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RTM仿真软件RTM-WORX技术白皮书

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发表于 2011-11-22 09:05:06 | 显示全部楼层 |阅读模式

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RTM仿真软件RTM-WORX技术白皮书
2011年11月17日 | 标签:
软件功能和技术资料

RTM-WORX是一款先进的树脂模注工艺仿真软件,广泛用来模拟RTM、VIP等复合材料工艺过程中树脂的流动情况,也可以用来模拟压力驱动下多孔介质中的一般流动过程。
该文档介绍了RTM-WORX软件的基本功能和技术信息,如想获得此软件的更详细信息,请参考软件的中文地址:http://www.caeda.com.cn 。

简 介

RTM-WORX能高效、方便地利用有限元法(FEM)和控制体积法(CVM)求解多孔介质中树脂流动过程的物理方程,软件的设计出发点就是为那些不够精通有限元代码,但了解RTM或真空灌注工艺(VIP)的行业专家提供零件或工艺的优化工具。

RTM-WORX的软件设计非常强调高效性、可靠性和稳定性。软件的数值计算精度非常高,即使在最坏的情况下(如压力成对数下降的点注射),也只需150左右的单元就能将误差降到1%以下。RTM-WORX软件受单元形状和尺寸的影响很小,软件对所有必需的数据都提供了合理的缺省值,即使输入值出现偏差,模拟过程仍能成功地运行。由于FEM或CVM采用相同的离散度,保证了任何情况下计算过程的收敛和压力计算的准确,以及树脂流动前峰的确定性。同样的方法也适用于非等温反应模块,由于用户可以完全控制计算的速度和精度,其稳定性额是不言而喻的。

RTM-WORX计算速度非常快。在目前主流的硬件配置下,对于一个2000到4000个单元的模型,计算时间还不足1分钟。对非等温反应模型,当采用全3D速度时也只需约两倍长时间,而且能快速给出温度和固化等信息。
——节选可以索取

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发表于 2011-11-22 10:30:16 | 显示全部楼层
呵呵,介绍不错,但不上传给大家使用呢!
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发表于 2011-12-14 00:35:28 | 显示全部楼层
学习 学习
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发表于 2011-12-22 12:48:00 | 显示全部楼层
看的人少,回一下












                               
登录/注册后可看大图

广州搬家公司 ak168.cn 广州搬家公司
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 楼主| 发表于 2011-12-29 09:33:43 | 显示全部楼层
support

RTM设计咨询服务050317.pdf

252.08 KB, 下载次数: 17, 下载积分: 国防币 -1

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 楼主| 发表于 2012-1-17 11:18:57 | 显示全部楼层
分享

AnsysESP复合材料.rar

932.64 KB, 下载次数: 20, 下载积分: 国防币 -1

Pre-Post Processing复合材料-r.rar

1.97 MB, 下载次数: 30, 下载积分: 国防币 -1

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发表于 2012-2-3 07:06:06 | 显示全部楼层
谢谢楼主啊
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发表于 2012-3-5 09:18:58 | 显示全部楼层
谢谢楼主
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发表于 2012-3-8 13:30:31 | 显示全部楼层
提示: 作者被禁止或删除 内容自动屏蔽
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发表于 2012-3-8 13:30:32 | 显示全部楼层
提示: 作者被禁止或删除 内容自动屏蔽
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 楼主| 发表于 2012-4-13 09:36:47 | 显示全部楼层
zhiyao只要实名,都可以得到帮助,这是互相尊重,难道不好吗
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 楼主| 发表于 2013-2-22 10:09:00 | 显示全部楼层
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.
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 楼主| 发表于 2014-2-11 09:25:34 | 显示全部楼层
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 楼主| 发表于 2015-5-20 09:08:16 | 显示全部楼层
3D新版本发布
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.
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 楼主| 发表于 2016-8-29 09:55:57 | 显示全部楼层
3D模块是独立的。
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