HDTenEightyP/NetNews huggingface dataset:
From: pmiles@em9.eecs.wsu.edu (Kilroy was here)
Newsgroups: sci.engr.mech
Subject: spinning beam vibrations
Keywords: beam vibration
Date: 11 Oct 92 20:31:05 GMT
Article-I.D.: serval.1992Oct11.203105.16928
Organization: Washington State University


Could someone send me a list of sources where I can learn how to model
a cantilever beam where the beam lies on the z-axis and there is a set
of nonlinear forces acting on the beam in both the x and y directions.
Also, this beam is spinning clockwise about the z-axis.

I am having trouble developing a good numerical model to predict the
amplitude of vibration.

Any information will be greatly appreciated, thanks   :)

--
Peter J. Miles             Once a Marine Always a Marine 
pmiles@eecs.wsu.edu               Semper Fi  !!!!
From: abbasis@lafcol.lafayette.edu (Salahuddin Abbasi)
Newsgroups: sci.engr.mech
Subject: Information on a master's in controls
Date: 8 Oct 92 16:36:11 GMT
Distribution: usa
Organization: Lafayette College, Easton PA

Could someone please send me information on schools with a good 
master's program in the field of controls.  This does not have to be
a degree in controls, just a degree in mechanical engineering.  However,
I would like to concentrate in controls so I want a school with a good 
reputation in this field.  I am also looking for a research assistantship
or teaching assistantship so I would like to know if these schools have good
funding.

Thanks
From: Kish Pochiraju (Kishorpv@duvm.ocs.drexel.edu)
Newsgroups: sci.engr.mech
Subject: ANYONE WITH ABAQUS ELEMENT FOR ELECTRO_MAGNETIC ANALYSIS?
Date: 8 Oct 92 21:36:50 GMT
Reply-To: kishorpv@duvm.ocs.drexel.edu
Distribution: U.S.A
Organization: Drexel University


 
Hello fellow Mech. and Elect. Engg. Finite element analysts:

	Is there anyone out there who tried to implement electro-magnetic and
electro-static/dynamic analysis as  ABAQUS (HKS Ltd.) user elements?? or
better still, is there anyone who has already done it and is willing to let me
use/modify it?I will appreciate if you have some information and code to share
with me.  please email me at kishorpv@duvm.ocs.drexel.edu.

Thanks         Kish.
Newsgroups: sci.engr.mech
From: changl@ecf.toronto.edu (CHANG LI)
Subject: Digitizer in autoCad
Organization: University of Toronto, Engineering Computing Facility
Date: Wed, 14 Oct 1992 01:11:04 GMT

Hi,

I am going to be a new user of autoCAD.
I intend on using the TABLET MENU with a digitizer and a puck.
I have a few questions maybe you could help me.


1) Does the TABLET MENU come with the autoCAD softwear?
   So if I have a digitizer then I can use the TABLET MENU?  True/False?

2) There is such a thing as a template, is it simply a piece of paper
   that I can color photocopy?

3) I have asked around in the computer stores around Spadina and College.
   The prices are $475 for a large digitizer with puck, no template
		  $450 Summasketch II plus 12x12 digitizer, no template
		       with puck
		  $239 9x6 inch digitizer with template.

   How do these prices sound?


All comments and suggestions are greatly appreciated.
I intend on using autoCad to do mechanical drawings.

Is there a 1-800 number I could call about autoCad?  Customer service?

Thank you.



      Li Chang   Comp Eng 9T4                     ____
  First Class of Computer Engineering            /_|__\--,
     @ the University of Toronto           []Oo. `0-----0'

     changl@ecf.toronto.edu
-- 



      Li Chang   Comp Eng 9T4                     ____
From: jhaines@eniac.seas.upenn.edu (Jason Haines)
Newsgroups: sci.engr.mech
Subject: MEAM BBS
Date: 8 Oct 92 04:17:38 GMT
Organization: University of Pennsylvania


	Someone I know mentioned that a MEAM BBS used to exist
but that he didn't know any information about it anymore.
Does anyone know anything about such a BBS.  I think it was
sponsored by ASME.

thanks


------------------------------------------------------------------------
Jason R. Haines		     University of Pennsylvania (SEAS & Wharton)
------------------------------------------------------------------------
(215) 387-5607		      -   Red '90 Mustang LX 5.0  
			      - Blue '71 Rotary Powered Datsun 510 	
3rd floor		      - 
249 South 44th Street	      -  These are the opinions of my
Philadelphia, PA 19104-2945   -   employer, I'm self employed.
------------------------------------------------------------------------
From: jhaines@eniac.seas.upenn.edu (Jason Haines)
Newsgroups: sci.engr.mech
Subject: CVTs
Keywords: variable, transmission
Date: 8 Oct 92 04:14:47 GMT
Organization: University of Pennsylvania


	
	I am looking for technical information on the different 
types of continously variable transmissions that exist.  I am also
trying to find out which companies manufacture such systems.
Any recommendations on where I might get some of this info
(please don't say the library - I've already done a preliminary
library search).

thanks you


------------------------------------------------------------------------
Jason R. Haines		     University of Pennsylvania (SEAS & Wharton)
------------------------------------------------------------------------
(215) 387-5607		      -   Red '90 Mustang LX 5.0  
			      - Blue '71 Rotary Powered Datsun 510 	
3rd floor		      - 
249 South 44th Street	      -  These are the opinions of my
Philadelphia, PA 19104-2945   -   employer, I'm self employed.
------------------------------------------------------------------------
Newsgroups: sci.engr.mech
From: nabil@cae.wisc.edu (Nabil Ayoub)
Subject: Re: Chemically Reacting Air
Organization: U of Wisconsin-Madison College of Engineering
Distribution: usa
Date: 8 Oct 92 23:27:03 CDT

In article <1992Oct8.002433.20271@math.ucla.edu> rfedkiw@redwood.math.ucla.edu (Ronald Fedkiw) writes:
>I'm trying to model the flow of high temperature air.......
>I need to calculate the heat of formation of: N2 O2 N O NO NO+ e-
>                        ^^^^^^^^^^^^^^^^^
>Anyone know what to do ??? References ????`
>

I think the best reference is the JANAF Tables. You can find them
in any engineering library. These are tables and you probably you
have to interpolate. I am sure you can find a program that calculates
JANAF properties. I am aware of a thermodynamic equilibrium package
called STANJAN developed by Prof. Reynolds at Stanford. I am not sure
if it will be of help to model flow since it only deals with equilibrium
type problems.

Another point, the heat of formation of any *element* in its standard
state is ZERO (as in O2, N2, H2, etc..). Generally the enthalpy of an
ideal gas is given by :

		Ht(T) = Hf(To) + [H(T) - H(To)]

where           Ht(T) = Total enthalpy at any temp T
               Hf(To) = Heat of formation as reference temp (usually 298 K)
       [H(T) - H(To)] = Sensible enthalpy due to temp difference

In JANAF you'll find extensive tables for Hf(To) and [H(T) - H(To)] for 
almost any species.

I hope this helps.

Nabil

       .-------------------------------------------------------------.
      /  Nabil Ayoub                        ____/   __  /    ____/  /
     /  Engine Research Center             /       /   /    /      /
    /  Dept. of Mechanical Engineering    ___/    __  /    /      /
   /  University of Wisconsin-Madison    /       /   |    /      /
  /  Email:ayoub@erctitan.me.wisc.edu  _____/ __/   _|  _____/  /
 '-------------------------------------------------------------'
From: gdavis@ccwf.cc.utexas.edu (Grant R. Davis)
Newsgroups: sci.engr.mech
Subject: Re: Nonlinear spring design and analysis
Date: 16 Oct 92 17:39:14 GMT
Organization: The University of Texas at Austin, Austin TX

I haven't learned any nonlinear techniques yet, and I was wondering about
something. Is linearization at the point to be analyzed (the article in this
thread mentioned 'instantanous' characteristics) the only way to study a
nonlinear characteristic, or is there some different math that I haven't
learned yet?

Grant Davis
Xref: sparky sci.engr.mech:396 sci.engr:2106
From: davidt@ecst.csuchico.edu (David Taylor)
Newsgroups: sci.engr.mech,sci.engr
Subject: Nonlinear spring design and analysis help
Date: 7 Oct 92 17:23:49 GMT
Organization: California State University, Chico
NNTP-Posting-Host: cscihp.ecst.csuchico.edu

I am posting this for a friend. Please send responses back to
my mail box. Thank you.

I am currently working on a senior design project of a new type
of suspension system for off road vehicles.  Unfortunately, I
am having some problems modeling a nonlinear spring.  Our 
University library and faculty have been little to no help.
Therefore, am looking for help from the outside world.  What
I am looking for is any equations, sources of information or
any help that can be provided so that I can model a wide
variety of springs using an equation solver.

Our project scope is to first model an active suspension and 
from that data try to design and build a spring and shock 
system that will perform much like the active system.  The entire
front suspension system is being redesigned with new swing arms, 
spindle and shock mounting system.  We hope to incorporate this
in a truck that we race at the Baja 1000.  In a prevous race we
placed 3rd in our class with basically a stock truck with minor
modifications.

Any help would be greatly appreciated.  

                              Chris Glasser
                              Senior, Mechanical Engineering
                              Vice President, ASME student section
                              California State University, Chico
Newsgroups: sci.engr.mech,alt.cad,alt.cad.autocad,comp.cad.cadence
From: j0dong01@vulcan.spd.louisville.edu (Jian Dong)
Subject: Feature-based design and process planning, Concurrent CAD/CAM
Date: Fri, 16 Oct 1992 18:33:49 GMT
Organization: University of Louisville
Keywords: Feature-based Technologies, CAD/CAM, Process Planning

Dear readers:

I would like to get some information about who are doing research on the areas:
Feature-based design, feature-based process planning, Concurrent CAD/CAM, Design for manfuacutrability, and the applications of current solid modeling package in the research of integration CAD and CAM

I appreciate anyone assistance. I can be reached via following E-mail: 

Thank you very much for help

--------------------------------------------------------------------
John Jian Dong, Ph.D. Cadiadte
Department of Industrial Engieering 
University of Louisville
Louisville, Kentucky 40292
U.S.A

Internet: j0dong01@starbase.spd.louisville.edu
BITNET  : D0JIAN01@ULKYVX.BITNET
-------------------------------------------------------------------
From: pushkar@bongo.cc.utexas.edu (pushkar tamhane)
Newsgroups: sci.engr.mech
Subject: Re: Commercial Finite Element Packages
Date: 12 Oct 92 20:42:39 GMT
Article-I.D.: ut-emx.81552
Reply-To: pushkar@bongo.cc.utexas.edu (pushkar tamhane)
Organization: The University of Texas at Austin, Austin TX
Originator: pushkar@bongo.cc.utexas.edu

I am posting this for someone who was not able to post on the net. I found
it very informative.

	Pushkar
-----------------------------original message-----------------------------

There are, as noted in the original posting, several commercially available 
Finite Element packages on the market.  In addition to ABAQUS, MSC/NASTRAN, 
and ANSYS, all of which are good packages, but with different capabilities, 
and markets, there are a considerable number of less well known packages.  
Some of these are specifically for the IBM-PC platform (such as ALGOR), and 
some have better dynamics capabilities, or buckling, or thermal capabilities 
than others.  There is even a P-version code out commercially, called RASNA, 
which is very good.

For the practitioner who needs to make a rational decision about what package 
to purchase, the first oder of business is deciding what type of problems 
will be solved with the package.  It is not really as easy as just deciding 
which is best, each of the packages has its good points and bad points.  
ABAQUS is an extremely good non-linear code, but is overkill for the more 
common linear elastic problems.  MSC/NASTRAN is very good at the airplane 
kinds of analysis, as one might guess (linear statics and dynamics).  ANSYS 
seems to be good for the power plant and automotive industries.  If a small 
commercial shop has AUTOCAD, then ALGOR might be the best answer.  

If I might make a suggestion, the Computers in Engineering Division of ASME 
puts on a conference each year, which deals in part with this issue.  There 
is also an exhibit with the conference with participation from most if not 
all of the larger commercial FE vendors.  I happen to be the Chairman of the 
conference this year, and would be delighted to see this whole issue brought 
up and fully discussed at the conference.  It will be in San Diego in August 
of 1993.  I can email anyone a copy of the call for papers that wants one, or 
I would be delighted to respond to any other requests for information.  
Alternatively, if anyone is interested, I have been in this business for a 
long time, and can help the uninitiated.  Those that have been around for 
some time I hope will understand that I am somewhat reticent to engage in 
what always tends to be a religious war.  That is, the choice of the "BEST" 
finite element package.  There is NO BEST ONE.  It all depends on the problem 
that is to be solved, and the analyst's abilities and proclivity.

Edward M. (Ned) Patton          npatton@swri.edu
Southwest Research Institute
San Antonio, TX  78228
Newsgroups: sci.engr.mech
From: merbe02@vmsa.technion.ac.il
Subject: Re: Nonlinear spring design and analysis
Organization: Technion, Israel Institute of Technology
Date: Fri, 9 Oct 1992 11:52:14 GMT

In article <1av6f5INNjms@charnel.ecst.csuchico.edu>
davidt@ecst.csuchico.edu (David Taylor) writes 

>I am having some problems modeling a nonlinear spring

For non-linear spring analysis I could recommend you a new technique. Here 
it is the abstract of the paper submitted to XI Intern. Modal Analysis
Conf. (Session 24: Non-Linear Structures) 
	
	ANALYSIS OF TYPICAL NON-LINEAR VIBRATION SYSTEMS  BY USING 
			THE HILBERT TRANSFORM 

                  Michael  Feldman,  Simon Braun                      
                 Faculty of Mechanical Engineering               
          Technion ---  Israel  Institute  of Technology  
                      Haifa, 32000, Israel 
	
	 Every  typical  non-linearity  in  spring  (hard  or  soft spring,
backlash, pretensioned (preloaded) system, bi-linear system, impact system
etc.) has its  unique  form  of  skeleton  curve (backbone).  Suggested 
analysis of the topography of the skeleton  curve  is essential  for 
evaluation of  the properties of the particular  vibrating system, e.g.
through  reconstruction of any  characteristics of the elastic forces.     
If a system to be tested has non-linear damping   characteristics the
instantaneous damping parameters are also  functions of its  envelope and
instantaneous frequency. These  dependencies  allow  estimation of  a type
and a value of different kinds of damping: dry friction, structural,
viscous ones, etc. Technique of a non-linear  system investigation  based 
on  the Hilbert transform enables  us  to  identify the  system
instantaneous modal parameters (undamped natural frequencies, damping
characteristics and their dependence on vibration  amplitude  and
frequency)  during both the  free  vibration  and various   kinds of
excitation  of  the  dynamic  system.  Direct  time domain techniques allow
direct extraction of linear  and non-linear systems parameters from  a
measured  time signal of input and output. The proposed  method  of  force 
vibration  analysis determines instantaneous modal parameters even if an
input signal is a high sweep frequency quasi-harmonic signal or a random
signal.
From: cf124@cleveland.Freenet.Edu (Claudio Ruggieri)
Newsgroups: sci.engr.mech
Subject: FEM to crack problems (Re: Commercial Finite Element Packages
Date: 7 Oct 1992 07:31:24 GMT
Organization: Case Western Reserve University, Cleveland, OH (USA)
Reply-To: cf124@cleveland.Freenet.Edu (Claudio Ruggieri)
NNTP-Posting-Host: hela.ins.cwru.edu


	Could somebody make some comments on the package NIKE3D? In my laboratory,
we are currently analysing fracture mechanics of elastic-plastic materials (static
analysis) and I am having several problems associated with numerical convergence,
especially for large strains. This is somewhat expected, but the only solution 
that I have found was to use larger crack tip elements. In ADINA, it seems that
using 3x3x3 Gaussian quadrature at the crack tip elements, the results are better.
Is it true? In NIKE3D, it is available only a solid element with 8 nodes and
2x2x2 quadrature.

If it is all possible, please email me to the adress below

Thanks

Claudio Ruggieri
-- 
Claudio Ruggieri                     !  Cerimonial Tea : 
Faculty of Engineering               !  Just boil the water,
Osaka University, Japan              !  make the tea and drink it.
email: a62420a@center.osaka-u.ac.jp  !  That's all !!!
From: jtrsmith@garnet.berkeley.edu ()
Newsgroups: sci.engr.mech
Subject: Examples of input files for FEM codes needed
Date: 7 Oct 1992 17:47:36 GMT
Organization: University of California, Berkeley
Distribution: world
NNTP-Posting-Host: garnet.berkeley.edu

Hi, Sirs,
I want to collect examples of input file for different FEM packages, 
like NASTRAN, Patran, ANSYS, ABAQUS, or other small FEM codes, etc.
My purpose is to compare the styles and methods in input file in these 
codes.

Thanks
(If possible, please mail to this account.)
JTR Smith
Newsgroups: sci.engr.mech
From: rfedkiw@redwood.math.ucla.edu (Ronald Fedkiw)
Subject: Chemically Reacting Air
Organization: UCLA Mathematics Department
Distribution: usa
Date: Thu, 8 Oct 92 00:24:33 GMT

I'm trying to model the flow of high temperature air.......
I need to calculate the heat of formation of: N2 O2 N O NO NO+ e-
                        ^^^^^^^^^^^^^^^^^
Anyone know what to do ??? References ????`

--
Ron Fedkiw (rfedkiw@joshua.math.ucla.edu)

A plan is made by someone who is sitting and thinking ...
while others are doing.
Newsgroups: sci.engr.mech
From: rizzo@cbnewsf.cb.att.com (anthony.r.rizzo)
Subject: Re: DYNA3D FEA Program
Organization: AT&T
Date: Tue, 13 Oct 1992 22:17:42 GMT

In article <gwnpnca@lynx.unm.edu> benner@triton.unm.edu () writes:
>Does anyone have an address or any information on the availability
>of DYNA3D ? This is an explicit finite element program developed
>by Hallquist at Lawrence-Livermore National Laboratory, and
>it is supposed to by public-domain.
>
>Thanks.
>
>John Benner    benner@slider.unm.edu
>


Contact KIT Corporation, in Minneapolis-St. Paul.  They
sell a program called DYNALINK, which is an interface
between DYNA3D and ANSYS.  They would surely know how
to get DYNA3D.

Tony Rizzo
att.com!hogpb!rizzo
Newsgroups: sci.engr.mech
From: umbrock0@ccu.umanitoba.ca (Ed Brocki)
Subject: SAE Aero Design Competition
Organization: University of Manitoba, Winnipeg, Canada
Date: Thu, 15 Oct 1992 01:09:37 GMT

We are looking for any information about the SAE Aero Design Competiton.
We want to know what the competition is like, how the report should be
structured, how the planes are designed.  This is our first try at this
competition, and for a number of us, will be the last try since we graduate
in April.  If any one can help us, please email.  
We are especially curious as to how to write the report since no format is
really specified.  We would appreciate the ability to read one, so that we
have an idea how to write our own. 
Thanks for your interest, and if you can help, please write.


Ed Brocki
University of Manitoba
From: ecaxron@ariel.lerc.nasa.gov (Ron Graham)
Newsgroups: sci.engr
Subject: TQM Mailing List being formed
Date: 13 Oct 92 15:50:00 GMT
Organization: NASA Lewis Research Center

Based on comment I have seen in this newsgroup that (a) a TQM Mailing List
is desirable and (b) none currently exists, I am going to work on forming one.

Topics for such a Mailing List could include, but not be limited to:

o  definitions of TQM, TQL, or whatever you call it;
o  methods for building quality into processes;
o  the works of Deming, Taguchi, and other quality wizards;
o  balancing technical precision with customer relations.

And so on.  If you are interested, send me your e-mail address.  Right now
I have no idea how exactly to pull this off, but I see a digest format as
most likely at this point, because I do not have list server capability 
that I know of.  If you would like to donate list server capability, let me
know.  Otherwise, it'll probably be digest format unless the distribution
gets too large.

RG

"Drive Out Fear."  -  from Deming's 14 Points
From: seaney@engr.wisc.edu
Newsgroups: sci.engr.control
Subject: Matlab Book Suggestions
Date: 7 Oct 92 22:20:05 GMT
Organization: Univ of Wisconsin Madison


 
I'm looking for suggestions of books discussing Matlab for Controls
applications.  Are there any good ones out there?

Thanks,
Steve
Newsgroups: sci.engr.control,comp.ai,comp.ai.neural-nets
From: wald@alfalfa.sps.mot.com (Steve Wald)
Subject: Re: How to find - Motorola Fuzzy logic Kit
Keywords: fuzzy logic, education
Organization: Motorola, Paging and Wireless Data Group
Date: Fri, 16 Oct 1992 23:47:40 GMT


>>Contact Fritz Wilson at Motorola. His sole purpose in life is to
>>help universities get what they need.
>>
>>Fritz Wilson
>Tel:            602-952-3855
>>FAX:            602-952-3621
>>Internet:       univeristy_support@spshqqm.sps.moto.com
>
>
>What is the CORRECT address of Mr Wilson? I tried to reach him
>correcting "univeristy" to "university" - to no avail.

1) try changing sps.moto.com to sps.mot.com

2) try using one of:
	Fritz Wilson
	    Email: r69400@waccvm.sps.mot.com
	   *Email: R69400@email.sps.mot.com
	    Phone: 602-952-3855  

-- 
Steve Wald, Motorola Inc.
wald@borg.sps.mot.com
From: vankay@enel.ucalgary.ca (Vidyasagar Vankayala)
Newsgroups: sci.engr.control
Subject: Re: WANTED: PD Simulator
Date: 8 Oct 92 18:13:08 GMT
Organization: ECE Department, U. of Calgary, Calgary, Alberta, Canada

In article <1992Oct7.150814.17168@newsserver.rrzn.uni-hannover.de> zzwz@rrzn.uni-hannover.de (Wolfgang Zocher) writes:
>I'm looking for an simulator (written in C) to simulate control-loops
>with various transfer-functions. I've to run it on an ATARI ST, so I
>must have the sources.
>I think tutsim would do it, but this thing won't run on my old ATARI.
>

I would also be interested in any PD- simulator in c/c++ for Unix
systems.

Can somebody give some pointers ?

thanx very  much.
>
>--
>Wolfgang Zocher

cheers,
Vidya
-- 
Email : vankay@enel.ucalgary.ca     OR    vankayal@uncamyr.ucalgary.ca
Slogan.SCI : (Version 1.0.0)
Support bacteria -- it's the only culture some people have!
Xref: sparky sci.engr.control:177 comp.ai:3920 comp.ai.neural-nets:3942
From: drbaker@cc.utah.edu
Newsgroups: sci.engr.control
Subject: Re: Fuzzy Control Systems - The Inverted Pendulum
Date: 14 Oct 92 02:42:11 GMT
Article-I.D.: cc.1992Oct13.204211.1
Organization: University of Utah Computer Center

Mark,

Check out this article:

Yamakawa, Takeshi, "Stabilization of an inverted pendulum by a high-speed
fuzzy logic controller hardware system," in Fuzzy Sets and Systems (book)
32 (1989) 161-180 by North-Holland.

It is heavy into the hardware, but there is some good info. on applying 
fuzzy to the inverted pendulum and some good references.

Also check out IEEE's Spectrum this month and back in July 1992 -- they
are doing a good job of introducing the topic.

Good luck,

Dan Baker

baker@me.mech.utah.edu