Element library file

The *.ein files defining the various element types used in PragTic are ASCII file. They are thus readable by users, although the users can only view them. Any new element type has to be added to the PragTic's source code so that it could be used. If you decide to build your own elements, you still have to e-mail me the resulting *.ein file, so that I could add it to the source code and compile it.

The *.ein file does not use any commentary signs. The following code is thus commented by nested lines in italic, which are added only to make it understandable. Note that the *.ein file uses comma separators. If a similar separator is necessary somewhere within the description of items, the use of semicolon instead of the comma is required.

NAME,CTRIA6,NASTRAN

key expression (name), name of the element, FE-package using this element type (currently one of ABAQUS, ANSYS, COSMOS, FEMAP, NASTRAN, UNDEFINED systems)

DSC,Curved triangular shell element connection

key expression (description), description of the element

FCS,6,5,21

key expression (summary of element faces), number of nodes, number of faces, total number of all occurences of nodes in the following FC records

FC,1,3,1,2,4

key expression (face description), order number of the face, number of nodes on it, 1-x th node (beware of their sequence)

PRMN, 6

key expression (summary of element parameters), number of parameters

PRM,1, THETA or MCID; THETA - Material property orientation angle in deg.; MCID - Material CS ID number

key expression (parameter description), order number of the parameter, parameter description (note - the parameters are not currently listed either in the element group description or in the real constants); beware of the use of semicolons in the description

OPN,4,29

key expression (option set description), number of optional parameters, total number of all options within the optional parameters of the option set

OP,1,4,0,Integration network

key expression (description of the optional parameter), order number of the optional parameter, number of its option values, the lowest order number of the option numbers, string description

OPV,1,0,Bubble function (<8 node>reduced shear with 2x2x2 integration; <p elem> reduced bubble of p-order)

key expression (option value description), order number of the related optional parameter, option number, string description

RCN,1

key expression (summary of element real constants), number of real constants

RC,1,CORDM - ID number of material coordinate system

key expression (real constant description), order number of the current real constant, its description

RESN,3

NOT USED NOW {key expression (summary of all components of the results), number of components for which are the results produced}

RES,1,1

NOT USED NOW {key expression (stress/strain result description), order number of the result, the order number at the list (sig_x, sig_y, sig_z, tau_x, tau_y, tau_z)}

RLCN,8

key expression (summary of all locations at which are the results given at each point), number of all results for this elements (one tensor ~ one result)

RLC,1,1,BOT

key expression (location of the result description, order number of the result within this element, order number of related node of this element, position specification (TOP, BOT, C, D, E, F)

END

key expression - two END expressions on separate lines to close the file

element library

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