 1 to 5 This option informs the program to output the input received by the program in reading Decks 1 to 5. This is the body modelling.

The RESTART Card

Note: If this card is present a REST option must be present in the list of options on the OPTIONS card (see Section 4.0.3)

注意：必须在OPTIONS中包含REST选项后才能有这个RESTART Card 1 9 12 21

|RESTART|X| 1| 3|XXXXXX|FILENAME | | | |

| | | |可选内容，基于FILENAME.dat重启动分析 | | |

| | |结束阶段, 填写结束阶段的号码 ，如3(3个单元位置) | |

| |开始阶段, 填写开始阶段的号码，如1(3个单元位置) |

|RESTART关键字——强制使用 例如：RESTART 1 3 LastFile

(1) The start stage will depend on which stages have been previously run. Stages in the program may not be omitted. This means that the finish stage of the previous run must either be the PREVIOUS stage or a LATER stage in the program analysis.

When errors are detected, the user may start the analysis again at any of the preceding stages before the error occurred. If the previous stage was correctly performed, the user instructs the program to execute the next stage, i.e. simply to continue the analysis.

Note that as no analysis is performed within Stage 3 (except for AQWA-LINE) a run starting and finishing at Stage 3 may be used, in conjunction with the PRDL option, to print out the contents of the RESTART file on the listing file. As the RESTART file is a binary file and cannot be printed out directly, this is very useful if there is some question as to the contents.

注意：阶段3（除了AQWA-LINE以外）没有进行任何分析，所以把阶段3设置为终止阶段很有用。

See Section 2 for a description and list of RESTART stages for each program.

(3) The program will automatically copy any relevant files with this name to use for the current run. This may be .RES, .EQP and/or .POS, depending on the program which is being run. For example, using the name ABTEST1 in the AQWA-FER data file AFTEST2.DAT will result in: ABTEST1.RES being copied to AFTEST2.RES ABTEST1.EQP being copied to AFTEST2.EQP.

Note that the RDEP option is still required to read the .EQP file that has been copied.

Deck 1 COOR Deck Header

5 11 |XXXX| |XXXX|COOR| | | | |

| |COOR关键字——强制使用 | |

|用户自定义的特征码(占2个单位位置）

The COORDINATE Card

2 5 7 11 16 21 31 51 61 71

|X| | | 4| | | 54.6 | ... | | | ... - --- -- ---- ----- ----- --------- -- -- --------- --------- -------

|X|END|01| 23| 3| 10| 54.6 | ... | 4.5 | | ... - --- -- ---- ----- ----- --------- -- -- --------- --------- -------

| | | | | | | | | |

| | | | | | | (5)3个坐标的增量 (3F10.0) | | | | | |节点的3个坐标 (3F10.0) | | | | |节点号码增量(5位整数) | | | |需要产生的节点数目(5位整数) | | |起始节点号(4位整数)

| |用户自定义的特征码(占2个单位位置）

|最后一个卡片必须在在此位置写END关键字，表明Deck 1结束。 例如：

01 COOR 01NOD5

01 1 -100.000 0.000 25.000 END01

(1) This is the node number (N1) whose coordinate position is given by the values X, Y, Z (4).

(2) Leave blank (as in first card shown above) if only 1 node is to be generated. A TOTAL of N2 nodes are generated automatically if this number (N2) is greater than 1. The Nth node is generated with a node number N1(N-1)?N3 and

with coordinates X(N-1)?DX, Y(N-1)?DY, Z(N-1)?DZ

(3) Leave blank (as in first card shown above) if only one node is to be generated. If this field is left blank when generating nodes, then a value of 1 is assumed for this Nodal Increment (N3) (4) Coordinate Position (X,Y,Z) associated with node number N1 (1)

(5) Leave blank (as in first card shown above) if only 1 node is to be generated. These 3 values are referred to as DX,DY,DZ in (2)

DECK 2 ELM General Description

1. ELEMENTS - Definition

This deck defines the structural, hydrodynamic and hydrostatic modelling by superposition of ELEMENTS of different types, each of which has its own unique properties (a summary is given in Section 4.2.2 and further details may be found in Appendix H). An ELEMENT is defined by specifying 1, 2, 3 or 4 node numbers (defined in Deck 1) as is appropriate to that element. Some elements also require a material and geometric group number (defined in Decks 3 and 4 respectively).

每一个单元是用1，2，3或者4个节点定义的。某些单元也要求材料号和几何号（在步骤3和4中各自定义的材料和几何号码）

Decks 1, 3, 4 should be thought of as a table of values which are indexed by the node, material and geometric group numbers respectively, on the ELEMENT TOPOLOGY CARD (see below).

2. ELEMENTS Within a Structure

Note also that all elements within a structure are considered to be part of a rigid framework and cannot move relative to one another. However, there is no requirement for the actual physical connections to be modelled within the AQWA suite of programs.

Note: At this stage of the modelling (i.e. input of Deck 2) the program does not know how many structures the user wishes to define. Therefore the DECK SERIES TERMINATOR 'FINI' (see Section 3.5.2) must be used to indicate that no more structures will be input. However, if the maximum number of structures is input, the FINI card must be omitted, as termination of the deck series is then mandatory.

3. Number of Elements

AQWA can accept up to 12000 elements explicitly defined in Deck 2. Of these 8000 may be diffracting elements. These limits are raised to 24000/16000 elements with one symmetry card, or 48000/32000 elements with two symmetry cards. AQWA在步骤2能接受最多12000个单元。其中8000个可能是衍射单元。利用单向对称性，这些限制能提高到解决24000/16000个单元的问题。或利用两向对称性，能够提高到解决48000/32000个单元的问题。

Deck Header

5 11 |XXXX| |XXXX|ELM1| | |

| |ELM关键字，1代表单元所从属的结构特征码(占4个单元位置） |

|用户自定义特征码(占2个单位位置)

ELEMENT TOPOLOGY Card

2 5 7 11 16 21 31 41 |X| |02|QPPL| DIFF| |(30)(11,1)(71,1)(72,1)(12,1) - --- -- ---- ----- ----- -----------------------------

|X| |02|TUBE| | |(10)(11,3)(71,3)(2)(1) - --- -- ---- ----- ----- ----------------------------- |X|END|02|DISC| | |(1)(11)(71)(1) | | | | | | | | | | | | | | |

| | | | |单元群号码(I5)

| | | |(4) DIFF关键字 (绕射单元的标识符,) | | |单元类型(强制使用，A4)

| |用户自定义的特征码：区分不同的单元（A2) |最后强制使用END 关键字结束此步骤(A3) 例如：

02 ELM1

02ZLWL ( 10.000)

02QPPL DIFF (1)( 2)( 11)( 101)( 62) 1 END02

02 FINI

The ELEMENT TYPE (always four characters) provides the classification for a particular element, i.e. the number of nodes, and whether material and geometric properties are required. Valid codes for element types are QPPL, TPPL, TUBE, PMAS, PBOY, FPNT, DISC and STUB as shown below:

AQWA单元类型：QPPL,TPPL,TUBE,PMAS,PBOY,FPNT,DISC,STUB

QPPL单元 四边形面元，传递压力 4个节点组成 不需要材料和几何特性 TPPL单元 三角形面元，传递压力 3个节点组成 不需要材料和几何特性 TUBE单元 管 2个节点组成 需要补充密度和几何信息

PMAS单元 点质量单元 1个节点组成 需要补充质量和惯性距信息 PBOY单元 点浮力 1个节点组成 需要替代排开水的质量信息 FPNT单元 1个节点组成 不需要补充信息