abaqus用户分析手册（5卷）.PDF

节选段落一：
Printed on: Tue February 24 -- 9:57:23 2009
CONTENTS
5.


节选段落二：
Input File Usage: *AMPLITUDE, NAME=name, DEFINITION=DECAY
Abaqus/CAE Usage: Load or Interaction module: Create Amplitude: Decay
0
1
2
3
4
10 2 3 4 5 6 7 8 9 10
5
Time
a
( x 10-1)
a = A0 + A exp [−(t−t0) / td] for t ≥ t0
a = A0 for t < t0
A0 = 0.0, A = 5.0,


节选段落三：
t
3
= 0.3 A
3
= 0.5
t
4
= 0.4 A
4
= 0.5 t
5
= 0.5 A
5
= 0.2 t
6
= 0.8 A
6
= 0.2
Figure 29.1.2–6 Smooth step amplitude de�nition example with multiple data points.