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FRP玻璃鋼復合材料論壇

標題: RTM仿真軟件RTM-WORX技術白皮書 [打印本頁]

作者: caefinder 時間: 2011-11-26 14:32
標題: RTM仿真軟件RTM-WORX技術白皮書
2011年11月17日 | 標簽:
軟件功能和技術資料

RTM-WORX是一款先進的樹脂模注工藝仿真軟件，廣泛用來模擬RTM、VIP等復合材料工藝過程中樹脂的流動情況，也可以用來模擬壓力驅動下多孔介質中的一般流動過程。
該文檔介紹了RTM-WORX軟件的基本功能和技術信息，如想獲得此軟件的更詳細信息，請參考軟件的中文地址：http://www.caeda.com.cn 。

簡介

RTM-WORX能高效、方便地利用有限元法（FEM）和控制體積法（CVM）求解多孔介質中樹脂流動過程的物理方程，軟件的設計出發點就是為那些不夠精通有限元代碼，但了解RTM或真空灌注工藝（VIP）的行業專家提供零件或工藝的優化工具。

RTM-WORX的軟件設計非常強調高效性、可靠性和穩定性。軟件的數值計算精度非常高，即使在最壞的情況下（如壓力成對數下降的點注射），也只需150左右的單元就能將誤差降到1%以下。RTM-WORX軟件受單元形狀和尺寸的影響很小，軟件對所有必需的數據都提供了合理的缺省值，即使輸入值出現偏差，模擬過程仍能成功地運行。由于FEM或CVM采用相同的離散度，保證了任何情況下計算過程的收斂和壓力計算的準確，以及樹脂流動前峰的確定性。同樣的方法也適用于非等溫反應模塊，由于用戶可以完全控制計算的速度和精度，其穩定性額是不言而喻的。

RTM-WORX計算速度非常快。在目前主流的硬件配置下，對于一個2000到4000個單元的模型，計算時間還不足1分鐘。對非等溫反應模型，當采用全3D速度時也只需約兩倍長時間，而且能快速給出溫度和固化等信息。
——節選可以索取

作者: caefinder 時間: 2012-6-27 14:49
鋪層設計分析培訓講義分享

作者: caefinder 時間: 2012-7-19 17:02
熱壓模擬

作者: xmfw 時間: 2012-11-14 19:42

賣糕的,不懂呵

作者: caefinder 時間: 2012-11-15 09:24
復合材料零部件設計有專門軟件計算,可以發郵件免費測試。

作者: caefinder 時間: 2013-2-22 10:11
The new ESAComp 4.4.1 version for MS Windows and Linux platforms is now available for customers with a maintenance contract valid untill December 2012.

If you are currently using ESAComp 4.4.0, we highly recommend to upgrade to version 4.4.1, as in version 4.4.0 natural frequencies in panel and cylinder analyses were shown with wrong units (for details see release notes below).

In case you are still working with an older version of ESAComp, we also recommend to upgrade, so that you can benefit from the additional features and material database updates.

作者: caefinder 時間: 2014-2-7 09:54
標題: 回 xmfw 的帖子

xmfw:賣糕的,不懂呵 (2012-11-14 07:42 PM)

想學就懂

作者: caefinder 時間: 2014-5-19 15:05
標題: 回 caefinder 的帖子

caefinder:The new ESAComp 4.4.1 version for MS Windows and Linux platforms is now available for customers with a maintenance contract valid untill December 2012.

If you are currently using ESAComp 4.4.0, we highly recommend to upgrade to version 4.4.1, as in version 4. .. (2013-02-22 10:11 AM)

中文：開迪數字仿真科技有限公司

作者: 技術人員 時間: 2015-3-5 11:22
價格多少

作者: caefinder 時間: 2015-3-6 09:17
請發郵件詳細咨詢，可申請免費試用：caeda@vip.sina.com ，務必實名，您懂的。

作者: caefinder 時間: 2015-5-20 09:30
3D新版本發布
Most important to know right now:
** You define a solid region by it's boundary surfaces (like you define
a surface by a closed boundary loop of curves).
** 3D permeability is defined as follows:
- The vector [r3x,r3y,r3z] is used to define the k33 direction, which is
normal to the plane in which the reinforcement lies, e.g. it is the
thickness direction. When this plane has been established, vector
[r1x,r1y,r1z] is projected on it for the k11 direction. The direction of
k22 is perpendicular to k11 in the plane defined by [r3x,r3y,r3z].
** When you define a region, a 3D tetrahedral mesh is automatically
generated, but *not* optimized. The mesh parameter 'e/R' defines the
edge/radius ratio of tets that will be split by inserting an additional
vertex. Use e/R = 0 for no internal vertices (e.g. the tetrahedral mesh
uses only vertices on the boundary surfaces) and e/R = 1 for an
isotropic mesh. Sometimes the mesh generator fails. You can try to fix
this by playing with the Min and Max parameters, and using the [Bounding
box] option. In general, the mesh generator will always succeed to
generate a mesh unless there is a huge difference between the edge size
in your wireframe and/or very small angles.
** Before you run the simulation, optimize the mesh using the [Clean]
button in the mesh generator panel. If you do not do this, the solver
will run much slower and may even terminate before filling is completed.
In any case, expect trouble when the mesh contains slivers: elements
with 0% quality (use the shaded plot 'Element quality' option and shrink
tets to see them). A sliver typically looks like a flat rectangle and
has very small (almost zero) volume but no short edges. On such
elements, the pressure gradient can not be accurately calculated by
linear interpolation in sliver thickness direction.
You have the following parameters and options:
- cN = maximum number of iterations the optimizer will run
- qMin = worst acceptable element (100% is perfect, 0% is extremely bad)
- qEps = measure for improvement of the mesh, independent of the worst
element. This defines what the optimizer will consider an improvement,
even if the worst tet can not be improved.
- [Add points] button: controls whether the optimizer is allowed to add
more points in the region. You can turn this off if you want to have a
coarse tetrahedral mesh combined with a fine(r) surface mesh. However,
it reduces the possibilities for the optimizer to eliminate bad tets.
** Combining runners and shell elements with 3D tets is possible, but
you have to be careful: combination of a single runner with tets (e.g.
using a curve that is an edge of a region) may not produce the results
you want, similar to using an injection point on a surface. Make sure
you define dimensions properly, by also using boundary surfaces to
define injection channels. Tip: you can model the mesh using the top
surface of a region, you don't need to define separate regions.

作者: caefinder 時間: 2015-6-25 09:16
真3D版推出了！

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