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Design
Validation
Checking Designs to ensure they work and are cost-effective
just got easier be they Fit, Form or Functional requirements.
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Why
Design Validation?
Engineering
Enterprises involved in Product Development are facing numerous
challenges to stay competitive and profitable. While cost
reduction and increased profitability are essential for the survival of
a company having huge investments in men and machinery, increased
product development cycle time and agonising reliability issues
influence company bottomline compounding the challenges with erosion in
confidence and negative image in the marketplace.
Analysis of Cost going into a Product would provide a long list of
contributors including Input Raw Material, Manufacturing, Product
Development, Testing, Re-work, Error correction at site, Packaging and
Transportation.
A detailed review of the contributors will enable us to understand that
Design influences profitability. By over 85% the cost of a
product is dictated/ influenced by Design. Needless to say, if a
Cost Reduction exercise were to be undertaken by an organisation, it
should start with Design! Design Validation helps Engineering
Enterprises to not only reduce cost and increase profitability but also
adds immeasurable Value and Confidence - recipes for Success.
SolidWorks Simulation
Integrated inside
SolidWorks, the CAE capabilities of SolidWorks Simulation range from
simple static analysis to highly non-linear analyses involving contact,
large displacement and a variety of material models.
Designer driven, SolidWorks Simulation provides for Optimization, study
of multiple design scenarios using SolidWorks Parametric Dimensions and
Multi-domain capabilities.
Remaining
Life Analysis of Turbine Components
SolidWorks Simulation performs true Assembly level Stress analysis
involving contact between parts for realistic load transfer.
Why Assembly-level Simulation?
 Part level FEA
provides an approximate estimate of stresses and
deflections in a component.
As an example, let us
consider the stress analysis of a Yoke assembly
as shown in the figure. The Yokes ( 2
numbers) are connected to each other by a trunnion and are loaded by
Yoke Pins ( 2 numbers ) having flat faces for loading/ restraint.
The Yokes gets loaded
via the Pins and Trunnion in tension by a force
that tries to pull them apart. Free body
diagram analysis of each
part in equalibrium would provide the loads and restraint based on
contact. If a Part FEA
is done with only the analysis of the Yoke
under consideration, then the small hole on the shaft side of the yoke
would be restrained in a 120 degree bearing area normal to the plane of
loading while a pressure loading would be provided on the bearing area
as shown.
Review of the Part level FEA would show that the stresses would be in
zone of restraint. This would not be an accurate prediction since
it would be violating the St. Venant's Principle. Even in an
assembly level analysis the stresses would be in the same zone.
However, the re-distribution and levels of stress would vary due to
contact. This would result in a more accurate prediction in
comparison to part level FEA. Same would apply for study of
displacements too. The results are recorded here for the reader's
interest and interpretation.
Yoke Part FEA
- Displacement Plot
Yoke
Part FEA - Stress Plot
Yoke Assembly
FEA - Displacement Plot
Yoke Assembly
FEA - Stress Plot
Note: Stresses and
Displacements shown (for both Part and Assembly FEA) are for same mesh
size and using same element type. The reaction forces were
checked to ensure the part was loaded per functional requirement.
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Our Mission
Engineering
Development Through Effective Partnership
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Contact: SolidWorks
Reseller Chennai, Coimbatore, India
EGS Computers
India Private Limited
342/ 90 Arcot Road I Floor Kodambakkam
Chennai 600 024
Branch: 1/1 B.R.
Nagar Trichy Road Singanallur Post
(Opp. Coimbatore Stock Exchange) Coimbatore 641 005
Corporate:
+91-44-2480 3370
Corporate fax: +91-44-2484-4227
Coimbatore: +91-422-2310 268 / 2314 653
E-mail: info@egs.co.in
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