ASIFEM3 is a finite element code for framed structures using the ASI technique
(cubic beam element version), which is proposed in Toi Lab., University
of Tokyo, developed and modified in Isobe Lab., University of Tsukuba.
Memory use and computational cost is minimized since it subdivides one
structural member with only one Bernoulli-Euler beam element (cubic beam
element). Highly accurate solutions and their convergencies are guaranteed.
Basic loading problems for elastic/elasto-plastic, static/dynamic, infinitesimal/finite
deformation, truss/rahmen structures can be analyzed. Total Lagrangian
Formulation (T.L.F.) and Updated Lagrangian Formulation (U.L.F.) are both
implemented as nonlinear incremental theories. Member fracture and elemental
contact are not considered. Please read user's manual before operation.
asifem3_e.zip ・・・ Compressed file 691KB (unpack after download)
Files compressed in asifem3_e.zip
asifem3_v1_3.exe ・・・Numerical code execution file (ASIFEM3 Ver.1.3)
input3.txt ・・・Input data file
output.txt，post.out，eqs.out ・・・Output data files
manual3_e.pdf ・・・User's manual
Graphic.exe ・・・Graphic software execution file (using post.out, eqs.out as input files)
color_range.txt ・・・Color range file for graphic software
glut32.dll ・・・Dynamic library for graphic software
manual(Graphic.exe)_e.txt ・・・User's manual for graphic software
*Prof. Isobe and his collaborators have no obligation of whatsoever against the results of using the ASIFEM3 code.
The numerical code and user's manuals are to be revised without notice.
2008.2.14 revised: Input function for torsional coefficient is added. Modified for various compilers. (Ver.1.10)
2008.9.4 revised: Precision option is added. (Ver.1.20)
2017.3.23 revised: Changed number of iterations, and made the executive file using updated compiler. (Ver.1.3)
2017.6.18 revised: Graphic software "iGraphic.exe" is added.
2020.6.10: The source code is now open for free download.
ASIFEM3 Ver.1.3 download (compressed file 1.1MB)
Source code download (compressed file 14KB) *Theories are shown in "Progressive Collapse Analysis of Structures: Numerical Codes and Applications, Elsevier, eBook ISBN: 9780128130421, Paperback ISBN: 9780128129753, 2017". Elsevier
ASI technique reference site: