3D Connexion Version 6.6

*VOLUMETRIC TEST DATA

Viscoelastic material model

References:

•“Time domain viscoelasticity,”Section 17.7.1 of the ABAQUS Analysis User’s Manual

•*VISCOELASTIC

Optional parameter:

VOLINF

To specify creep test data, set this parameter equal to the value of the long-term, normalized

volumetric compliance, .

To specify relaxation test data, set this parameter equal to the value of the long-term,

normalized volumetric modulus .

The volumetric compliance is related to the volumetric m odulus by .The

ﬁtting procedure will use this value in the constraint .

Data lines to specify volumetric creep test data fora viscoelastic material:

First line:

1. Normalized volumetric (bulk) compliance .

2. Time .

Repeat this data line as often as necessary to give the compliance-timedata.

Data lines to specify volumetricrelaxation test data for a viscoelastic material:

First line:

1. Normalizedvolumetric (bulk) modulus .

2. Time .

Repeat this data line as often as necessary to give the modulus-time data.

21.7–3

ABAQUS Version 6.1 Module: ID:

Printed on: