Product: ABAQUS/Standard
Young's modulus = 200 × 103 N/mm2, Poisson's ratio = 0.3, Creep law: 
= A
, A = 3.125 × 10–14 per hour (
in N/mm2), n = 5.
Boundary conditions:
on line AD and 
on line AB.
Loading:
Prescribed tensile stress 
= 200 N/mm2 on line BC and 
= 100 N/mm2 on line CD.
This is a test recommended by the National Agency for Finite Element Methods and Standards (U.K.): Test 5(a) from NAFEMS Publication Ref: R0027, “NAFEMS Fundamental Tests of Creep Behaviour,” June 1993.
The time marching program provided in Appendix A of the NAFEMS Publication can be used to obtain the stress variation with time.
The results are shown in the following table. The values enclosed in parentheses are percentage differences with respect to the reference solution.
| ABAQUS Results | ||
|---|---|---|
| t |  |  |
| 0.00 | 0.0000 (0.00%) | 0.0000 (0.00%) |
| 8.46 | 0.0014 (–1.04%) | –0.0010 (0.60%) |
| 43.01 | 0.0059 (–0.17%) | –0.0056 (–0.19%) |
| 107.58 | 0.0145 (–0.08%) | –0.0142 (–0.09%) |
| 365.86 | 0.0485 (–0.02%) | –0.0482 (–0.02%) |
| 710.23 | 0.0939 (0.00%) | –0.0936 (0.00%) |
| 1000.00 | 0.1321 (0.00%) | –0.1318 (0.00%) |
