MATTVE

Bulk Data Entry Defines material properties for temperature-dependent nonlinear viscoelastic materials.

Format A

Williams-Landel-Ferry (Model = WLF):
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
MATTVE MID Model C1 C2 T0

Format B

Arrhenius (Model = ARRHENIU):
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
MATTVE MID ARRHENIU E0 R T0 Tz

Example A

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
MATTVE 2 WLF 4.0 215.0 10.0

Example B

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
MATTVE 2 ARRHENIU

Definitions

Field Contents SI Unit Example
MID Material identification number that matches the identification number of the corresponding MAT1 entry.

No default (Integer > 0)

 
Model Viscoelastic material model type.
WLF
Williams-Landel-Ferry model
Arrheniu
Arrhenius model

No default

 
C1 WLF constant C1.

Default = Blank (Real > 0.0)

 
C2 WLF constant C2.

Default = Blank (Real > 0.0)

 
E0 Activation energy for the Arrhenius model.

No default (Real > 0.0)

 
R Universal gas constant.

No default (Real > 0.0)

 
T0 Reference temperature.

No default (Real)

 
Tz Absolute zero temperature.

No default (Real)

 

Comments

  1. Support information for MATTVE is:
    Supported Analysis Types Supported Elements
    Nonlinear static and Nonlinear transient, for both small and large displacement cases CHEXA, CTETRA, CPENTA, and CPYRA
  2. The temperature effect on the viscoelastic material is introduced by the thermo-rheologically simple temperature effects:(1)
    σ=0tgftfsσ˙0ds MathType@MTEF@5@5@+=feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=xfr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeq4WdmNaeyypa0Zaa8qCaeaacaWGNbWaaeWaaeaacaWGMbWaaeWaaeaacaWG0baacaGLOaGaayzkaaGaeyOeI0IaamOzamaabmaabaGaam4CaaGaayjkaiaawMcaaaGaayjkaiaawMcaaiqbeo8aZzaacaWaaSbaaSqaaiaaicdaaeqaaOGaamizaiaadohaaSqaaiaaicdaaeaacaWG0baaniabgUIiYdaaaa@4BB0@
    Where,
    ft=0t1ATsds MathType@MTEF@5@5@+=feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=xfr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamOzamaabmaabaGaamiDaaGaayjkaiaawMcaaiabg2da9maapehabaWaaSaaaeaacaaIXaaabaGaamyqamaabmaabaGaamivamaabmaabaGaam4CaaGaayjkaiaawMcaaaGaayjkaiaawMcaaaaacaWGKbGaam4CaaWcbaGaaGimaaqaaiaadshaa0Gaey4kIipaaaa@46D7@
    The reduced time given by:
    ATs MathType@MTEF@5@5@+=feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=xfr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamyqamaabmaabaGaamivamaabmaabaGaam4CaaGaayjkaiaawMcaaaGaayjkaiaawMcaaaaa@3B9C@
    Shift function
    T MathType@MTEF@5@5@+=feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=xfr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamivaaaa@36CC@
    Temperature
  3. Two forms of shift functions are supported:
    • Williams-Landel-Ferry form(2)
      log10A=C1TT0C2+TT0 MathType@MTEF@5@5@+=feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=xfr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaciiBaiaac+gacaGGNbWaaSbaaSqaaiaaigdacaaIWaaabeaakmaabmaabaGaamyqaaGaayjkaiaawMcaaiabg2da9iabgkHiTmaalaaabaGaam4qamaaBaaaleaacaaIXaaabeaakmaabmaabaGaamivaiabgkHiTiaadsfadaWgaaWcbaGaaGimaaqabaaakiaawIcacaGLPaaaaeaacaWGdbWaaSbaaSqaaiaaikdaaeqaaOGaey4kaSYaaeWaaeaacaWGubGaeyOeI0IaamivamaaBaaaleaacaaIWaaabeaaaOGaayjkaiaawMcaaaaaaaa@4D45@
    • Arrhenius form(3)
      lnA=E0R1TTz1T0Tz MathType@MTEF@5@5@+=feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=xfr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaciiBaiaac6gadaqadaqaaiaadgeaaiaawIcacaGLPaaacqGH9aqpdaWcaaqaaiaadweadaWgaaWcbaGaaGimaaqabaaakeaacaWGsbaaamaabmaabaWaaSaaaeaacaaIXaaabaGaamivaiabgkHiTiaadsfadaWgaaWcbaGaamOEaaqabaaaaOGaeyOeI0YaaSaaaeaacaaIXaaabaGaamivamaaBaaaleaacaaIWaaabeaakiabgkHiTiaadsfadaWgaaWcbaGaamOEaaqabaaaaaGccaGLOaGaayzkaaaaaa@4A71@