CUFSM is the Constrained and Unconstrained Finite Strip Method and was originally developed by Ben Schafer in 1997. For an arbitrary thin-walled cross-section CUFSM can efficiently provided all cross-section and member elastic buckling modes and loads for any applied end action (compression, bending, warping, etc.). 

CUFSM provides both the semi-analytical finite strip method for creation of the cross-section signature curve as well as the generalized finite strip method for other end boundary conditions (e.g. clamped ends). Uniquely, CUFSM provides a complete implementation of the constrained finite strip method which allows the user to perform quantitative modal decomposition and identification which, e.g., provides a precise means to separate local, distortional, and global buckling modes in thin-walled members.

CUFSM includes tools for generalized beam-column loading and analysis. A number of supplementary tools have been added to CUFSM including development of plastic surfaces for cross-sections under arbitrary load, independent global buckling analysis with classical beam formula, and an interface to generate ABAQUS input files with cross-section imperfections based on CUFSM buckling modes.

CUFSM is maintained by the Thin-walled Structure Group of Prof. Ben Schafer. CUFSM is open source and free, as a result, comprehensive support is not provided.

* CUFSM download link provides gnu general public license version of the software.

Properties and Stresses of Thin-Walled Cross-Sections

SHAPE‑THIN determines section properties of any thin-walled cross‑section and calculates the stresses. In addition, you can perform plastic design.

Elastic and Plastic Resistance of Open and Thin Walled Sections

Thinwallres Open&Closed application allows to determine the resistance capacity of open and closed thin-walled sections

Structural Cross Sections (concrete, steel, composite etc.)

Cross Section Analysis and Design can handle structural cross sections that are built up of one or more geometric entities and can be drawn directly using the versatile featured user interface.

Design and analysis of custom cross section profiles

CADRE Profiler is used to design section profiles and determine their geometric properties for custom beam cross sections which can be composed of different materials

Thin Walled Sections Analysis

ThinWallSections is a software tool for analysis of multi-cell thin-wall sections. Runs Stand Alone and also Integrates tightly with Excel and Matlab.

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