WHAT C.S.E. DOES
The current version of C.S.E. is able, in short and incomplete synthesis, to perform the following steps (also please look at the
audio lessons the mute films and the program card):
- Read into C.S.E. a
Sargon or Sap2000TM, or STAAD PROTM,
or MIDASTM, or RISA3DTM,
or STRAPTM fem model, or a FEM model written in the .SR4 file format, also finding automatically the members
of the structure (well different from finite elements). If the FEM model
has been solved, then internal forces will be used, in different load combinations,
to execute the checks.
- Otherwise, typical automatically-generated small fem models for typical nodes
are available (floors, portal frames, splice, beam-to-beam, beam-to-column, bracings, and more).
- Alternatively, freely create a FEM model inside C.S.E., by using
End releases, constraints, connection codes, offsets, orientation, materials, cross-sections,
may all be defined inside C.S.E. (independence from FEM programs). It is
also possible to create more complex FEM models. If no internal forces are
available from a FEM analysis, then the checks will
be performed using elastic or plastic limits conveniently factorized, or user-defined
internal forces values (copy and paste from EXCEL).
- Recognize automatically all the equal nodes (i.e. equal connections) within the structure, mark
them, and categorize them (detection of equal nodes).
- Have both in a listing and at screen, summary information useful to be the
starting point for the joint design. Particularly, for every node listed
one can have the envelopes of internal forces, keeping into account variation
of both combinations and instances (occurences) of the node
at hand. Thanks to this scheme you have quickly the internal forces from which
start for the checks (pre-analysis of nodes).
- Then, for each "node" you have to create a renode, i.e. a
real node. You will do that thanks to graphic, interactive commands (like
an electronic LEGOTM)
or thanks to an already prepared archive of parameterized typical connections
(786 families available at May 2015) which the user may further increase.
- Add components and work processes (cuts, bevels, face rotations and
translations) to a (re)node. You can add plates
(rectangular, trapezoidal, triangular, specially-shaped, many shapes available),
single or double angles, cross-sections trunks of any kind, constraint
blocks, shear keys... (free, interactive building of the renode
- Apply bolt layouts, managed with wide generality (rectangular bolt
matrices, simple or staggered, made perimetral too, concentric circles, rot-translation
of the bolt layout over the chosen face, free bolt positioning). In this phase the
internal distances and border distances checks are automatized. The bolts
can be shear-only, or tension-compression as well. Several computational methods
are possible (no slip bolts, with or without bearing surface, reacting
or not to compression, anchors...).
- Apply fillet or penetration welds layouts, also with non orthogonal faces, with automatic recognition of pertinent sides, of lengths and angles.
- Check for overlapping between 3D objects (overlapping check). Check renode logic (no matter its topology) pointing out components not joined, ill joints,
lack of connections (renode chains, check of connection effectiveness).
- Define new variables starting from pre-defined variables added automatically
by the program. Define conditions or checks with the most general
freedom, starting from pre-defined variables and user-variables. It is not necessary
to know any programming language, because variables and conditions are defined into
the program by specific tools (free definition of variables and conditions).
- Fully check (automatically) bolt layouts. Shear, tension/compression, parasitic bending if required, and their interaction (N, V,
M). Check slip connections. Check anchors. Check no-tension bearing support.
Check bolt layouts possibly also using no-tension bearing surfaces (flanges, base plates).
The bolt layout is checked under six forces (axial force, two shears, torque,
bending moments). No matter the space position of the bolt layout, its orientation,
absolute or relative, no matter the number of bolts and their actual layout, no
matter the number of layouts in the scene, applied to any component, the program
computes shear and traction forces in the bolts, at each thickness, and executes automatically
bearing stresses checks, punching shear checks, block-tear checks of each plates joined by the bolts.
More checks are also available (resistance, net-sections, FEM...). Automatic checking algorithms
can be driven by the user thanks to proper settings. The program can keep into account,
if required, parasitic bending acting over bolts, and is sensible to bolt diameter
(bolt checks, bearing pressure checks). If a bearing surface is defined the
program executes non linear computations with no-tension material for the bearing
- Fully check (automatically) fillet or penetration weld layouts, made up of an arbitrary
number of welds, no matter their placement, absolute or relative, the number of
weld layouts in the scene, applied to any couple of components among those present
in the scene, computing forces per unit length applied to each weld, and executing
automatically the checks (fillet and penetration welds check).
- Execute member net cross-section checks fully automatically (axial force
plus bending). automatic net sections check)
- Execute automatically simplified checks on throughs. (simplified through checks)
- Create automatically the finite element models of components (members, throughs) or of sets of components up to the whole node,
keeping into account work processes and stiffeners, so as to fine check their stress status. The models are ready to run (static
analysis, linear or non-linear, and buckling analysis. The forces applied model single bolts and single welds and, if present, the bearing surface actions
- Print a detailed listing with all the forces applied to each complete layout
(bolts and welds) and to each instance of the layout (single bolts and welds), with
all relevant results including those referred to components like members and throughs,
and those due to user checks. (listing).
Automatic creation of a report in ODT (Open Office) or ePUB format.
- Study connection displaced views (displaced).
- Execute the user-defined checks by adding variables and conditions, in every
load combination and renode instance. Add the results of these checks to the listing
and see their consequences in false colours on the screen (additional automatic user-checks).
- Execute a coherence check between the displacements levels allowed by the
connections designed in renode, and the end releases added in the finite element
model (displacement coherence checks).
- For the checks executed using elastic and plastic limits or user values (i.e. not using
imported fem results), create automatically proper limit-forces combinations,
to be applied to members one by one, so as to prove renode effectiveness in different
fictitious load states (fictitious automatic combinations of limit forces).
- For FEM checks, execute automatically the maximum stress check of component
in every instance of the renode and in every load combination defined in the fem
model, or in every fictitious load combinations (fem combinations check).
- Export a 3D DXF file with the description of the renode with all its components (export to CAD).
Take a look at films and program card