8. Bending Stresses in Composite Beams
Bending stresses in composite beams play a crucial role in the performance and reliability of modern structures. As a fusion of two or more distinct materials with varying mechanical properties, composite beams offer significant advantages in terms of strength, stiffness, and weight reduction.
|
Example 1 |
In Figure 30, two wooden planks \(y_1=x_2= 150 mm \times x_1=x_2=60 mm\) each are connected to form a \(T\) section of a beam. If a moment of \(6.4 kN-m\) is applied around the horizontal neutral axis, inducing tension below the neutral axis, find the bending stresses at both the extreme fibres of the cross-section. (i) Find the moment of inertia for the section. |
|
Figure 30. Unsymmetrical section.
|
Solution:
|
Figure 31. Unsymmetrical section.
|
|
Example 2 |
Figure 32 shows a rolled steel beam of an unsymmetrical I-section. If the maximum bending stress in the beam section is not to exceed \(45 MPa\), find the moment, which the beam can resist. \(x_1=y_2= 250 \mathrm{~mm}, x_2= 150 \mathrm{~mm}, y_1=y_3=60 \mathrm{~mm}\) (i) Find the moment of inertia for the section. |
|
Figure 32. Unsymmetrical section.
|
Solution:
|
Figure 33. Unsymmetrical section.
|
Add Comment
This policy contains information about your privacy. By posting, you are declaring that you understand this policy:
- Your name, rating, website address, town, country, state and comment will be publicly displayed if entered.
- Aside from the data entered into these form fields, other stored data about your comment will include:
- Your IP address (not displayed)
- The time/date of your submission (displayed)
- Your email address will not be shared. It is collected for only two reasons:
- Administrative purposes, should a need to contact you arise.
- To inform you of new comments, should you subscribe to receive notifications.
- A cookie may be set on your computer. This is used to remember your inputs. It will expire by itself.
This policy is subject to change at any time and without notice.
These terms and conditions contain rules about posting comments. By submitting a comment, you are declaring that you agree with these rules:
- Although the administrator will attempt to moderate comments, it is impossible for every comment to have been moderated at any given time.
- You acknowledge that all comments express the views and opinions of the original author and not those of the administrator.
- You agree not to post any material which is knowingly false, obscene, hateful, threatening, harassing or invasive of a person's privacy.
- The administrator has the right to edit, move or remove any comment for any reason and without notice.
Failure to comply with these rules may result in being banned from submitting further comments.
These terms and conditions are subject to change at any time and without notice.
Comments (7)
Ae we doing chapters 6, 7, 8 & 9?
No. That's for Solid II.
Kindly confirm for us the formula for volumetric strain
Hello, are the notes here all we will have for SSM2 or is there a possibility for addition?
Solid Mechanics II starts from chapter 6.
Could you confirm if in example 1 the shear force diagram is correct since from my shear force calculations the forces are positive meaning the diagram ought to be upwards
Yes, in example 1, the shear force diagram is correct. There are two point loads acting downwards, which tend to shear the bar in the negative direction.