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FRAME2Dexpress F.A.Q   
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2-dimensional static and dynamic analysis of frame structures
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FRAME2Dexpress is a program for static and dynamic analysis of 2-dimensional framed structures. Distributed or nodal dead and live loads can be specified. Load combination is used according to Eurocode 1, with user defined load combination coefficients. The program performs computation of internal forces and diagrams for displacements, bending moments, shear and axial forces. In the dynamic analysis the eigenfrequencies and the mode shapes are computed. Graphical output for the diagrams and mode shapes is displayed.
For educational purposes FREE Lite version.( Structure wizard and steel profiles not included in Lite version)

New upgraded version FRAME2Dexpress + EC Design

The program has been designed to be easy and fast in use.
  • The structure is defined by structure prototype wizard, with 21 ready types of frames or by giving the nodal coordinates and the element connectivity.
  • The graph of the structure appears simultaneously with the data you enter.
  • The support conditions are defined from graphical menu.
  • The cross sections are defined either with the area and inertia properties, or by their dimensions ( rectangular, T or L type sections).
  • For steel structures, lists of every nominal steel profile available with its properties.
  • Nodal loads have dead and live components.
  • Element distributed loads (uniform, triangular, parabolic), with dead and live components. The self weight may or may not be included. Element distributed load direction, vertical, horizontal or perpendicular to the elements.
  • The load combination coefficients may be defined by the user.
  • Material properties can be picked from menu.
  • Nodal masses corresponding to dead or live loading.
  • Mass combination coefficients for nodal masses or element distributed masses due to dead and live weight may be defined by the user.
  • In reports, the values of deformations are included in addition to bending moments, shear force and axial force in the diagrams of every element.
  • Units : Metric units.

FRAME2Dexpress New structure prototype wizard, with 21 ready types of frames.
  • Nodal points

The nodal points are defined through their x,y coordinates

  •   Elements

For every element with unique numbering the end nodal points and the cross section number are defined. The cross section number must be defined in the element cross section data. 

 

wiz3.gif (15457 bytes)

 

After choosing the type of structure it is easy to adjust the structure's materials and dimensions.

Materials: Concrete, Steel or timber

 

 

steel002.gif (57683 bytes)

 

 

  • For steel structures, lists of every nominal steel profile available with its properties.
 

  

 

  •  Element cross sections

The user can select structural material (e.g. general, concrete, steel, timber). The cross section can be defined by the area and moment of inertia, or by the dimensions b,h for orthogonal cross sections or by the dimensions b,b1,h,h1 for T type sections. The user can select the cross section units.

  • Support conditions

Nodal loads are easily defined for the corresponding nodes, from a graphical menu.

  • Nodal loads

Nodal forces are in the x, y direction in [kN], and nodal moments in kNm. The loads have dead and live components. The loading in the static analysis is taken as CgxFg+CqxFq, where Cg and Cq are the load combination coefficients. Default values are Cg=1.35 and Cq=1.50 (Eurocode 1, EC1).

  • Nodal masses

Lamped nodal masses, corresponding to dead or live loading.
The mass in the dynamic analysis are taken as CgxFg+CqxFq. Default values are Cg=1.00 and Cq=0.30 (Eurocode 1, EC1).

framescr05e.gif (9098 bytes)

framescr07e.gif (8233 bytes)

  • Element distributed loads

Element distributed loads, dead and live in kN/m. You can select among five different types of distributed loads from a menu. The kind of the distributed loads are: uniformly distributed, triangular with maximum value at the right or the left element end, symmetric triangular, and symmetric parabolic. You can also select the loading direction, perpendicular to element axis, vertical or horizontal, from a menu.
The loading in the static analysis is taken as CgxFg+CqxFq, where Cg and Cq are the load combination coefficients. Default values are Cg=1.35 and Cq=1.50 (Eurocode 1, EC1).

  • Element distributed masses

Distributed masses in structure elements corresponding to dead or live loading. The mass in the dynamic analysis are taken as CgxFg+CqxFq. Default values are Cg=1.00 and Cq=0.30 (Eurocode 1, EC1). You can select   to include the self-weight or not in the masses.

Static and dynamic analysis of  a model
frameres01.gif (6121 bytes) btstatan.jpg (1706 bytes)  Results of static analysis:
  • Nodal displacements
  • Displacements along each elements.
  • Internal forces at element ends in global and local coordinate system.
  • Internal forces (bending moments, shear and axial forces) along each element.
  • Diagrams of displacements.
  • Diagrams of deformations, bending moments, shear forces and axial forces.

frameres02.gif (7160 bytes)       frameres03.gif (6896 bytes)

 

frameres04.gif (6520 bytes)

 

btdynan.jpg (1968 bytes)  Results of dynamic analysis:
  • Natural frequencies
  • Diagrams of mode shapes
Static rapport   Preview

You can view, print, save to file and send to Word the reports.

printout of static analysis:

  • Nodal displacements
  • Displacements along each elements.
  • Internal forces at element ends in global and local coordinate system.
  • Internal forces (bending moments, shear and axial forces) along each element.
  • Diagrams of displacements.
  • Diagrams of bending moments, shear forces and axial forces.

printout of dynamic analysis:

  • Natural frequencies
  • Diagrams of mode shapes

Additional printouts

  • Stiffness and mass matrices.
  • Equilibrium equations
  • Eigenvalue equations

 btntools.jpg (2768 bytes) Engineering tools
  • Unit conversion
  • Area calculations
  • Section of properties (areas, mometns of inertia)
  • Calculation Rolled steel shapes
 


Revised: Μαΐου 11, 2016

  On line help

A context-sensitive Help system, guides you through the use of the program.

On-line user's manual and frequently asked questions (F.A.Q.) are included in the program.
 

User's manual included.

You can preview, or print the program user's manual. You can select to view it as a Word (doc) or as an Acrobat (pdf) document.

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