左手定则判断TRIBON加强筋的起点和终点

虬髯客

不错,和我总结的差不多,多谢楼主

John

总结：厚度在方向的左边

MIGHT

不用了 这个规则不是100正确的

M3已经解决了这个问题 有方向箭头

变量

对加强筋现在有关键字MSI=AFT/FOR/PS/SB/TOP/BOT,就象定义板厚一样(注:在M3SP5MU2中有效)

1121781

我就是这个方向问题能不好

蒙啊 ~~~~~

ak47

在TRIBON系统中默认的视图朝向是
横剖面从艏往艉看
纵剖面从右往左看
Z向面从上往下看
在TRIBON默认朝向视图中使用左手定则判断加强筋的起点和终点的方法是:
手掌平伸，大拇指与平伸四指垂直，手背朝图面，手心朝自己，
四指朝向为加强筋的走向
大拇指朝向为加强筋的厚度方向（球头朝向）

在不少企业把TRIBON的横剖面视图朝向设为从艉向艏的习惯视向
在判断横剖面时相应把手心朝向翻转
即手心朝图面，手背朝自己

大家可以试试

悠悠花开

我顶

davy_liao

条条大道通罗马，不管什么技巧合总结，只要正确就OK

lzx_12345

在TRIBON系统中默认的视图朝向是
横剖面从艏往艉看
纵剖面从右往左看
Z向面从上往下看


如何去改变？？？？？

lzx_12345

在TRIBON系统中默认的视图朝向是
横剖面从艏往艉看
纵剖面从右往左看
Z向面从上往下看


如何去改变？？？？？

一江春水

楼上的很有钻研精神,这个问题我一直都没想过.

All the parts or objects of a ship or any other product described in Tribon are positioned in a co-ordinate system. A co-ordinate system may be local and positioned in other co-ordinate systems in hierarchies with any level of depth. However, in the end all local co-ordinate systems must be positioned relative to one global co-ordinate system that is located in the product in a well defined way.

In the case of the Tribon Hull application the product is normally a ship or a ship like vessel. In that case there are rather strict rules for how the global co-ordinate system is located (see the figure below).

The origin should be placed in the aft end of the ship, preferably in the bottom and in the symmetry plane (the Centre Line plane (=CL)). It is a good practice shown in the figure (but not necessary!) to locate the origin aft of the ship so that all x-co-ordinates are positive. Another alternative is to place the origin at the aft perpendicular.
The x-axis should be directed in the forward direction.
The y-axis should be in the direction against portside.
The z-axis should be in the upward direction (co-ordinates may be negative)
Planar parts of the hull model (e.g. plane panels, brackets, etc.) are described in the uv-plane of local co-ordinate systems (uvw). These co-ordinate systems may be located quite arbitrarily in the ship co-ordinate system (xyz) of the ship. However, when the uv-plane coincides with a principal plane of the xyz-system the local co-ordinate system is as a standard positioned as shown in the figure below. In these cases the u- and v-co-ordinates will be identical to one of the x-, y- or z-co-ordinates which may be convenient. However, this is a matter of convenience and is in no way compulsory.

The co-ordinates are (in the Tribon Hull data banks) always expressed in millimetres.

[ 本帖最后由 一江春水 于 2007-8-26 13:39 编辑 ]