Shear Stress & Flow Flashcards
(8 cards)
1
Q
Shear stress
A
Acts over the cross-section & is equal to resultant of transverse shear stress distribution over cross-section.
2
Q
Shear Stress in Thin-Walled Section Assumptions
A
- Shear & Direct stresses constant across thickness
- Uniform constant cross-section along length of the beam
- Negligible axial constraint effects
3
Q
What is Shear Flow
A
Force per unit length of a beam.
q = τ*t
4
Q
Shear Flow of an Open Symmetric Cross-Section
A
q = VQ/I
where:
q = shear flow
V = shear force
Q = 1st Moment of Area
I = 2nd Moment of Area
5
Q
What is the Shear Centre?
A
Point where there is no twisting (Shear Force acting through SC).
Always lies on the axis of symmetry.
6
Q
SC for angle-type cross-sections
A
SC placed at the intersection of the sides.
7
Q
Shear centre section in aerostructures textbook
A
Page 545
8
Q
SC equation
A
3b²/(h(1+6b/h)
