Download Mars Manual

[1] The Verbose command should be used only for small problems and is intended for
debugging purposes. When ’Verbose’ is entered, Mars will print a detailed status of all
the particles interacting with each of the fiber elements. elements.
[2] The EquilibratedArea command is used for computing the interaction areas
using the criteria described in the notes.
[3] The TiledAreas command computes interaction areas by subdividing the cylindrical surface of the fiber/rebar into tiles in the axial and cylindrical direction. Each
area is assigned to one of the particle-edge contraints. The integer following the keyword
indicates the number of areas in the hoop direction. The number of areas in the axial
directions is computed by using the equation:
[4] The DisableInternalFacets is an optional command for disabling the LDPM
facets whose centers lay inside the cylindrical volume of the fibers. These facets will not
contribute any internal force.
nA = L/(2πR/nH
where R is the fiber radius, L is element length, and nH is the number of circumferential areas specified above via input.
Warning: If an element is partially embedded in concrete, Mars distributes its whole
surface areas to the particles interacting with that element. On the ’to do’ list, there
is the action item for computing what portion of a partially embedded fiber element is
inside the concrete. If fibers are entirely embedded in concrete, this current formulation
is adequate. For single fiber pull-out tests, subdivide a fiber so that there are no elements
that are partially embedded: in other words, a node of the fiber sequence should just be
slightly outside the concrete surface.
15.9
Bolt List
BoltList BLTS {
#-- abbreviated notations in < > brackets
Material STEL
Diameter 0.3 in
StemLength 1.0 in
BeamInStem 4
HeadThickness 0.2 in
HeadDiameter 0.6 in
#-- if bolts are entered explicitly
num 345
LengthUnits in
lst
// c0x, c0y c0z: origin of the stem
// len: length of the stem
// dcx, dcy, dcz: direction of the stem
// n: number of beam elements along the stem
// j
c0x c0y c0z len dcx dcy dcz
n
1
0.0 10.
1. 0.6
1.
0.
0.
3
. . .
146