Elastic Compliance

2022-07-21 15:07

Elastic compliance, s, is the strain produced in a piezoelectric material per unit of stress applied and, for the 11 and 33 directions, is the reciprocal of the modulus of elasticity (Young's modulus, Y). sD is the compliance under a constant electric displacement; sE is the compliance under a constant electric field. The first subscript indicates the direction of strain, the second is the direction of stress.

 

sE11

elastic compliance for stress in direction 1 (perpendicular to direction in which ceramic element is polarized) and accompanying strain in direction 1, under constant electric field (short circuit)

sD33

elastic compliance for stress in direction 3 (parallel to direction in which ceramic element is polarized) and accompanying strain in direction 3, under constant electric displacement (open circuit)

 

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