ABAQUS-DAT-教案.doc

Abaqus 6.14-1 Date 31-3月-2018 Time 20:17:44
For use by Supplied By SSQ under license from Dassault Systemes or its subsidiary.

*Heading
*Node
*Element, type=S4R
*Nset, nset=ASSEMBLY_PART-1-1__PICKEDSET2
*Elset, elset=ASSEMBLY_PART-1-1__PICKEDSET2
*Nset, nset=ASSEMBLY__PICKEDSET4
*Elset, elset=ASSEMBLY__PICKEDSET4
*material, name=MATERIAL-1
*density
*elastic
*shellsection, elset=ASSEMBLY_PART-1-1__PICKEDSET2, material=MATERIAL-1
*boundary
*shellsection, elset=ASSEMBLY_PART-1-1__PICKEDSET2, material=MATERIAL-1
*output, field, variable=PRESELECT
*output, field, variable=PRESELECT
*output, field, variable=PRESELECT
*Step, name=Step-1, nlgeom=NO, perturbation
*frequency, eigensolver=LANCZOS, normalization=DISPLACEMENT, acousticcoupling=ON
*output, field, variable=PRESELECT
*Step, name=Step-1, nlgeom=NO, perturbation
*Step, name=Step-1, nlgeom=NO, perturbation
*frequency, eigensolver=LANCZOS, normalization=DISPLACEMENT, acousticcoupling=ON
*frequency, eigensolver=LANCZOS, normalization=DISPLACEMENT, acousticcoupling=ON
*boundary
*output, field, variable=PRESELECT
*endstep
*Step, name=Step-1, nlgeom=NO, perturbation
*frequency, eigensolver=LANCZOS, normalization=DISPLACEMENT, acousticcoupling=ON
*frequency, eigensolver=LANCZOS, normalization=DISPLACEMENT, acousticcoupling=ON
*boundary
*endstep

P R O B L E M S I Z E
NUMBER OF ELEMENTS IS 120
NUMBER OF NODES IS 140
NUMBER OF NODES DEFINED BY THE USER 140
TOTAL NUMBER OF VARIABLES IN THE MODEL 840
(DEGREES OF FREEDOM PLUS MAX NO. OF ANY LAGRANGE MULTIPLIER
VARIABLES. INCLUDE *PRINT,SOLVE=YES TO GET THE ACTUAL NUMBER.)

END OF USER INPUT PROCESSING
JOB TIME SUMMARY
USER TIME (SEC) = 0.10000
SYSTEM TIME (SEC) = 0.0000
TOTAL CPU TIME (SEC) = 0.10000
WALLCLOCK TIME (SEC) = 0
STEP 1 INCREMENT增量 1
TIME COMPLETED IN THIS STEP 0.00

S T E P 1 C A L C U L A T I O N O F E I G E N V A L U E S
F O R N A T U R A L F R E Q U E N C I E S
THE LANCZOS EIGENSOLVER IS USED FOR THIS ANALYSIS
Abaqus WILL COMPUTE UNCOUPLED
STRUCTURAL AND ACOUSTIC MODES
NUMBER OF EIGENVALUES本征值数目 30
HIGHEST FREQUENCY OF INTEREST 1.00000E+18
MAXIMUM NUMBER OF STEPS WITHIN RUN 35
BLOCK SIZE FOR LANCZOS PROCEDURE 7
THE EIGENVECTORS ARE SCALED SO THAT
THE LARGEST DISPLACEMENT ENTRY IN EACH VECTOR
IS UNITY
THIS IS A LINEAR PERTURBATION STEP.
ALL LOADS ARE DEFINED AS CHANGE IN LOAD TO THE REFERENCE STATE

TOTAL MASS OF MODEL模型总质量
2.1226427E-03
LOCATION OF THE CENTER OF MASS OF THE MODEL

6.3234491E-14 1.1645771E-14 0.000000

MOMENTS OF INERTIA ABOUT THE ORIGIN
I(XX) I(YY) I(ZZ)

66.48704 66.48704 132.9740

PRODUCTS OF INERTIA ABOUT THE ORIGIN
I(XY) I(XZ) I(YZ)

8.8817842E-16 0.000000 0.000000

MOMENTS OF INERTIA ABOUT THE CENTER OF MASS
I(XX) I(YY) I(ZZ)

66.48704 66.48704 132.9740

PRODUCTS OF INERTIA ABOUT THE CENTER OF MASS
I(XY) I(XZ) I(YZ)

8.8817842E-16 0.000000 0.000000

M E M O R Y内存 E S T I M A T E

PROCESS FLOATING PT MINIMUM MEMORY MEMORY TO
OPERATIONS REQUIRED MINIMIZE I/O
PER ITERATION (MB) (MB)
每个迭代的浮动PT操作 最低内存所需(MB) 内存最小化I/O (MB)
1 5.53E+006 16 26

NOTE:
(1) SINCE ABAQUS DOES NOT PRE-ALLOCATE MEMORY AND ONLY ALLOCATES MEMORY AS NEEDED DURING THE ANALYSIS, 因为ABAQUS不预先分配内存，并且只在分析时根据需要分配内存。
THE MEMORY REQUIREMENT PRINTED HERE CAN ONLY BE VIEWED AS A GENERAL GUIDELINE BASED ON THE BEST KNOWLEDGE AVAILABLE AT THE BEGINNING OF A STEP BEFORE THE SOLUTION PROCESS HAS BEGUN. 这里打印的内存需求只能被看作是基于在解决方案开始之前的步骤开始时可用的最佳知识的一般指导方针。
(2) THE ESTIMATE IS NORMALLY UPDATED AT THE BEGINNING OF EVERY STEP. IT IS THE MAXIMUM VALUE OF THE估计通常在每一步开始时更新。它是最大值。
ESTIMATE FROM THE CURRENT STEP TO THE LAST STEP OF THE ANALYSIS, WITH UNSYMMETRIC SOLUTION TAKEN INTO ACCOUNT IF APPLICABLE. 从当前步骤到分析最后一步的估计，如果适用，考虑到不对称的解决方案。
(3) SINCE THE ESTIMATE IS BASED ON THE ACTIVE DEGREES OF FREEDOM IN THE FIRST ITERATION OF THE CURRENT STEP, THE MEMORY ESTIMATE MIGHT BE SIGNIFICANTLY DIFFERENT THAN ACTUAL USAGE FOR PROBLEMS WITH SUBSTANTIAL CHANGES IN ACTIVE DEGREES OF FREEDOM BETWEEN STEPS (OR EVEN WITHIN THE SAME STEP). EXAMPLES ARE: PROBLEMS WITH SIGNIFICANT CONTACT CHANGES, PROBLEMS WITH MODEL CHANGE, PROBLEMS WITH BOTH STATIC STEP AND STEADY STATE DYNAMIC PROCEDURES WHERE ACOUSTIC ELEMENTS WILL ONLY BE ACTIVATED IN THE STEADY STATE DYNAMIC STEPS. 由于估计是基于当前步骤的第一次迭代中的活动自由度，因此内存估计可能与实际使用的问题有很大的不同，因为在步骤之间(甚至在相同的步骤中)的活动自由度发生了实质性的变化。例子是:重要的接触变化的问题，模型变化的问题，静态步骤和稳态动态过程的问题，在这些过程中，声音元素只会在稳态的动态步骤中被激活。
(4) FOR MULTI-PROCESS EXECUTION, THE ESTIMATED VALUE OF FLOATING POINT OPERATIONS FOR EACH PROCESS IS BASED ON AN INITIAL SCHEDULING OF OPERATIONS AND MIGHT NOT REFLECT THE ACTUAL FLOATING POINT OPERATIONS COMPLETED ON EACH PROCESS. OPERATIONS ARE DYNAMICALLY BALANCED DURING EXECUTION, SO THE ACTUAL BALANCE OF OPERATIONS BETWEEN PROCESSES IS EXPECTED TO BE BETTER THAN THE ESTIMATE PRINTED HERE. 对于多进程执行，每个流程的浮点操作的估计值是基于初始的操作调度，并且可能不反映每个流程上完成的实际浮点操作。在执行过程中，操作是动态平衡的，因此，流程之间的实际操作平衡应该比这里打印的估计要好。
(5) THE UPPER LIMIT OF MEMORY THAT CAN BE ALLOCATED BY ABAQUS WILL IN GENERAL DEPEND ON THE VALUE OF THE "MEMORY" PARAMETER AND THE AMOUNT OF PHYSICAL MEMORY AVAILABLE ON THE MACHINE. PLEASE SEE THE "ABAQUS ANALYSIS USER'S MANUAL" FOR MORE DETAILS. THE ACTUAL USAGE OF MEMORY AND OF DISK SPACE FOR SCRATCH DATA WILL DEPEND ON THIS UPPER LIMIT AS WELL AS THE MEMORY REQUIRED TO MINIMIZE I/O. IF THE MEMORY UPPER LIMIT IS GREATER THAN THE MEMORY REQUIRED TO MINIMIZE I/O, THEN THE ACTUAL MEMORY USAGE WILL BE CLOSE TO THE ESTIMATED "MEMORY TO MINIMIZE I/O" VALUE, AND THE SCRATCH DISK USAGE WILL BE CLOSE-TO-ZERO; OTHERWISE, THE ACTUAL MEMORY USED WILL BE CLOSE TO THE PREVIOUSLY MENTIONED MEMORY LIMIT, AND THE SCRATCH DISK USAGE WILL BE ROUGHLY PROPORTIONAL TO THE DIFFERENCE BETWEEN THE ESTIMATED "MEMORY TO MINIMIZE I/O" AND THE MEMORY UPPER LIMIT. HOWEVER ACCURATE ESTIMATE OF THE SCRATCH DISK SPACE IS NOT POSSIBLE. 可以由ABAQUS分配的内存上限通常取决于“内存”参数的值和机器上可用的物理内存的数量。详情请参阅“ABAQUS分析用户手册”。
内存和磁盘空间对SCRATCH数据的实际使用将取决于这个上限以及最小化I/O所需的内存。如果内存上限大于最小化I/O所需的内存，那么实际内存使用量将接近“内存最小化I/O”的值，而擦除磁盘的使用将接近于零;否则，所使用的实际内存将接近前面提到的内存限制，而SCRATCH磁盘的使用将大致与估计的“内存最小化I/O”和内存上限的差异成比例。但是，不可能准确地估计出划片的空间。
(6) USING "*RESTART, WRITE" CAN GENERATE A LARGE AMOUNT OF DATA WRITTEN IN THE WORK DIRECTORY. 使用“*RESTART, WRITE”可以生成在工作目录中写入的大量数据。

E I G E N V A L U E O U T P U T特征值输出

MODE NO EIGENVALUE特征值 FREQUENCY频率 GENERALIZED MASS 广义质量 COMPOSITE MODAL DAMPING 复合模态阻尼 (RAD/TIME) (CYCLES/TIME)

1 1511.1 38.872 6.1867 4.32930E-04 0.0000
2 1511.1 38.872 6.1867 4.32930E-04 0.0000

P A R T I C I P A T I O N F A C T O R S参与系数：反应该阶振型在哪个自由度上起主导作用

MODE NO X-COMPONENT分量 Y-COMPONENT Z-COMPONENT X-ROTATION转角 Y-ROTATION Z-ROTATION

1 2.25523E-17 -2.91262E-17 1.09627E-10 201.57 -323.11 3.03194E-15
2 -1.30596E-17 4.69871E-17 2.79126E-10 323.11 201.57 -1.34412E-14

E F F E C T I V E M A S S 有效质量：反映了该阶振型在各个自由度上所激活的质量

MODE NO X-COMPONENT Y-COMPONENT Z-COMPONENT X-ROTATION Y-ROTATION Z-ROTATION
1 2.20190E-37 3.67268E-37 5.20301E-24 17.590 45.197 3.97977E-33
2 7.38372E-38 9.55817E-37 3.37302E-23 45.197 17.590 7.82155E-32
TOTAL 3.60397E-32 1.56532E-32 2.04600E-03 63.677 63.677 1.92495E-26
THE ANALYSIS HAS BEEN COMPLETED
ANALYSIS COMPLETE

JOB TIME SUMMARY
USER TIME (SEC) = 0.50000
SYSTEM TIME (SEC) = 0.0000
TOTAL CPU TIME (SEC) = 0.50000
WALLCLOCK TIME (SEC) = 1