动力学-2.pdf

节选段落一：
*DYNAMIC, APPLICATION=QUASI-STATIC
Step module: Create Step: General: Dynamic, Implicit
Basic: Application: Transient fidelity, Moderate dissipation, Quasi-static, or Analysis product default
*DYNAMIC, SINGULAR MASS=ERROR
*DYNAMIC, SINGULAR MASS=WARNING
*DYNAMIC, SINGULAR MASS=MAKE ADJUSTMENTS
Page 2


节选段落二：
Allowable values of , , and are: ,
, .
β
*DYNAMIC, TIME INTEGRATOR=HHT-TF
*DYNAMIC, TIME INTEGRATOR=HHT-MD
*DYNAMIC, TIME INTEGRATOR=BWE
α
β
γ
α
β = 1/4 ⋅ (1 − α)2 γ = 1/2 − α
α
α = 0
β β = 1/4 γ = 1/2 α = −1/3
α β γ − ≤ α ≤ 01
2
β > 0 γ ≥ 1
2
Page 3 of 10Implicit dynamic analysis using direct


节选段落三：
Meguid, “Optimal Time Integration Parameters for Elastodynamic
Contact Problems,” Communications in Numerical Methods in Engineering, vol. 17, pp. 379–384, 2001.
n = 1, 2, 3
n = 1, 2, 3
n = 1, 2, 3
n = 1, 2, 3
n = 1, 2, 3
n = 1, 2, 3
ij i ≤ j ≤ 3
*HEADING
…
*BOUNDARY
Data lines to specify zero-valued