Abaqus Volume II: I–Z Uživatelský manuál stáhnout pdf (Strana 267)

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101

PIPE-SOIL STIFFNESS

3. Temperature.

4. First ﬁeld variable.

5. Second ﬁeld variable.

6. Etc.,uptoﬁveﬁeldvariables.

Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than ﬁve):

1. Sixth ﬁeld variable.

2. Etc., up to eight ﬁeld variables per line.

Repeat this set of data lines as often as necessar y to deﬁne the force per unit length as a function of

relative displacement, temperature, and other predeﬁned ﬁeld variables.

Data lines to deﬁne constitutive behavior using the ASCE formula for sand in the axial direction

(TYPE=SAND, DIRECTION=AXIAL):

First line:

1. Effective unit weight of soil, .

2. Coefﬁcient of soil pressure at rest,

3. Interface angle of friction,

. Givethevalueindegrees.

4. External pipe diam eter, D.

5. Ultim ate relative displacement,

6. Temperature.

7. First ﬁeld variable.

8. Second ﬁeld variable.

Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than two):

1. Third ﬁeld variable.

2. Etc., up to eight ﬁeld variables per line.

Repeat this set of data lines as often as necessary to deﬁne the parameters for the ASCE for mulae as a

function of temperature and other p redeﬁned ﬁeld variables.

Data lines to deﬁne constitutive behavior using the ASCE formula for clay in the axial direction

(TYPE=CLAY, DIRECTION=AXIAL):

First line:

1. Undrained soil shear strength, S.

2. Empirical adhesion factor,

3. External pipe diam eter, D.

4. Ultim ate relative displacement,

5. Temperature.

6. First ﬁeld variable.

16.10–3

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Abaqus Volume II: I–Z Uživatelský manuál Strana 267

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