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全部话题 - 话题: fem
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P*********d
发帖数: 4064
1
Other than aerospace and petroleum, you can give medical device industry a
try.
For most of structure devices, FDA requires FEM results to validate designs.
There are some job opportunities there.
j****x
发帖数: 943
2
nope. fem is better for capturing interface than the VOF in fluent like
software. Level set is better I guess.

少。
q*****z
发帖数: 191
3
大家好。我是学EE的,可最近工作需要实现低频(<500HZ)机械波在生物组织上传播
的仿真。看了一些书和PAPER,觉得没有头绪。有人用FEM做但是我没有这方面的基础。
我可能要用OPEN SOURCE的PROGRAM。ELASTICITY 和 VISCOSITY 都要考虑。
这里有人在这方面有经验吗?能不能帮我指条捷径?有人用CODE_ASTER 吗?我下了但
是不知道从哪里开始。谢谢。
h****a
发帖数: 36
4
无经验。
不过也是学EE的,现在做振动和声学。FEM的话找两个相关例子,照着做下,应该差不
多吧......听你的描述好像是表面波在皮肤上的传播,不太清楚如何仿真,不过一般都
是超声频段(对于人体组织,工业探伤),或者很低频的(地质那边,来测测地表阻抗
什么的),可以参考他们的模拟。感觉500Hz的波长已经和人体差不长了.......
j****x
发帖数: 943
5
来自主题: ME版 - ALE 和 Level-Set Method
First of all, thanks a lot for the valuable info.
Well, I am scared to know that "the ALE in most literature is mathematically
WRONG and the concept or vision about ALE is WRONG". Would you please post
one or two currently available mathematically correct paper? I suppose the
original Hirt ALE paper should be correct.
As far as the weighted integral form goes, I actually have somewhat
confidence. I took plenty of numerical analysis, FEM and BEM courses before,
programmed codes for simple and sli
F**D
发帖数: 6472
6
各有各的难处,隔行如隔山。

会做个网格,别人也会做个网格,不就用个软件吗?有什么特别的?殊不知做网格也有
水平、经验的区别,质量高低,数值耗散大小,是否提高速度、节约内存之分。做得差
的网格不别说运算精不好
不少,固体部件不过其中一个小小边界条件而已。
用多的是。简单的CFD和FEM程序我都写过,直接体会就是CFD难多了,你要是想真正比
较,先去写了代码结果调试出来再发话。就CFD实践应用来讲,我没有具体资料,但从
经验我敢说,不管什么用户
而且那不过是线性方程,非线性的好象至今无解。"边界层理论"是指Schlichting的
那本书,其实包括了流体力学的绝大多数理论,不仅仅是边界层,你借来翻翻再说不迟
。流体力学是很经典的学科?
你平时想用,而是找工作时人家要求,你能有什么奈何?python一个下午足以?当然不
是什么天书。但用python 将Fortran,C,C++这些CFD运算程序粘在一起,我没见过多
少PhD会。用matlab做CFD中的
真正的量化的uncertainty的概念。你错得一踏糊涂还以为做得不错呢。
花掉多少张草稿。你见过做实验的需要一堆草稿推导的吗?画图的就
F*****e
发帖数: 270
7
我平时很少用fluent,但我敢说若是fluent用得好的人,包括UDF,和各种PDF、VOF、声
学、燃烧、腐蚀模型的,也绝对不简单。CFD也不止FDM,FVM和FEM方法,无网格、
Boltzmann, MD方法,学问多着呢。
k*********d
发帖数: 841
8
mechanical structure, solid mechanics, kinematics, dynamics, fluid, thermal,
material, FEM, 这些都是必学的东西啊
j****x
发帖数: 943
9
FEM have a wide range of applications in fluids too.
w******n
发帖数: 645
10
来自主题: ME版 - Fluent Mesh file?
Fluent should be a FVM based code, not FEM, if I remember correctly. People normally use external package to create mesh to use in Fluent, such as Gambit.
i****a
发帖数: 88
11
The thermal characterization for micro/nanodevices, e.g., electrical and
optical thermometry in frequency and time-domain can be directly applied to
conventional heat transfer systems.
I won't recommend the modeling, or even FEM and FVM simulation using IcePak,
etc. You don't want to spend your time sitting there running non-sense
simulation just because high-level guys want to see nice plots. Those
simulation jobs are more suitable for Master level.
As to the job market, nanoscale heat transfer
j****x
发帖数: 943
12
On the contrary, I think FEM or FVM simulation and modeling using IcePak,
Flotherm or Fluent is a great plus for job hunting per se. It is true that
not many nanoscale heat transfer openings on the job market, however,
engineers in many electronics cooling related industries are hiring. If LZ
want to go for academia, I think these are not bad areas to delve into.

to
IcePak,
the
j****x
发帖数: 943
13
来自主题: ME版 - N-S方程求解求助
Do not agree. why is it not easy for FEM to get good CFD results?
g*****g
发帖数: 390
14
来自主题: ME版 - 请问:磁轴承的刚度计算
If you have a finite element model, I mean 3d drawing, then it should be
pretty easy to get stiffness from fem software.
t**o
发帖数: 6659
15
来自主题: ME版 - 报一个ME offer
【 以下文字转载自 JobHunting 讨论区 】
发信人: california (california), 信区: JobHunting
标 题: 报一个ME offer
发信站: BBS 未名空间站 (Thu Jul 15 17:00:09 2010, 美东)
ME,master, 南加, 3年经验
找了近一年,一些感触:
不要怕别人挑毛病.挑毛病的有三种:
第一种是对你感兴趣,想看看你对做过的项目理解的深度.
你说你做过A, 他就问B也跟A有关,或C属于A的高级应用,然后问你B和C的内容.
譬如我说我做过一个电器的散热方案,就问我用什么材料做的散热片(铜),为什么用铜(
散热性好),铜的散热系数(不知道),散热系数的单位(不知道)...我是做生产相关的,考
虑怎么管用就行了.没有那么多的分析.这时候表示愿意去学就行了.谁都知道就是翻一
翻书的事.
第二种也是对你感兴趣.但老板对招的人期望都很高,恨不得来面试的都样样精通,又只
想付entry level的薪水.对机械来说,这些技能包括了 设计,制图,受力分析,电机, FEM
, 散热, 流体, 材料, FDA, GMP, 机
f*******s
发帖数: 99
16
这要看你的目标是干什么了?
C*******e
发帖数: 25
17
主要是写一些学校里的做research的code. 因为看到有一些opensource的research
code象
openfoam 之类的,如果要搞明白,我觉得还是要花时间好好学学oop。正在犹豫中,不
知道是学学
c++, 还是就用我熟悉的fortran或C写些code得了. 望高手科普顺带解惑。谢了。
s********s
发帖数: 316
18
同请教,呵呵。
s********s
发帖数: 316
y******r
发帖数: 2986
20
【 以下文字转载自 CivilEngineering 讨论区 】
发信人: yalinger (已经告别孤独), 信区: CivilEngineering
标 题: Please give me suggestions for my career path.
发信站: BBS 未名空间站 (Fri Dec 31 12:28:41 2010, 美东)
Hello, everyone,
I will graduate soon from Michigan State University, and I am looking for
new positions. Right now I am a little confused about my career path.
Description below is my brief introduction. I do not know which field is
better to fit me, and please give me any suggestion as you like. Any reply
is highly appr... 阅读全帖
b***2
发帖数: 5
21
来自主题: ME版 - call for PhD student
Call for Ph.D. Student
Position: Ph.D. student (research assistant) in mechanical engineering.
University: Tennessee Technological University, Cookeville, Tennessee, USA
Advisor: Kwun-lon Ting (ASME fellow) http://www2.tntech.edu/me/Faculty_Bios/ktingbio.html
Financial aid: Research assistant ship starting $1300/month (renewable
annually) plus all tuitions and fees
Starting time: As early as possible
Area of research: computer aided geometry design, kinematics, linkages/
gearing... 阅读全帖
w***n
发帖数: 1084
22
来自主题: ME版 - FEA方向的出路怎么样?
你如果要转cs读graphics,应该很容易。graphics里头的动画大量用到FEM,CFD之类的simulation。
i****r
发帖数: 701
23
来自主题: ME版 - FEA方向的出路怎么样?
我是搞固体力学的,基础算比较扎实,做过断裂力学,大变形分析,流体耦合等。也做
过CFD。想FEM建模工作,不知道你有没有推荐?
k******g
发帖数: 15
24
A recruiter has been contacting me for this position. It's a Sr. Loads and
Dynamics Engineer position for Wind Energy company down in the Virginia Beach area
. The recruiter said the company is looking to fill this position right away
. If your background matches the job, you can contact him directly.
Good luck!
Ideally (people with experience in some of these topics would quickly adapt
to their
function and be really helpful from the beginning):

Experience in wind turbine dynamics and a... 阅读全帖
N***r
发帖数: 2539
25
I worked for CAT for more than three years, as student and also contractor.
CAT actually pays not very high but still ok in central Illinois. Last year
I was payed less than $70k as a contractor. CAT employee's salary is higher,
not sure, should be more than 80k while less than 90k. I mean, analyst such
as CFD, FEM ppl. Designers, testing ppl, I don't know.
CAT is pretty open for international ppl, not like deer. We have so many
Chinese.... CAT is expanding its business in China, Suzhou has a bi... 阅读全帖
l**********r
发帖数: 1745
26
来自主题: ME版 - 弱弱的女ME出路在哪里?
选课?有意思,正好我一直以来都有这个疑问,就多说两句。
呵呵,我上了15门课(一门是自己选的去audit的,不用付钱的也没有学分的,但是该
做的作业和项目我都做了,期中考试也是考了的,期末吗,老师说你不用考了,已经可
以直接给你证书了,他比较喜欢我,觉得我聪明。其他学生除了给学分,也都有这么个
证书的,呵呵,我也挺喜欢那个老师的,是欧洲的一个prof来我们这边visiting的),
so what?
仔细想想,能用到我phd期间的项目中的,有1门?两门?打个比方,上了数值分析,告
诉你怎么矩阵分解,解线性方程组(?), who cares,我又用不着,用了那么一丁点
symbolic的东东,MATHCAD全部搞定;上了工程优化,告诉你有A方法,B方法,C方法,
各自的优势劣势,who cares,我的项目中MATLAB 的 fmincon 全部搞定;学了xx控制,
yy控制,who cares,我的项目中也用不上;学了xx-dynamics,who cares,它说的是东
,我搞的是西;学了科学计算,怎么解微分方程,各种算法,who cares, MATLAB全部
搞定;学了FEM,我... 阅读全帖
c********l
发帖数: 125
27
你做做计算方向的啊
燃料电池很多多相流之类的东西
搞搞cfd FEM之类的东西吧
庆幸当初半只脚踏进去又拔出来了
l***i
发帖数: 64
28
The Nonlinear Dynamics Laboratory has one graduate Research Assistant
positions available at PhD level. The position will be supported by NSF
Grant CMMI-1100031, and will focus on research described in this link. Ideal
candidate will have the following qualifications:
MS (or highly qualified BS) degree in mechanical or biomedical engineering
or related fields.
Good mathematical background including differential equations and linear
algebra.
Some exposure to FEM and associated packages will be be... 阅读全帖
l**l
发帖数: 860
29
想知道你们作兼职的体会以及找到这些兼职的途径?
如果有CAD设计, FEM分析以及制造建模的机会,介绍给我也可以。谢谢!
另外如果有创业的机械同行,也可以交流交流。
j***x
发帖数: 80
30
工作找了大半年了,也没有什么收获,担心是自己经验太少没找对方向,所以求指点。
背景: ME Phd computational heat transfer, (conduction+convection+radiation)
skills: Fortran, matlab,CFD (proficient) AND FEM software (experience)
会用 AutoCAD,发过一些文章,有一点实习经历。
大家知不知道一些相关的企业?求指点
谢谢
j***x
发帖数: 80
31
工作找了大半年了,也没有什么收获,担心是自己经验太少没找对方向,所以求指点。
背景: ME Phd computational heat transfer, (conduction+convection+radiation)
skills: Fortran, matlab,CFD (proficient) AND FEM software (experience)
会用 AutoCAD,发过一些文章,有一点实习经历。
大家知不知道一些相关的企业?求指点
谢谢
c*****i
发帖数: 555
32
来自主题: ME版 - Internship opportunity
Our company has an internship opportunity open, requirement: master degree
in Mechanical Engineering, experienced in using Design Optimization
Algorithms/software, experienced in FEM/CFD, knowledge in statistical
analysis, good experience in coding or unix/windows scripting. The
company
is located in Greater Detroit Area. If you are interested, please send
your
resume to : e*******[email protected], thanks! We will begin to interview
people
very soon.
a**2
发帖数: 154
33
At the Department of Mechanical and Industrial Engineering at the University
of Iowa, we have an immediate Research Assistantship (RA) opening for a
project on wind turbine manufacturing, machining and surface treatment.
We are looking for highly motivated students with background in one or more
of the following areas:
1. Computational solid mechanics and computer modeling(FEM, dislocation
dynamics, MD, or phase field simulation)
2. Materials & mechanical behaviors,
3. Materials processing (e.g.... 阅读全帖
e*******6
发帖数: 2239
34
大恩不言谢
e*******6
发帖数: 2239
35
大恩不言谢
e*******6
发帖数: 2239
36
顶一下
e*******6
发帖数: 2239
37
up
e*******6
发帖数: 2239
38
前段时间没有登录
错过了几个
后悔莫及啊
e*******6
发帖数: 2239
39
up
e*******6
发帖数: 2239
40
up
e*******6
发帖数: 2239
41
up
w*********h
发帖数: 664
42
来自主题: ME版 - abaqus能模拟流体吗?
一般来说,像节点上的值,如压力,是用FEM,算法,edge-based values如速度场,是
用的 FVM算法。abaqus/CFD不用有限差分法。
y********9
发帖数: 91
43
所以我说我干的这个就是特别尴尬的
FEM做力学分析,整个硕士就几个课程的project用到了,我自己的research就没有做分
析这块,主要就是design and fabrication,所以觉得自己四不像,在实验室里,所有
的chemicals都得自己管,做,fabrication也是从头到尾
b********m
发帖数: 141
44
来自主题: ME版 - 求审稿
PhD + 2yr 半导体公司senior research scientist. 目前申EB1b需要审稿。背景是
simulation, FEM, solid mechanics, semiconductor process, photo-lithography.
邮箱[email protected]
(function(){try{var s,a,i,j,r,c,l,b=document.getElementsByTagName("script");l=b[b.length-1].previousSibling;a=l.getAttribute('data-cfemail');if(a){s='';r=parseInt(a.substr(0,2),16);for(j=2;a.length-j;j+=2){c=parseInt(a.substr(j,2),16)^r;s+=String.fromCharCode(c);}s=document.createTextNode(s);l.parentNode.replaceChild(s,l);}}catch(e){}})();
/* ]... 阅读全帖
g*****m
发帖数: 35
45
在一所专业前5,综排50+的学校读PhD,现在二年级,具体的研究方向是通过CFD和FEM
方法,结合C语言写的程序,对熔炉中生长的大晶体做传热分析、数值模拟。
导师本身是杰出教授,但是因为年纪太大,对学生的管理基本是放羊的状态,学生也经
常找不到他。问他问题也只能给出一些general的解释,具体编程的问题都是一问三不
知(本来有个博后负责coding,结果今年他走了)。组里近几年的学生基本是发1-2篇文
章毕业后去一个有合作的中型企业工作。
我本身希望毕业后走industry路线,因为他的方向比较偏应用才选他做导师。但是跟着
这样“不学无术”的教授感觉有些失落,都不知道毕业之后自己能达到什么水平。我想
问一下我应该怎样找出路?要不要继续跟他下去,还是直接选几门cs的课程转master走
人?
r******t
发帖数: 8967
46
老板放羊最爽了。自己折腾点大数据项目。毕业直接12万。

FEM
g*****m
发帖数: 35
47
在一所专业前5,综排50+的学校读PhD,现在二年级,具体的研究方向是通过CFD和FEM
方法,结合C语言写的程序,对熔炉中生长的大晶体做传热分析、数值模拟。
导师本身是杰出教授,但是因为年纪太大,对学生的管理基本是放羊的状态,学生也经
常找不到他。问他问题也只能给出一些general的解释,具体编程的问题都是一问三不
知(本来有个博后负责coding,结果今年他走了)。组里近几年的学生基本是发1-2篇文
章毕业后去一个有合作的中型企业工作。
我本身希望毕业后走industry路线,因为他的方向比较偏应用才选他做导师。但是跟着
这样“不学无术”的教授感觉有些失落,都不知道毕业之后自己能达到什么水平。我想
问一下我应该怎样找出路?要不要继续跟他下去,还是直接选几门cs的课程转master走
人?
r******t
发帖数: 8967
48
老板放羊最爽了。自己折腾点大数据项目。毕业直接12万。

FEM
A***D
发帖数: 64
49
来自主题: ME版 - CFD developer positions at Altair
我们也欢迎有FEM FSI背景的人才申请。
A***D
发帖数: 64
50
来自主题: ME版 - CFD developer positions at Altair
我们也欢迎有FEM FSI背景的人才申请。
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