Mechanical problem related to materials

Click For Summary
SUMMARY

The discussion focuses on the mechanical implications of fitting a 215mm wide glass window into an aluminum frame, particularly under varying temperature conditions in Bahrain, ranging from 5°C to 55°C. Key factors include the thermal expansion coefficients of aluminum (24x10-6/K) and glass (9x10-6/K). Participants emphasize the importance of researching relevant equations related to thermal strain and stress, as well as the density of glass to calculate its weight. The conversation highlights the necessity of understanding tensile and compressive stress in materials when subjected to temperature changes.

PREREQUISITES
  • Understanding of thermal expansion coefficients for materials
  • Knowledge of tensile and compressive stress concepts
  • Familiarity with material density calculations
  • Basic principles of mechanics related to temperature effects
NEXT STEPS
  • Research equations for thermal strain and stress in materials
  • Learn how to calculate the weight of glass using its density
  • Investigate the tensile and compressive strength properties of glass and aluminum
  • Explore the effects of temperature variations on material properties
USEFUL FOR

Students in mechanical engineering, materials science professionals, and anyone involved in the design and analysis of structural components affected by thermal expansion.

racer
Messages
39
Reaction score
0

Homework Statement



Use calculations to determine what could happen to the 215mm wide glass window if it is tightly fitted into the aluminum frame.

The temperature in the mechanical wrokshop was 20 C
The Maximum temperature in Bahrain = 55 C
THe Minimum temperature in Bahrain = 5 C
Thermal Expansion Alluminum = 24x10-6/K
Thermal Expansion Glass = 9x10-6/K

2- Calculate the weight ( grams ) of the glass window.
Use a glass size of 215mm * 155mm * 2.8mm

Homework Equations



No relevant equation

The Attempt at a Solution


I was not given any equation or any hint about how to solve it on purpose to make me research, I tried to search about an equation that I can plug these values in or anything related, the closest I got was with tensile stress but I have not found anything useful, I do not need someone to solve it for me, I need to know how to solve it and by what equation.

Thank you so much
 
Physics news on Phys.org
racer: The PF rules state we are not allowed to tell you how to solve your assignment. A large part of the learning process is to read and study your textbook enough to find and list some relevant equations yourself. Keep trying; list some relevant equations. And you must show your work; then someone might check your math.

Hint: Look up the density of your glass. Look for an equation relating temperature and strain, using coefficient of thermal expansion. Look for an equation relating stress and strain. Look for the tensile and compressive strength properties of your glass and aluminum materials.

You did not list the cross-sectional dimensions of your aluminum frame yet. Generally, I think window frames probably do not grip the glass rigidly enough to put the glass in significant tension (maybe I'm wrong). Therefore, you could probably just work the problem for compressive stress on the glass. But you could work it for tensile stress on the glass, also, if you wish.
 

Similar threads

Replies
5
Views
4K
Replies
1
Views
5K
  • · Replies 14 ·
Replies
14
Views
2K
  • · Replies 3 ·
Replies
3
Views
3K
Replies
22
Views
4K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 1 ·
Replies
1
Views
6K
  • · Replies 4 ·
Replies
4
Views
5K