*DECHARGE

Input distributed electric charges for piezoelectric analysis.

This option is used to input distributed electric charges on piezoelectric elements.

This page discusses:

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In Other Guides
Piezoelectric Analysis

ProductsAbaqus/StandardAbaqus/CAE

TypeHistory data

LevelStep

Abaqus/CAELoad module

Optional parameters

AMPLITUDE

Set this parameter equal to the name of the amplitude curve that defines the magnitude of the distributed electric charge during the step. If this parameter is omitted, the reference magnitude is applied immediately at the beginning of the step or linearly over the step, depending on the value assigned to the AMPLITUDE parameter on the STEP option (Defining an Analysis).

OP

Set OP=MOD (default) for existing DECHARGEs to remain, with this option defining electric charges to be added or modified. Set OP=NEW if all existing DECHARGEs applied to the model should be removed.

Optional, mutually exclusive parameters for matrix generation and direct-solution, steady-state dynamics analysis

IMAGINARY

Include this parameter to define the imaginary (out-of-phase) part of the loading.

REAL

Include this parameter (default) to define the real (in-phase) part of the loading.

Data lines to define distributed electric charges

First line

  1. Element number or element set label.

  2. Distributed electric charge type label (see About the Element Library).

  3. Reference electric charge magnitude. (Units of CL−2 for surface charges and CL−3 for body charges.)

Repeat this data line as often as necessary to define distributed electric charges for various elements or element sets.