BLENSURF 3D SPACE 模式

wangjing2014

范围、目的：

   SPACE模式下的BLENSURF功能用于在两个SURFACE面或SKIN表皮间生成一个高质量SURFACE面，并可以将该面的几何连续度调节至理想程度。

该功能可用于以下两方式

   快速定义一个只包括几个人机交互的高质量SURFACE结合面（建议使用默认值，这样，过程直接，没有不必要的人机交互）

l 利用自身带有的强有力的调整参数，使用RTA不断迭代就可以得到高质量的设计SURFACE面

该功能提供了如下功用：

两种连接界线的定义：

1. 通过选择已存在曲线手工定义，适用于外型为S型曲面

2. 自动定义支撑SURFACE面的边界,对于同一个SURFACE面它也可以是不同的。

   可以选择支撑SURFACE面的理想的连续顺序（G1、G2、G3）。

对于两条有限曲线，施加连接点并将其连接起来。

  可以通过调节张紧参数调整部分SURFACE面的形状，这种调整可以通过调节限制曲线的张紧度使SURFACE面更加完善，形成一个全新的以已定义规律为基础的图表。

  实时分析可以用于形状质量的检查。

和SURF2功能一样的，它可能：

   为每个表面生成一个包含其所有构成要素信息的综合历史纪录

   分析一个历史纪录就可以得到所有构成要素及形状参数列表

   通过替代要素或参数，就可以自主地改变历史纪录

   按修改后的历史纪录重新生成曲面

Function Menus      功能菜单

   3D SPACE 模式下的 BLENSURF功能菜单如下:

Menu 1        菜单1

MAN_LIM

BTGT_LIM

MODIFY        修改

Function Pop-Up Windows     弹出功能窗口

     BLENSURF功能有5个弹出窗口。

在生成模式下（MAN_LIM/BTGT_LIM）的弹出窗口选择

历史纪录  当catcmd.PROJ.FCSURF CATIA环境变量被设置为TRUE时，选择YES（默认项）就生成一个与曲面相关的历史纪录。有关该环境变量的详细情况见UNIX工作站CATIA快速参考手册UPDATED    while creating the surface, select the YES option of this switch to compute the CONNECT surface (option NO is automatically activated as soon as any connect parameter is valued or modified).更新      曲面生成后，选择YES可以计算相邻表面（若给相关参数赋值或修改任一参数值，则自动激活选项NO）。 OPTION Pop-Up Window in Modification Mode (MODIFY)     在修改模式下（修改）的弹出窗口选择           
         图25.   在修改模式下的窗口选择                      历史纪录    选择YES，则所选曲面就连上一个历史纪录；若要孤立该曲面（即断绝逻辑联系）则选No.  更新        修改曲面时，若选YES，生成一个新曲面（若任一个相关参数被修改，则自动激活选项NO）。MODE         replace (REP option) or duplicate (DEP option) the surface to be modified.模式        代替（REP选项）或者复制（DEP选项）将修改曲面。CONNECT parameters Pop-Up Window     弹出窗口相关参数
" N% {! x8 O7 u, `; Vl 在“Continuity with（连续）” 区，两个选项被分别用来对在两基础曲面间（须命名）所生成曲面施加l 率(G2)、切矢(G1)或点（G0）连续。        A CURVATURE continuous Connect with both supporting surfaces is the default initialization        默认设置为曲率连续。        曲率、切矢或点选项生成G2/G2, G2/G1, G2/G0, G1/G2, G1/G1, G1/G0, G0/G2, G0/G1、 G0/G0 连续曲面。     在“COUPLING（连结）” 区，选择“...” 命令，就可以利用两条限制曲线生成所要曲面。在“自动”模式中，连结按照国际横坐标规则自动进行。l 'Tension' is a switch.    “Tension” 是开关选项          MANUAL is the default initialization. MANUAL option allows the user to specify his own values for the shape parameters of the connect with the help of LAW command, identified by "...".默认选项为人工设置，这就允许用户利用LAW命令为形状参数赋值，识别符为“...”。If AUTO switch is on, internal default tension values will be chosen to compute the connect surface.          若是自动选项，就可以利用内部默认张紧（tension）值来计算相关曲面。l In "Tension" region, two fields allow the user to specify a numerical value (default is 1.000) defining a constant shape parameter along the limit curve. This value may be entered with the keyboard or adjusted with the slide bar.          在“Tension（张紧）” 区，有两处须用户赋以数值(默认值为1.000)来定义一个沿限制曲线的形状参数常数，该数值既可以用键盘输入，也可以通过调节滑条输入。l In "Tension region", two commands identified by "..." activate the LAW command to define a law used to specify the evolution of shape parameter along the two limit curves lying on the two supporting surfaces.          在“Tension（张紧）” 区，上述赋值处可通过 “...”命令激活一个定义公式命令来为两基础曲面上的限制曲线定义一个公式以确定其形状参数。Laws created by the LAW command are not saved in the model. Also, names of created laws are imposed: T1" (respectively "T2") for the evolutive law on the first (respectively second) limit curve.利用公式命令建立的公式不能储存。同样，所建公式名须带有：“T1”（另一个为“T2”）对应于第一条曲线。COUPLING Pop-Up Window 联结弹出窗口This window is displayed when the ... command in the COUPLING area of the CONNECT parameters Pop-Up Window is activated.      本窗口在相关参数弹出窗口中联结区的“...” 命令被激活后出现。
EXIT    once the coupling operation is finished, select this switch to return to the CONNECT parameters pop-up window.     如果联结操作结束，选这开关回到参数相关参数弹出窗口。RESET   deletes manual coupling.   删除用手操作的联结。The end-points of limit curves are symbolized by a cross. In these points, arrows are displayed to indicate the coupling orientation. If needed, you can select any arrow to reverse the coupling orientation.限制曲线的端点用十字表示，并有箭头表示联结方向，也可以选择相反方向。To perform manual coupling, simply select or indicate a point on a limit curve and connect it to another point on another limit curve.    手工联结时，将一条限制曲线上的点与另一条限制曲线上的点连接起来。Each coupling is symbolized by a section connecting two points, one on each of the limit curves. This section is provided with arrows on these points indicating the direction of the isoparametric of the connect.   每个联结就是连接限制曲线两个点，并带有指示相关等参线方向的箭头。If needed, select a section and one point on one of the limit curves to move the coupling, or press the YES key to delete the corresponding coupling.如果被需要，选择联结和限制曲线的一个端点来修改联结，或者按YES键删除联结。If needed, select an arrow of the section to modify the isoparametric. Then, select or indicate a point, or select a curve to rotate the arrow. In case of selecting a curve, the arrow and the isoparametric become tangent to the selected curve.如果被需要，选联结箭头来修改等参线。选一个点或曲线来旋转箭头，该处的箭头及等参线与所选曲线就相切。RADIUS Pop-Up Window 半径选项弹出窗口This Pop-Up Window is displayed under the BTGT_LIM item.    该弹出窗口在BTGT_LIM项下显示。
* \# t) M. R% g- o3 T" Q1 u; YThis information window indicates radius values used to create, by bitangency (see CURVE1 function, BITGT/SPHERE item), limit curves of the connect surface.该信息窗用来显示通过bitangency生成连接表面限制曲线的半径值（见CURVE1功能中的BITGT/球项）。Function Dialog MAN_LIM In this item, LIMIT CURVES (LIM CRVs) must be selected by the user.在本项中，用户必须选择限制曲线(LIM CRVs)。1. Selection of the first set of supporting geometry 第一组基本几何参数的选择。a. SEL LIM CRV 1      选择限制曲线1。b. (SEL SUR 1) only if the selected curve 1 is linked to several surfaces, if not, the surface is automatically deduced and there is no need for the user to select it.（选择曲面1）所选曲线1须同时与多个曲面有关，否则，用户所得到的曲面是无效的。2. Selection of the second set of supporting geometry第二组基本几何参数的选择。a. SEL LIM CRV 2      选择限制曲线2。   b. (SEL SUR 2) only if the selected curve 2 is linked to several surfaces, if not, the surface is automatically deduced and there is no need for the user to select it.（选择曲面2）所选曲线2须同时与多个曲面有关，否则，用户所得到的曲面是无效的3. Specify CONNECT parameters 确定相关参数An arrow is displayed on each supporting surface to define the orientation of the connect. These arrows can be inverted by selection at any moment.每个基础曲面都有箭头指示连接方向，这些箭头可以通过点击使其反向。The CONNECT parameters pop-up window is displayed, and you can specify the desired continuity order (G0, G1 or G2) with supporting geometry, the connect parameters, or the coupling between limit curves (refer to "CONNECT parameters Pop-Up Window" on page 47).相关参数弹出窗口显示，用户可以确定基本几何参数、相关参数或限制曲线连接的连续序列（G0、G1、G2）（参考第47页相关参数弹出窗口）4. Iterative COMPUTATION of the surface曲面的迭代计算    Option NO of the OPTION pop-up window is automatically activated. However, clicking on YES calculates the CONNECT surface.选择弹出窗口选项NO被自动激活。点击YES，计算相关曲面。At this point, you can modify any parameter (continuity order, connect parameter, coupling) to modify the surface. As soon as any parameter is updated, option NO of the OPTION pop-up window is activated again. You can then press the YES key to compute the new surface.这时，就可以通过修改任意参数（连续序列、相关参数、连接）来修改曲面，一旦这些参数被修改，选择弹出窗口选项NO被再次激活，点击YES，计算相关曲面。 If the NO key is pressed, the dialog loops back to interaction 2. on page 49.如果选择NO，则显示第49页第2个对话框。5. Creation of a new connect surface    生成一个新的相关曲面SEL LIM CRV 1    选择限制曲线1The dialog loops back to interaction 1. on page 49.    显示第49页第1个对话框BTGT_LIM In this item, LIMIT CURVES are defined by bitangency. 在本项中，用户利用bitangency定义限制曲线。1.  Selection of the first surface   选择第1个曲面     SEL SUR 12. Selection of the second surface  选择第2个曲面     SEL SUR 23. Definition and computation of limit curves    定义并计算限制曲线Two arrows are displayed for the position of limit curves and the orientation of the connect. These arrows can be inverted by selection at any moment.2个箭头被用来指示限制曲线的位置及连接方向，这些箭头可以通过点击使其反向。The RADIUS pop-up Window is displayed to indicate the default radius values.半径选项弹出窗口给出默认半径值。Key in one or two constant radius values, for the bitangent curves computation. If only one value is keyed in, the value is used for both curves.为计算bitangent曲线输入1个或2个半径值。若只输入1个，则两条曲线共用该值。
5 @( n  b$ h2 @0 P4 V- @8 r4. Specify CONNECT parameters    确定相关参数Dialog for this step is identical to MAN_LIM.这一步的对话框与MAN_LIM相同。 5. Iterative COMPUTATION of the surface曲面计算 Dialog for this step is identical to MAN_LIM.这一步的对话框与MAN_LIM相同。6. Creation of a new connect surface    生成新的连接曲面。SEL SUR 1  选择第1个曲面The dialog loops back to interaction 1. on page 50.显示第50页第1个对话框MODIFY Use this item to modify a connect surface linked to a history.    用该项修改连接曲面The OPTION pop-up window displays an extra MODE switch: select option DUP to work in duplicate mode, and option REP to work in replace mode.选项弹出窗口显示额外的模式开关：DUP项表示复制，REP项表示替代。1. Selection of the surface to be modified   选择要修改的曲面SEL SURFACE If a surface with history is selected, the CONNECT pop-up window, containing all the constructive parameters of the surface, is displayed.选择曲面后,一个包含曲面所有结构参数弹出窗口就显示出来。The HISTORY switch in the OPTION pop-up window has another semantic meaning: option YES is automatically activated if a surface with history has been selected. You can press NO to isolate the surface (that is delete its history), then the dialog loops back to interaction 1.弹出窗口中的历史纪录选项中有两个：若选择了一个带历史纪录的曲面，则自动激活YES选项；选择NO，则孤立该曲面（即消除其历史纪录），显示第1个对话框2． Specify CONNECT parameters   确定相关参数The dialog for this step is identical to the dialog for MAN_LIM.这一步的对话框与MAN_LIM相同。3． Iterative COMPUTATION of the surface    曲面计算The dialog for this step is identical to the dialog for MAN_LIM.这一步的对话框与MAN_LIM相同。  4． Creation of a new connect surface  SEL SURFACE The dialog loops back to interaction 1.    生成新的连接曲面。Law Command   公式命令Scope and Purpose  范围及目的 The law in BLENSURF function is used to create a LAW type element that is used in complex computations of surfaces in BLENSURF function.BLENSURF中的“公式”功能用于生成一个公式，该公式用于复杂曲面的计算。A numerical value is associated to the LAW type element at any point of a curve called spine.该公式使脊线上的任一点都对应一个数值。The parameter variation law is a function of the curvilinear abscissa of the spine. The numerical value of the law corresponds to the distance between a point on the law curve (displayed in the Graphic display panel, refer to Figure 30 on page 53) and its normal projection onto the spine.参数变化公式是一个脊线曲线坐标函数公式。公式给出的数值表示公式曲线上的点（在图形显示板上给出，参考第53页图30）与其在脊线上的正投影间的距离。This numerical value is a tension parameter.  该数值是一个张紧参数Function Panels   功能表The law in BLENSURF function in SPACE mode uses two panels.空间模式的BLENSURF中的law功能有两种表格。The first one: 第一个
0 Z- f' `! K8 }9 ?7 f5 j0 k5 Tis used to:用于l Display values (percentage of curvilinear abscissa (string ABS), law value (string VAL), law ratio or tangency (string TGT)) for the current point, and the two end points (called PT1 and PT2) of the law definition area.给出当前点、公式定义段的两个端点（PT1和PT2）的显示值（曲线横轴的百分比（ABS一行），公式值（VAL一行），公式比率或切矢（TGT一行））。l Modify law value, and law ratio.          修改公式值、公式比率l Exit the LAW function, by using the EXIT switch.用EXIT键退出LAW功能。l Display the Graphic display panel (refer to refid=lawpn02.), by using the SHOW switch.          用SHOW键显示图形显示板(参考refid=lawpn02.)l Define the law kind of variation according to the displayed icon. (see Table 1 on page 52)           根据显示的图标定义公式类别。（见第52页表1）Table 1．(Page 1of 2) Type of Law according to the Icon.表1 （共2页第1页）根据图标定义公式类型
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The second one:   第二个：
is used to display the law created.用来展示所生成的公式。This panel is displayed by selecting the SHOW item. Its display is switched off by selecting the NO-SHOW item who replaces the SHOW item in the first law panel.选择SHOW键该展示板就显示出来，在第一个公式板上选择NO-SHOW键就可以关掉展示板。
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