DynaMech

class ansys.dyna.core.pre.dynamech.DynaMech(analysis=AnalysisType.EXPLICIT)

Bases: ansys.dyna.core.pre.dynabase.DynaBase

Defines a Mechanical analysis.

Overview

Methods

create_control_output	Set miscellaneous output parameters.
set_init_velocity	Define initial nodal point velocities using a nodal set ID.
create_defineorientation	Define orientation vectors for discrete springs and dampers.
create_shellset	Define a set of shell elements with optional identical or unique attributes.
create_solidset	Define a set of solid elements.
create_section_solid	Define section properties for solid continuum and fluid elements.
create_section_discrete	Defined spring and damper elements for translation and rotation.
create_hourglass	Define hourglass and bulk viscosity properties.
save_file	Save keyword files.

Attributes

casetype
analysis

Import detail

from ansys.dyna.core.pre.dynamech import DynaMech

Attribute detail

DynaMech.casetype

DynaMech.analysis = 1

Method detail

DynaMech.create_control_output(npopt=0, neecho=0)

Set miscellaneous output parameters.

Parameters:

npoptint, optional

Print suppression during the input phase flag for the D3HSP file. The default is 0. Options are:

• EQ.0: No suppression.

• EQ.1: Nodal coordinates, element connectivities, rigid wall definitions, nodal SPCs, initial velocities, initial strains, adaptive constraints, and SPR2/SPR3 constraints are not printed.

neechoint, optional

Print suppression during the input phase flag for the echo file. The default is 0. Options are:

• EQ.0: All data is printed.

• EQ.1: Nodal printing is suppressed.

• EQ.2: Element printing is suppressed.

• EQ.3: Both nodal and element printing is suppressed.

Returns:

bool

True when successful, False when failed.

DynaMech.set_init_velocity(translational=Velocity(0, 0, 0), rotational=RotVelocity(0, 0, 0))

Define initial nodal point velocities using a nodal set ID.

Parameters:

nsidint

Nodal set ID.

translationalVelocity

Initial translational velocity in the x,y,z-direction.

rotationalRotVelocity

Initial rotational velocity about the x,y,z-axis.

Returns:

bool

True when successful, False when failed.

DynaMech.create_defineorientation(vid, iop, vector, node1, node2)

Define orientation vectors for discrete springs and dampers.

Parameters:

vidint

Orientation vector ID.

iopint

Options are:

• EQ.0: Deflections/rotations are measured and forces/moments are applied along the following orientation vector.

• EQ.1: Deflections/rotations are measured and forces/moments are applied along the axis between the two spring/damper nodes projected onto the plane normal to the following orientation vector.

• EQ.2: Deflections/rotations are measured and forces/moments are applied along a vector defined by the following two nodes.

• EQ.3: Deflections/rotations are measured and forces/moments are applied along the axis between the two spring/damper nodes projected onto the plane normal to the a vector defined by the following two nodes.

vectorlist [x,y,z]

x,y,z : x,y,z-value of the orientation vector.

node1int

Node 1 ID.

node2int

Node 2 ID.

Returns:

bool

True when successful, False when failed.

DynaMech.create_shellset(option, title, sid, eids)

Define a set of shell elements with optional identical or unique attributes.

Parameters:

optionstr

Available options. Choices are ,``LIST``, and GENERAL.

titlestr

Title for the shell set.

sidint

Set ID.

eidslist

List of shell element IDs.

Returns:

bool

True when successful, False when failed.

DynaMech.create_solidset(title, sid, ki)

Define a set of solid elements.

Parameters:

titlestr

Title for the set of solid elements.

sidint

Set ID.

kilist

Solid element IDs.

Returns:

bool

True when successful, False when failed.

DynaMech.create_section_solid(title, secid, elform)

Define section properties for solid continuum and fluid elements.

Parameters:

titlestr

Title for section solid.

secidint

Section ID. SECID is referenced on the \*PART card. A unique number must be specified.

elformint

Element formulation options.

Returns:

bool

True when successful, False when failed.

DynaMech.create_section_discrete(secid, dro=0, kd=0, v0=0, cl=0, fd=0, cdl=0, tdl=0)

Defined spring and damper elements for translation and rotation.

Parameters:

secidint

Section ID.

droint, optional

Displacement/rotation. The default is 0. Options are:

• EQ.0: Material describes a translational spring/damper.

• EQ.1: Material describes a torsional spring/damper.

kdfloat, optional

Dynamic magnification factor. The default is 0.

v0float, optional

Test velocity. The default is 0.

clfloat, optional

Clearance. The default is 0.

fdfloat, optional

Failure deflection. The default is 0.

cdlfloat, optional

Deflection limit in compression. The default is 0.

td1float, optional

Deflection limit in tension. The default is 0.

Returns:

bool

True when successful, False when failed.

DynaMech.create_hourglass(ghid, ihq, qm=0.1, q1=1.5, q2=0.06, qb=1e-09, qw=1e-09)

Define hourglass and bulk viscosity properties.

Parameters:

ghidint

Hourglass ID. A unique number or label must be specified.

ihqint

Hourglass control type.

qmfloat, optional

Hourglass coefficient. The default is 0.1.

q1float, optional

Quadratic bulk viscosity coefficient. The default is 1.5.

q2float, optional

Linear bulk viscosity coefficient. The default is 0.06.

qbfloat, optional

Hourglass coefficient for shell bending. The default is 1e-09.

qwfloat, optional

Hourglass coefficient for shell warping. The default is 1e-09.

Returns:

bool

True when successful, False when failed.

DynaMech.save_file(defaultsetting=1)

Save keyword files.

Returns:

bool

True when successful, False when failed.