关于Nastran嵌入式疲劳分析,如何开启疲劳参数设置的问题? 21
最近在看nastran Embedded Fatigue User's Guide书中的A simple S-N Analysis的例子,然后卡住了,得不到疲劳分析结果。
现将设置过程如下:
$ MSC.Nastran input file created on May 11, 2020 at 21:39:59 by
$ Patran 2019
$ Direct Text Input for Nastran System Cell Section
$ Linear Static Analysis, Database
SOL 101
CEND
TITLE = KEYHOLE NEF MODEL (A SIMPLE S-N ANALYSIS)
ECHO = NONE
SUBCASE 1
SUBTITLE=case
SPC = 2
LOAD = 6
DISPLACEMENT(SORT1,REAL)=ALL
SPCFORCES(SORT1,REAL)=ALL
STRESS(SORT1,REAL,VONMISES,BILIN)=ALL
$ Direct Text Input for this Subcase
BEGIN BULK
PARAM POST 1
PARAM PRTMAXIM YES
DTI UNITS 1 MPA
$ Elements and Element Properties for region : pshell.1
PSHELL 1 1 9.525 1 1
PFTG 1 NONE 1. 1. 0.
1.
$ Pset: "pshell.1" will be imported as: "pshell.1"
CQUAD8 1 1 1 3 23 21 2 15
22 14 0. 0.
……
CQUAD8 224 1 807 809 826 824 808 815
825 814 0. 0.
$ Referenced Material Records
$ Material Record : mat1.1
$ Description of Material :
MAT1 1 203403. 78231.7 .3
MATFTG 1 1.
STATIC 600. 99 -1. .137 .5
SN 8948. -.2 2.+8 0. 1.+30 .5
1. .16667
1. 0. 0. .6 0. .5
.6 0. .5 0. 0. 0.
$ Nodes of the Entire Model
GRID 1 63.8175 0. 0.
……
GRID 826 127. 3.175 0.
$ Loads for Load Case : case
SPCADD 2 1 4
LOAD 6 1. 1. 1
$ Displacement Constraints of Load Set : spc1.1
SPC1 1 2 1
……
SPC1 1 12 656
$ Displacement Constraints of Load Set : spc1.4
SPC1 4 345 1 THRU 213
……
SPC1 4 345 817 THRU 826
$ Nodal Forces of Load Set : force.1
FORCE 1 394 0 10000. 0. 1. 0.
$ Referenced Coordinate Frames
ENDDATA 23ae7f90
bdf文件中,缺少疲劳参数的设置,但是我已经操作了,是否有个开关在哪,没有打开么?
期待你的回复!
有人能够帮我看看嘛