Bearing loads and constraints in a plate
Bearing loads and constraints in a plate
(OP)
Hello-
I'm a novice abaqus user. I'm trying to model a plate that:
* is suspended vertically
* has holes across the top
* and one hole on the bottom
* cables run thru the upper holes, securing the plate
* a pin runs thru the bottom hole, applying the load.
* (imagine something like a crane, suspending a plate that a load is attached to).
I need to analyze stresses in the plate. These are bearing loads/constraints.
*LOADS: I've approximated the bearing load as a uniform pressure applied to half of the bottom hole
* BCs: I've held the upper half of the upper holes with encastre constraints.
My problem is this: I'm getting big stress concentrations at lateral sides of the constraint holes, at the boundaries of the partition.
Is there a better way to model bearing constraints and bearing loads?
I'm a novice abaqus user. I'm trying to model a plate that:
* is suspended vertically
* has holes across the top
* and one hole on the bottom
* cables run thru the upper holes, securing the plate
* a pin runs thru the bottom hole, applying the load.
* (imagine something like a crane, suspending a plate that a load is attached to).
I need to analyze stresses in the plate. These are bearing loads/constraints.
*LOADS: I've approximated the bearing load as a uniform pressure applied to half of the bottom hole
* BCs: I've held the upper half of the upper holes with encastre constraints.
My problem is this: I'm getting big stress concentrations at lateral sides of the constraint holes, at the boundaries of the partition.
Is there a better way to model bearing constraints and bearing loads?





RE: Bearing loads and constraints in a plate
To avoid the large stresses at the restraints you could calculate the load that would be applied there and apply a pressure load as described above, and then restrain the body elsewhere to prevent rotation and translation. If you have all the loads applied correctly then you would see zero reaction force at that position. Alternatively you could model the pin and use contact, restraining the pin. That would give you a 'soft' restraint at the pin hole.
Tata
RE: Bearing loads and constraints in a plate
RE: Bearing loads and constraints in a plate
What equation/constants should I use for defining the sinusoidal pressure?
RE: Bearing loads and constraints in a plate
Brian
www.espcomposites.com