FAILURE
MECHANISMS
| Mode |
Criterion |
Face
sheet compressive failure
|
Composite
failure criterion
(e.g., maximum stress, Tsai-Wu) |
Adhesive
failure
|
Maximum
shear stress of adhesive |
Core
failure
|
State
of stress in foam reaches failure
condition (e.g., Tsai-Wu) |
Facing
wrinkling
|
Face
sheet stress equals critical local buckling stress |
Indentation
failure
|
Core
state of stress reaches failure condition; critical compressive
stress in face sheet under local bending |
Failure
modes in sandwich beams
Indentation
failure
Facesheet
wrinkling failure
Core
sheer failure
Beam
under three-point-bending - progressive core failure
|
