Rigid block between two cyllinders Ansys apdl

  • Thread starter Thread starter Shawndude
  • Start date Start date
  • Tags Tags
    Ansys Apdl Block
Click For Summary
SUMMARY

The discussion focuses on analyzing two cylinders of different materials separated by a rigid block using ANSYS APDL. The user employs the CE command to connect nodes between the cylinders, but encounters stress continuity issues, where the stress at the outer radius of the inner cylinder does not match the stress at the inner radius of the outer cylinder. Suggestions include utilizing contact conditions instead of direct node connections to address stress discontinuities caused by infinitesimal contact areas. The user aims to achieve displacement discontinuity while maintaining stress continuity.

PREREQUISITES
  • Understanding of ANSYS APDL commands, specifically the CE command.
  • Knowledge of material properties and stress analysis in cylindrical structures.
  • Familiarity with contact conditions in finite element analysis.
  • Basic principles of displacement and stress continuity in mechanics.
NEXT STEPS
  • Research how to implement contact conditions in ANSYS APDL.
  • Learn about the implications of using the CE command in stress analysis.
  • Explore methods to maintain stress continuity while allowing for displacement discontinuity.
  • Investigate the effects of material properties on stress distribution in cylindrical assemblies.
USEFUL FOR

Mechanical engineers, finite element analysts, and anyone involved in stress analysis of composite materials and structures using ANSYS APDL.

Shawndude
Messages
5
Reaction score
0
i want to analyse a two cylinders of different materials between which a rigid block of certain width exists. I am using CE command to connect the nodes of both the cylinders and the constant in Ce equation denotes the width of the the rigid block. When i solve the above problem , stress continuity is not maintained in both cylinders.that is, the stress at the outer radius of the inner cylinder is not equal to the stress at the inner radius of the outer cylinder.
 
Engineering news on Phys.org
Have you considered using a contact condition instead of directly connecting nodes? If it is a tangent condition it may be only a single node will be connected, which will result in a stress discontinuity due to the infinitesimal contact area.
 
Mech_Engineer said:
Have you considered using a contact condition instead of directly connecting nodes? If it is a tangent condition it may be only a single node will be connected, which will result in a stress discontinuity due to the infinitesimal contact area.
I am using CE so that i can implement the following condition:
UX1=n*UX2;
analytically i only want displacement discontinuity but when Implement CE ,the stress also becomes double . I want to maintain stress continuity but want displacement discontinuity.
 

Similar threads

  • · Replies 1 ·
Replies
1
Views
4K
  • · Replies 1 ·
Replies
1
Views
3K
Replies
4
Views
2K
Replies
0
Views
2K
Replies
2
Views
2K
  • · Replies 1 ·
Replies
1
Views
6K
Replies
49
Views
3K
  • · Replies 23 ·
Replies
23
Views
37K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 3 ·
Replies
3
Views
6K