F S t r
Finite Strip Computer Application
The FStr computer application program is based on the Finite Strip Method and gives to the user an easy and intuitive elastic buckling analysis, allowing access to the buckling mode shape of thin-walled structural member. Besides the generation of the 2D and 3D buckling modes illustration, the user is able to obtain the critical buckling load and its related member length.
What is FStr?
FStr stands for, Finite Strip Computer Application based on trigonometric longitudinal functions;
FStr is a software developed on the basis of the Finite Strip Method formulation;
The formulation uses trigonometric functions in longitudinal direction in series, with the purpose of interpolate the solution inside the strip, and form a shape suitable to any type of end boundary condition;
Signature curves are one type of analyze the results, through a set of longitudinal lengths. Then, the user can analyze the critical modes in any critical length;
3D buckling modes, with colorful plots, helps the user to identify the critical buckling mode easily.
Easy and intuitive interface
The Graphical User Interface (GUI) is implemented in the MATLAB App Designer (MATHWORKS, 2000). The purpose of the GUI is to make it easier to the user to set up the data input and to analyze the data output.
The FStr has an accessible and easy graphical user interface, and is conceived to attend research activities as well as engineering design of thin-walled structures with arbitrary cross-sections.
Graphical User Interface Description
- Coordinates Panel:
- Elements Panel:
- Orthotropic Material Panel:
- Loading:
- Automatic Cross-section generation:
- End Boundary Condition:
- C-C: Clamped-Clamped (Fixed-Fixed);
- S-S: Simply-Simply (Pinned-Pinned);
- C-S: Clamped-Simply (Fixed-Pinned);
- C-G: Clamped-Guided (Fixed-Guided);
- C-F: Clamped-Free (Fixed-Free).
- Half-wave terms for trigonometric series:
- Longitudinal set of Lengths:
- " logspace(1,4,200) " : Log spaced vector from 10^1 to 10^4, with 200 lengths;
- " 10:100:10000 " : Linear spaced vector from 10 to 10000, with increment of 100;
- " linspace(10,10000,200) " : Linear spaced vector from 10 to 10000, with 200 lengths;
- Dynamic 2D cross-section geometry
- About the FStr Computer Application
- Elastic Buckling Analysis Button
- Number of superior modes displayed:
- Load Factor:
- Selection of Superior Modes
- Signature Curve and Superior Modes:
- Dynamic 2D Modal Shape:
- Save:
- Selection of Longitudinal Length
- Mode Scale and Interpolation points changer
- 3D Modal Shape for the selected Length