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Omar

@iupui.edu

[Tech] Automotive Belt Wear life analysis

Does anyone know a research/paper has formulas that predict belt wear or life analysis?



Beezel1

@cox.net

said by Omar :

Does anyone know a research/paper has formulas that predict belt wear or life analysis?

It is hard to determine in real usage. Pulley wear and alignment, weather, heat, tension, etc. all factor in on the life of the belt. Rubber belts wear the fastest the poly belts hold up better.


Lurch77
Premium
join:2001-11-22
Oconto, WI
kudos:4

This is correct. There are far too many variables in the life of a belt to give and prediction. A slight pulley misalignment, for example, can chew up a belt in 5000 miles, where the belt might go 80000 on a proper system.



r81984
Fair and Balanced
Premium
join:2001-11-14
Katy, TX
Reviews:
·row44
reply to Omar

I work in rubber, there is no way to predict with a formula.
There are standards and specs set by the RMA, ISO, other standards, or the customers/car manufactures.
The belt manufactures find a rubber that they feel may meet the RPM, temperature, torque, wear life specs.
They then mold parts and test them to validate the parts meets the specs.

Search google for: engine belt wear rma

The RMA is the rubber manufacturing association.
You could also search other standards like ISO.
--
...brought to you by Carl's Jr.



r81984
Fair and Balanced
Premium
join:2001-11-14
Katy, TX
Reviews:
·row44

1 edit
reply to Omar

Search this also: analysis belt wear rma

Here are more standards:

• RMA – Rubber Manufacturers Association
• MPTA – Mechanical Power Transmission Association
• ISO – International Standard Organization
• SAE – Society of Automotive Engineers
• API – American Petroleum Institute
• ASAE – American Society of Agricultural Engineers

Here is a power point about belts: »www.cptbelts.com/customercenter/···3.08.ppt
It shows some slides on how they test.

Stress Fatigue Analysis

• Design Method

Tensions
Drive Speeds
Sheave / Pulley Diameters
Belt Length

• Estimates Belt Life in Hours
• Evaluates Various Drive Conditions
• Compares New Drive with an Existing Drive
• Variance Between Calculated Life & Actual Service Life
• Manual versus Computer System

This is a document on selection of belts and their properites: »www.banksengineering.com/Fan%20B···1400.pdf

It is possible to do some analysis with 3D modeling software that can calculate the wear of the rubber belt by its properties.
An FEA program like ANSYS can do this with 3D models and correct properties.
--
...brought to you by Carl's Jr.



r81984
Fair and Balanced
Premium
join:2001-11-14
Katy, TX
Reviews:
·row44

2 edits
reply to Omar

It looks like this guy did a thesis on exactly what you are asking about so read this: »tspace.library.utoronto.ca/bitst···esis.pdf

NEW APPROACH IN CHARACTERIZING
ACCESSORY DRIVE BELTS FOR
FINITE ELEMENT APPLICATIONS
By
FARBOD NASSIRI

"power to other auxiliary systems of the car. Development of a belt life model is of a significant importance to the accessory drive system manufacturers, in order to prevent any premature failures of these belts. However, any numerical analysis on the belt life is heavily dependent on gaining an understanding of stress distribution in the belts under the operational loading conditions."

I hope you are going to get the Purdue degree, not the IU degree. I went to Purdue, good luck with your paper.
--
...brought to you by Carl's Jr.



Cho Baka
Premium,MVM
join:2000-11-23
there
kudos:2
reply to Omar

SAE



Omar

@iupui.edu
reply to r81984

Thanks a lot .. this one is really helpful.



Omar

@iupui.edu
reply to r81984

I am actually having the Purdue degree