Heating up of tyres on the road

Thread starter vcsharp2003
Start date Jan 18, 2023
Tags

Friction force Heat Heating

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Homework Help Overview

The discussion revolves around the phenomenon of tire heating when a car is driven on the road, focusing on the underlying physics principles involved. Participants explore concepts related to friction, rolling resistance, and the thermodynamic behavior of rubber materials under deformation.

Discussion Character

Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

Participants discuss the role of static versus kinetic friction in tire heating, with some questioning the assumptions about friction types. Others introduce the concept of rolling resistance and its relationship to heat generation through deformation of the tire material.

Discussion Status

The conversation is active, with various interpretations being explored regarding the mechanisms of heat generation in tires. Some participants have offered insights into the relationship between hysteresis and energy loss, while others have raised questions about terminology and the nature of rolling resistance.

Contextual Notes

There is ongoing debate about the definitions of rolling resistance and friction, as well as the implications of tire deformation on heat production. Participants express concerns about the clarity of terminology and its impact on understanding the physics involved.

Jan 19, 2023

Lnewqban

Homework Helper

Gold Member

When the asphalt is very hot, a lot of heat is transferred into the tires and the internal pressure increases.
When it is raining, the tires cooldown and the internal pressure decreases.

Strong braking and acceleration, as well as cornering, also transfer heat into the tires.

Internal friction of tube against carcass, or even inside delaminating plies of a damaged carcasse, also increases temperature of the tire.

A normal tire can become very hot (to the point of destruction) simply by underinflation combined with high static (weight) and dynamic (speed associated) loads.