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Concrete tied arch

Submitted by Mahendra Gattu on

Respected imehanicians!

                      I am a tackling an important problem about the behavior of concrete tied arch. Each concrete arch rests on two steel I-beams. The steel I-beams are supported at their ends. They are connected at various locations along their length by tie rods. A picture is worth 1000 words  basic figure.pdf.

mold filling simulation with flo3d

Submitted by masood_star on

 

I want to simulate mold filling of a bar mold with a semisolid alloy by means of FLOW3D cfd package. but there are some problem. for example when I input a file I encounter an error like "level   1 error in subroutine rdstl: level   1 error in subroutine rdstl"in preprocessor. what can I do? does my .stl file have any faults?

other problem with another project is that when i want to solve the problem I encounter an error like "convective flux exceeded stability limit".repeatedly. is my meshing insufficient? how can I solve that too?

What is the Shore A hardness used for?

Submitted by Biswajit Banerjee on
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The Shore A and D hardness tests are widely used by the rubber industry.  However, I'm not sure what practical use these numbers can be put to during design.  My current feeling is that Shore hardness numbers can at best give you a feel for the texture of the rubber - a Shore A value of 5 = gummy bear texture, Shore A = 40 implies erasure texture etc.

Can someone explain how Shore hardness values can be used in the design of mechanical components made of rubber?

Thanks in advance,

2nd position in the oil industry

Submitted by Edward W. Walbridge on

Our Agency, Reliability Analysis Associates, Inc., is seeking candidates for the "Manager, Methods and New Product Support" position described below.   Note that the position requires significant work experience in industry.  Salary range: $90K - $130K per year.

 

 

 

Reliability
Analysis Associates, Inc.

1440 North Lake Shore Drive, #30F,
Chicago, IL 60610

Position in the oil industry

Submitted by Edward W. Walbridge on

Reliability
Analysis Associates, Inc.

1440 North Lake Shore Drive, #30F,
Chicago, IL 60610

Phone:
312-274-0542;  Fax: 312-274-0574;  E-mail: reliability [at] nidus.com

Specializing in
the recruitment of Reliability, Maintainability,

Test,
Logistics, and System Safety Engineers

 

RAA, Inc. is seeking candidates
for the position described below:

 

The Industry's First Commercially Available Off-The-Shelf MEMS Microhotplate For Chemical Sensors Applications

Submitted by Anonymous (not verified) on

Laguna Beach, CA June 23, 2008 -- Kebaili Corporation a leading California based high-tech company in MEMS and nanotechnology, announced today the release of the KMHP-100 Series, the industry’s first commercially available off-the-shelf MEMS microhotplates for researchers and scientists in innovative chemical sensor research and development applications.