|
Focus
on Fatigue |
MoreVision has developed a number of programs to post-process finite element
results, calculate fatigue damage and to plot damage directly onto the FE
mesh. The assessments cover code of practices used in many countries (UK -
BS7608, France -UIC 515-4 Goodman Diagram, German DIN 15 018, Swedish Volvo
standards) |
|
|
Experimental Methods |
MoreVision strain gauge testing compliments its analysis services. |
|
|
Software
Success |
MoreVision has sold
its innovative
engineering calculation software Research Engineers Inc. for worldwide distribution. The product has already earned MoreVision a
DTI SMART award for innovation. |
|
| Composite
Analysis |
MoreVision
has extensive experience in the modelling composite materials. |
|
|
Dynamic
Analysis |
|
Avoid resonance by performing a dynamic analysis. |
|
|
Plastic
Analysis |
|
What
happens when stress rises above yield? - it may not be as
severe a situation as you think. |
|
|
|
|
|
|
|
  Dynamics |
|
A non-linear dynamic model was
developed by a partner in Switzerland to study the dynamic behaviour
of the traction motor on its resilient mounts excited by the cardan
shaft out of balance forces from 0 to 200kmph. |
|
|
|
 Low speed pitching mode gives peak vertical loading on the motor
mounting brackets.
|
|
|
|
 High speed yaw mode gives peak
longitudinal and lateral loading. |
|
|
|
 All modes of vibration are evident in the plot of bracket forces
verses speed. It is notoriously difficult to interpret the results of
dynamic analysis and define loadcases for a finite element stress
model. The initial approach was to take the maximum loads in each
direction and apply them in the most adverse combination. This proved
to be too conservative and an alternative approach was developed.
It was possible to determine stress
time histories at fatigue critical locations using dynamic model
output. Damage could then be calculated using
rain flow counting methods. Once the approach was developed, design
iteration which included the rubber mount manufacturer allowed us to optimise the stiffness and damping
characteristics of a new high temperature motor mount. This was to become an important
part of the solution.
|
|
Next>
<Back |
|
|
|
|
|
|
|
Top
Software Tools |
MoreVision
have some 20 years experience of problem solving with ANSYSŪ. They
have developed a library of macros and software tools customizing
ANSYS for specific problems. |
|
|
Bolted Joint Analysis |
 MoreVision uses 'Boltcalc' software
in conjunction with FEA for fast & accurate assessments. |
|
|
Partnering
Client Design Teams |
 Will it fall off? Is it strong
enough? How long will it last? These are the questions on the minds of many
designers. MoreVision can team up to perform simple strength assessments to
allow designers to move forward with the confidence that their designs will
ultimately satisfy structural criteria. |
|
|
Independent
Design Audits |
|
A
fresh pair of eyes can offer an new insight into design critical
problems. |
|
|
Fixed
Price Contracts |
|
Whenever
possible MoreVision offers fixed price contracts from the outset of a
project. |
|
|
Failure
Investigations |
|
Simply strengthening an area
may not give you the results you want and could make the problem worse.
Before a solution can even be considered it is imperative that the mechanics
of the failure are completely understood. |
|
|
Can
we live with cracks? |
 Let MoreVision help you decide using their custom PD6493 software. |
|
|
Too
Hot to Handle? |
|
MoreVision
helps clients solve temperature problems. |
|
|
Stress
Overload? |
|
Use
MoreVision to offload work when you're too busy to cope. |
|
|
|
|
|
