Change of volume in pure torsion

  • #1
2
0
why change of volume in pure torsion is zero?
if you consider stress in plane with degree of 45 there is normal stress
normal stress can lead to change of volume
 

Answers and Replies

  • #2
Simon Bridge
Science Advisor
Homework Helper
17,857
1,655
define "pure torsion"...
 
  • #3
2
0
Pure torsion appears when exterior forces acting perpendicular to the bar axis
produce only moments of torsion acting along the bar axis
 
  • #4
Simon Bridge
Science Advisor
Homework Helper
17,857
1,655
i.e. pure torsion is defined to be the case where the normal stresses are zero.
 
  • #5
20,987
4,613
why change of volume in pure torsion is zero?
if you consider stress in plane with degree of 45 there is normal stress
normal stress can lead to change of volume
See what you get if you evaluate the three principal stresses. Do they sum to zero?
 

Related Threads on Change of volume in pure torsion

Replies
6
Views
7K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
16
Views
4K
  • Last Post
Replies
15
Views
46K
  • Last Post
Replies
3
Views
4K
  • Last Post
Replies
2
Views
3K
  • Last Post
Replies
2
Views
3K
Replies
1
Views
1K
  • Last Post
Replies
3
Views
3K
Replies
2
Views
695
Top