1
Q
Motivation of isoparametric elements
A
To permit quadrilateral elements to have non rectangular shapes and curved sides
2
Q
Advantages and disadvantages of isoparametric elements
A
Irregular geometry
Curved boundaries
Transition from coarse to finite mesh to capture stress concentration
Disadvantage: loss of accuracy
3
Q
Requirement for uniqueness
A
The sign of the Jacobian (determinant), J, remain unchanged at all points of the mapped element
