Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Vehicle Duty cycle and Gear Programs

Vehicle Duty cycle and Gear Programs

Vehicle Duty cycle and Gear Programs

I hope someone can help me obtain information on the following. I work for a company that designs and manufactures on/off road vehicles e.g. fire tenders, 8x8 vehicles etc.

We normally estimate our own duty cycles for vehicles, and this in turn is used to size gears, bearings shafts etc. The problem is we feel we are oversizing our driveline, thus making it heavy etc.

My question is, does anybody know where information on duty cycles could be obtained? For example, would there be information available on RV's?

Also can anyone recommend software for analysing gears etc? Has anyone any experience of ADAMS/Driveline or similar software?

Any help at all will be great.

Thanks, Bandh

RE: Vehicle Duty cycle and Gear Programs

You get your duty cycles by measuring your product in the field.  You instrument the product, or inspect the wear on used product / prototypes.   You could guess that other products have the same duty cycle as your product - but if you don't compare the product results how do you know???


RE: Vehicle Duty cycle and Gear Programs

I hope you are using varying load cases
and duty cycles corresponding to those
loads.  You are the best source of knowing
the duty cycles.  What is you failure rate?
i.e. are you rating per 90 percent accuracy
from statistical data.?  You establish the
duty cycles.  If you do not reduce the weight
and cost someone else will.

RE: Vehicle Duty cycle and Gear Programs

What kind of factor are using for the
material factor?  Is your steel clean
and vacuum degassed?  Research has shown
this type of treatment increases the duty
cycles up to 5 times the normal. There
are normally so many factors used to
calculate duty cycles, two engineers would
independently get different results.
Because the load factor is a cubic function,
any error in your estimated load results
in a large error in the output.  The
static factor is generally only a squared
function, so static normally is less of a
problem.  You cannot beat testing your own
equipment for more accurate results.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


eBook - Integrating the Engineering Ecosystem
Aras Innovator provides multiple options for integrating data between systems, depending on the scenario. Utilizing the right approach to meet specific business requirements is vital. These needs range from authoring tools, federating data from various and dissimilar databases, and triggering processes and workflows. Download Now
Research Report - Simulation-Driven Design for SOLIDWORKS Users
In this engineering.com research report, we discuss the rising role of simulation and the paradigm shift commonly called the democratization of simulation. In particular, we focus on how SOLIDWORKS users can take advantage of simulation-driven design through two analysis tools: SOLIDWORKS Simulation and 3DEXPERIENCE WORKS. Download Now
White Paper - Industry 4.0 and the Future of Engineering Education
With industries becoming more automated, more tech-driven and more complex, engineers need to keep their skills and knowledge up to date in order to stay on top of this wave—and to be prepared for the Industry 4.0 future. The University of Cincinnati offers two online Master of Engineering degree programs designed specifically for practicing engineers. Download Now
eBook - The Design Gridlock Manifesto
In this eBook, you’ll learn 6 ways old CAD technology slows your company down and hear how design teams have put those problems to rest. “The Design Gridlock Manifesto” shares first-hand modern CAD experiences from 15 companies around the world. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close