A Finite Element Program (FECGS): Post-Processor FEPOST - GKSS

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2 PREFACE FECGS is a finite element program system (hereafter, program) which includes an implicit FE code for stress analysis and crack growth simulation using micromechanical models, e.g. the cohesive zone model and the Gurson model, a pre-processor (FEMESH) and a post-processor (FEPOST). The program is specially developed for the purpose of fracture mechanics analysis. However, the applicability of the program is rather general. The program is for academic and research purpose only. The program is provided “as is” without express or implied warranty. The author assumes no responsibility for any errors that may appear using any part of the program. However, any comments, suggestions and bug reports are appreciated. FEPOST is also able to access ABAQUS result file (.fil). This manual provides the basic reference document for FEPOST. Point of contact: Guoyu Lin Institute of Materials Research GKSS Research Center D-21502 Geesthacht Germany Tel: 49-4152-872539 Fax: 49-4152-872534 E-mail: guoyu.lin@gkss.de
Contents 1 GENERAL FEATURES 3 1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Command entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.3 Definition of the coordinate system . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.4 Executing FEPOST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 INPUT, OUTPUT AND PLOT FILES 7 2.1 FEPOST input file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.2 FEPOST output file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.3 FEPOST plot file, graphic display and translation . . . . . . . . . . . . . . . . . 9 2.4 Color definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3 COMMAND DESCRIPTION 11 3.1 *CONTOUR: Drawing contour plots . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.1.1 *DETAIL: Defining a part of the model . . . . . . . . . . . . . . . . . . . 14 3.1.2 *HISTORY: Selecting time increments . . . . . . . . . . . . . . . . . . . . 15 3.1.3 *NORMALIZE: Normalizing the coordinates . . . . . . . . . . . . . . . . 16 3.1.4 *LEVEL: Defining the contour level . . . . . . . . . . . . . . . . . . . . . 17 3.1.5 *REF LENGTH: Drawing a reference scale . . . . . . . . . . . . . . . . . 18 3.1.6 *DRAW CRACK: Drawing current crack . . . . . . . . . . . . . . . . . . 19 3.1.7 *DRAW CZM: Drawing the cohesive zone in the contour plot . . . . . . . 21 3.2 *CRACK: Calculating the crack extension . . . . . . . . . . . . . . . . . . . . . . 22 3.3 *DEFORM: Drawing the deformed mesh . . . . . . . . . . . . . . . . . . . . . . . 24 3.3.1 *DETAIL: Creating a part of the model . . . . . . . . . . . . . . . . . . . 25 3.3.2 *HISTORY: Selecting the time increments . . . . . . . . . . . . . . . . . . 26 3.3.3 *COLOR TABLE: Defining a color table . . . . . . . . . . . . . . . . . . 27 3.4 *EL REMOVE: Removing the element from the model . . . . . . . . . . . . . . . 28 3.5 *END POST: End command input . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Page 1: A Finite Element Program (FECGS): P
Page 5 and 6: Chapter 1 GENERAL FEATURES 1.1 Intr
Page 7 and 8: 1.2. COMMAND ENTRY 5 1.2 Command en
Page 9 and 10: Chapter 2 INPUT, OUTPUT AND PLOT FI
Page 11 and 12: 2.3. FEPOST PLOT FILE, GRAPHIC DISP
Page 13 and 14: Chapter 3 COMMAND DESCRIPTION
Page 15 and 16: 3.1. *CONTOUR: DRAWING CONTOUR PLOT
Page 25 and 26: 3.2. *CRACK: CALCULATING THE CRACK
Page 27 and 28: 3.3. *DEFORM: DRAWING THE DEFORMED
Page 29 and 30: 3.3. *DEFORM: DRAWING THE DEFORMED
Page 31 and 32: 3.5. *END POST: END COMMAND INPUT 2
Page 33 and 34: 3.7. *NORMALIZE: NORMALIZING THE ST
Page 35 and 36: 3.9. *PARAMETER: GENERATING A TABUL
Page 49 and 50: 3.10. *PATH: CALCULATING THE RESULT
Page 51 and 52: 3.10. *PATH: CALCULATING THE RESULT
Page 53 and 54:
3.10. *PATH: CALCULATING THE RESULT
Page 55 and 56:
3.11. *PLOT MESH: DRAWING THE FE ME
Page 57 and 58:
3.12. *Q-STRESS: EVALUATING THE Q-S
Page 59 and 60:
Chapter 4 LIST OF VARIABLES AND ELE
Page 61 and 62:
Chapter 5 QUANTITY DEFINITIONS 5.1
Page 63:
5.3. THE WEAKEST LINK MODEL 61 5.3
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A Finite Element Program (FECGS): Post-Processor FEPOST - GKSS

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