m*******g
发帖数: 63 | 1 patran工业界用得还算多。
Patran 2005 是比较老的版本了，我有这个软件，patran+nastran 2005，需要联系我 |
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h***j
发帖数: 187 | 2 你听说的是错的。patran新版本可以打开旧版本的db文件，旧版本不能打开新版本的db
文件。bdf 文件是nastran的输入文件，是ascii格式。你可以用所有版本的patran打开
bdf文件（正确的说法是导入bdf文件）。 |
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l****s
发帖数: 72 | 3 问一下，有没有人使用过这个软件？ 不知工业界用的多不多？ 和其他的相比？
我最近要打开一个模型，是用PATRAN / Nastran 2005 创建的。格式.db or .bdf
听说 新的 2011 or 2012 不向下兼容，不知是不是有这个问题。
如果是，那应该如何解决？ 哪里能找到 2005 吗？ 如果有人用过可否指点一下？
感激 |
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a******n
发帖数: 98 | 4 用BDFfile import, Patran很多版本都能用 |
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p**e
发帖数: 126 | 5 it does not make much different in school, huge different in industry when
you create module from scratch instead of importing from CAD files.
if you have tried patran pcl, you will know how difficult and time consuming
it is to make even simple change. and if the model is a little complex, often
the script just goes nowhere or behave unpredictably.
don't take my word, do a little practic youself. as I said, do some
modification
and see how much time it takes to do in ansys/patran compared with |
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b******g
发帖数: 1 | 6 Aerospace company in Winston-salem, NC, 27106 has 2 CAE analyst openings:
1, Crash position: LS-DYNA and H2/H3 FTSS/LSTC dummy experience.
2, Shape optimization position: Altair OptiStruct. MSC Adams, Marc, Nastran
experience preferred.
Ideally, candidate need to have both experience, but excellent work
experience in one area is OK also. Hypermesh and Patran skill is needed also
. Any seat experience is desired.
Please send the resume or your contact information to beflying@mycingular.
blackerry |
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w**f
发帖数: 7794 | 9 Actually your problem is how to get isosurface from volume
data, there are many algorithm available.
One is marching cube algorithm. There is classe in VTK(visual
tool kit) from kitware company which can do this job very well.
The thing you need to do is to output the isosurface to
CAD model you need. Next step is import it to your
FEA software like PATRAN or ABQUAS to do your analysis. |
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v**********r
发帖数: 50 | 10 想用8-node element mesh一个球冠, 但是Hex8报告不能mesh, Tet可以, 不过没有8
node的. 试了四分之一个球冠, 还是不行. 哪位高手给点建议吧?多谢了. |
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f*******a
发帖数: 80 | 11 GMSH is terrific as an opensource project. It generates beautiful mesh.
However, its number capability is limited. if you use the numbering, the
matrix will end up messy, but not a nice banded matrix.
I am trying out with MSC Patran now. Commercial software. Very powerful in
mesh genreation, merging mesh. |
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i******d
发帖数: 565 | 12 呵呵，不至于都被淘汰吧。。
我力学phd毕业十年了，用过不少大型的有限元软件：ansys, abaqus, nastran/patran
, algor, cosmos等。我觉得每个软件几乎都有其特点和较好的应用领域。比如nastran
航空航天，abaqus非线性。ansys商业通用等。还有非常多的特定行业的有限元软件。
这些基本上都很难被淘汰的。因为有限元应用的领域非常多非常广泛，不可能有一个软
件能够囊括所有的领域通吃别的软件的。
我目前用ansys有6年多了，感觉相对来说这个软件是商业应用最广泛的。不过它也不可
能淘汰别的软件的。这些公司的软件代码都是几十年不断发展起来的。nastran发展至
今都快50年了，期间大量的科学家和工程师来完善和增强这个软件。
不清楚你的公司要具体怎么做和做什么，如果你的公司想淘汰掉这些公司，那是绝不可
能的。你能站有一席之地就非常不错了。
你的口气太大了。 |
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j**u
发帖数: 6059 | 13 ☆─────────────────────────────────────☆
caoer (caoer) 于 (Sat Jun 11 09:25:53 2011, 美东) 提到:
民科博导开公司了，祝顺利。。。
☆─────────────────────────────────────☆
tjhaven (无名) 于 (Sat Jun 11 16:38:38 2011, 美东) 提到:
坑兄，这个美国工资好像太低了吗？芝加哥搞计算的博士怎么样都要6~8万刀吗？计算机硕士都要6万朝上了。
而且这个表现都是老板说了算，标准很难确定。我给你个建议，要真想搞公司，博士8.5万，硕士7万保底。bonus和奖励另算。干得好有年薪的30%。
要不就别玩了。没有投入时没有产出的。
☆─────────────────────────────────────☆
tjhaven (无名) 于 (Sat Jun 11 16:44:51 2011, 美东) 提到:
怎么能推上十大？让大家看看？
☆─────────────────────────────────────☆
... 阅读全帖 |
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j**a
发帖数: 11 | 14 You may try interpolation at X = 0.65 and 0.75. If you have some FEA
post-processing software packages, such as Patran or Mentat that I have used,
you can easily do a 3d plot.
试
假
吗 |
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O***p
发帖数: 1333 | 16 I got the following error when running a thermal analysis,
***ERROR: AT LEAST ONE OF DEGREES OF FREEDOM 1 THRU 6 OR 8 MUST BE ACTIVE IN
THE MODEL FOR THIS PROCEDURE TYPE. CHECK THE PROCEDURE AND ELEMENT
TYPES USED IN THIS MODEL.
What's the problem and how should I fix it?
Or if you know any good Patran Toturial on thermal analysis, that will be a
great help to me too! |
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O***p
发帖数: 1333 | 17 CFD helps determin the convection HTC for the geometry. I did modeling in
Patran and I had to manually input the convection coefficient for the
geometry, which I hated so much because you know how difficult that is to do
with a finned heat sink, and when you have a pin-fin array heat sink, just
forget it.
Conduction only applies within the package. Convection and radiation is the
way to remove heat into ambient air. That's why I think CFD software is needed
conduction.
电的
，比
果有 |
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r********o
发帖数: 1423 | 18 现在想要得一批软件都找不到，怀念啊...
patran/nastran,UG和Catia，那位大侠有麻烦告知在下一声 |
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k*****a
发帖数: 1518 | 19 【 以下文字转载自 JobHunting 讨论区 】
【 原文由 arthou 所发表 】
很是头疼，在美混了快2年了，
学固体力学的，硕士即将毕业，
问我应该找什莫样的公司呢？
情况：方向：固体力学，偏计算。
对Ansys,patran软件等很熟悉。
望好心人指路亚！ |
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l**o
发帖数: 1240 | 21 跟aviation沾边的东西基本都是用patran,nastran，在学校和一般的公司很难接触到
而且什么那些FAA的regulation和standard没工作经验的人根本没概念
进这行也不容易啊
.. |
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r********o
发帖数: 1423 | 22 各个学校不一样，偶读书的时候学校里面patran/nastran的license有100个，至于ansys/
proE这些每台computer lab里面的pc都有，全部公用。 |
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p**e
发帖数: 126 | 23 in term of capability, nastran is the worst among the big three ansys abaqus
and nastran. and it is the least customizeable. however, it is proven, widely
used since the beginning of FEM. aerospace would be reluctant to switch to
other codes. but for other new field like medical etc, ansys and abaqus are
more
popular. now, nastran is trying to make it up by integrating ls-dyna and
marc into it to compete with abaqus.
on the other hand patran is still a pretty good one
ansys/ |
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r********o
发帖数: 1423 | 24 I believe the reason why nastran is standardized is simply because it's
introduced by NASA, and the NASA outourced the code to other company like MSC
and Nei, they introduced their pre-processing soft, like patran/femap...etc,
hehe
widely |
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r****n
发帖数: 163 | 25 Patran has the worst help documentation i have even seen. The user interface
is bad also. Ansys is much better in this sense. Parametric study with both
software under GUI is hard. Batch mode helps but hard to learn.
widely |
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p**e
发帖数: 126 | 26 don't know ansys. but know abaqus. should be the same for ansys
but I suspect it is not easy. I suppose you want to have
ach element with different property
the stuipd way is to use ansys sript / abaqus cript/ patran script to create
many property sets corresponding to each element. the input file would be
enourmous large, and the pre-processor might crash if the model is large.
the universal way is of course use material user-subroutine,
each element's property is calculated by your own program |
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p**e
发帖数: 126 | 27 try build a couple of and modify a couple of nonlinear model and do some
parameteric study using both patran/ansys/abaqus pre-post, you wll see the
difference. the feature based, object oriented framework from CAD software
just would save you tons of time and effort.
的
说 |
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t*******y
发帖数: 57 | 28 hehe，maybe the best way to prove yourself is making some detail comparison.
abaqus' nonlinear solver is great,but pre-post is just so so.
I have many years of experience on those fea softwares.For abaqus,i'd say i
am not very familar with v6.4 and v6.5, but it is really inconvinent to make
complex model before v6.3.
If abaqus got solid pre-post processor, why it bother to make a big interface
for patran and hypermesh? I don't think it is just for model compatible. |
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p**e
发帖数: 126 | 29 abaqus cae is not complete, but its feature based system is revolutionary in
major fem packages. none of the famous pre processors, hypermesh, patran,
ansys
etc, are not feature based.
give you the example
you created a cube solid, then later you want to change its size, in all
other package, you would either 1. delete the cube and recreate from scratch
2. create/record the macro to create the cube, save the macro as a file,
use text editor to edit the script, put different size value in, run th |
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t*******y
发帖数: 57 | 30 It is an interesting feature but not neccessary.
Either ansys's input script or patran's PCL script is very strong.
For your case, its just a simple parametic design. Just make a parametic
script,you can remodel any objects without hussle. Thats how the optimization
modula in ansys do. I always think making script is the best way to maintain
your model.
Whats more, there's some shortcoming for such kind of feature based design.For
Example,if you have sphere A and B,they contact at a single poi |
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a******n
发帖数: 98 | 31 I have a question about installation.
Thanks in advance! |
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s*****r
发帖数: 261 | 32 就想了解下，目前在实验室和工业界做project，哪个工具应用面广些：
1. ANSYS
2. COMSOL
3. ABAQUS
4. MSC/patran or nastran
5. ALGOR
6. ADINA
7. CFD-ACE+
8. FLUENT
9. CFX
后三个是流体方面的
帮忙顶一个，谢谢大家 |
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r********o
发帖数: 1423 | 33 you don't even list Nastran/Patran, hehe |
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