在例题Superplastic forming of a rectangular box中,变形板的材料定义为
The flow stress is assumed to depend on the plastic strain rate according to
where A is 179.2 MPa (26. × 103 lb/in2) and the time is in seconds.
但是在inp文件中材料的定义却为
*MATERIAL, NAME=SUPRAL
*ELASTIC
10.3E6, .34
*CREEP, LAW=TIME
1.48E-9, 2., 0.