Introduction:
This post is part of a two workshop series focused on using the FEAMAC-PrePost plug-in with NASA's FEAMAC multiscale software. This workshop tutorial can be completed in its entirety with or without access to the FEAMAC software. Readers are encouraged to first view the <introductory page> and have completed the first workshop example <here>.
Problem Overview:
This second workshop tutorial presents the multiscale analysis of a carbon fiber reinforced composite laminate plate loaded under uniaxial tension. The composite laminate is comprised of 14 layers with a stacking sequence of [45/02/-45/02/90]S, where the subscript S denotes symmetry. The laminate contains a notch to provide a stress concentration to initiate failure. Each layer is a unidirectional lamina whose thickness is 0.0065”. The material is a fiber reinforced polymer (FRP) composite used for aerospace applications. The fiber is a high strength T800 carbon fiber, and the matrix material is a toughened epoxy (3900-2). The fiber volume fraction of the unidirectional lamina is assumed to be 54%. In this workshop example, the composite laminate is modeled using conventional S4R shell elements with composite shell sections to define the laminate stacking. Progressive failure of the composite is assumed to be a function of evolving damage of the individual fiber and matrix constituents. Failure criteria will be specified at the constituent scale, and the FEAMAC subroutine will be utilized to compute the each unidirectional lamina response and to post-process the damage predictions.
Instructions and Files:
First, we've included a sample of the FEAMAC-PrePost plug-which is contained in the ZIP files below. The plug-in is Abaqus version dependent, so download "FEAMAC-PrePost 6.14.zip" or "FEAMAC-PrePost 6.13.zip" depending on your current version of Abaqus. In order to begin the workshop tutorial, download the ZIP file and extract its contents into the desired working directory. (If this directory has already been downloaded for the first workshop example, the step can be skipped).
Next, the second ZIP file (Workshop Two.zip) contains the actual workshop job files. These include:
- Helpful ReadMe guide (ReadMe.TXT)
- Abaqus input file (INP)
- Workshop documentation (PDF)
- Completed Abaqus output database, Abaqus Version 6.14 (WorkshopTwo_mac0.odb)
- Completed Abaqus output database, Abaqus Version 6.13 (WorkshopTwo613_mac0.odb)
- FEAMAC-PrePost mapping files (SET) -- There are two; one for each Abaqus 6.13 and 6.14
Download the attached Workshop Two.zip file and extract the contents into the desired working directory, then follow the instructions in the included ReadMe.txt file.
