Adams Car Package > Adams Car Ride > Working with Components > General Frequency-Dependent Element

General Frequency-Dependent Element

Component Name

ac_general_f_d_element

Description

This component is a six degrees-of-freedom force, having each component modeled by three linear springs and three linear dampers; the elements of the single component can be connected in different ways and eventually deactivated to create the following:

1. Linear Pfeffer element (one spring in parallel with a series damper - parallel spring damper)

2. Simple FD damper (one spring in parallel with a series spring damper)

3. Simple FD bushing (one spring in series with a parallel spring damper)

4. General element (one parallel spring damper in parallel with a series of two parallel spring dampers)

You can also specify a preload for each force component.

Using the replace feature in Standard Interface, you can create a general frequency-dependent element as a replacement for a standard Adams Car bushing. In the replacement element dialog box, select a property file, setting preload, and activity for each component.

Specification

.ARIDE.attachments.ac_general_f_d_element

Parameters

Parameter:	Type:	Function:
property_file	string variable	Name of property file
X_type	string variable	X component element type
T_preload_x	real variable	Element translational preload x
X_C1	real variable
X_K1	real variable
X_C2	real variable
X_K2	real variable
X_C3	real variable
X_K3	real variable
Y_type	string variable	Y component element type
T_preload_y	real variable	Element translational preload y
Y_C1	real variable
Y_K1	real variable
Y_C2	real variable
Y_K2	real variable
Y_C3	real variable
Y_K3	real variable
Z_type	string variable	Z component element type
T_preload_z	real variable	Element translational preload z
Z_C1	real variable
Z_K1	real variable
Z_C2	real variable
Z_K2	real variable
Z_C3	real variable
Z_K3	real variable
AX_type	string variable	AX component element type
R_preload_x	real variable	Element rotational preload x
AX_C1	real variable
AX_K1	real variable
AX_C2	real variable
AX_K2	real variable
AX_C3	real variable
AX_K3	real variable
AY_type	string variable	AY component element type
R_preload_y	real variable	Element rotational preload y
AY_C1	real variable
AY_K1	real variable
AY_C2	real variable
AY_K2	real variable
AY_C3	real variable
AY_K3	real variable
AZ_type	string variable	AZ component element type
R_preload_z	real variable	Element rotational preload z
AZ_C1	real variable
AZ_K1	real variable
AZ_C2	real variable
AZ_K2	real variable
AZ_C3	real variable
AZ_K3	real variable
X_active	integer variable
Y_active	integer variable
Z_active	integer variable
AX_active	integer variable
AY_active	integer variable
AZ_active	integer variable
I_geo_marker	object variable
J_geo_marker	object variable
geo_radius	real variable
geo_length	real variable
Bushing_jfloat	object variable

Request Definition

disp_request

Component name:	Component units:	Definition:
DX	Length	Distance between i_marker and j_marker along j_marker X
DY	Length	Distance between i_marker and j_marker along j_marker Y
DZ	Length	Distance between i_marker and j_marker along j_marker Z
AX	Angle	Angle between i_marker and j_marker X
AY	Angle	Angle between i_marker and j_marker Y
AZ	Angle	Angle between i_marker and j_marker Z

velo_request

Component name:	Component units:	Definition:
VX	Velocity	Relative velocity between i_marker and j_marker along j_marker X
VY	Velocity	Relative velocity between i_marker and j_marker along j_markerY
VZ	Velocity	Relative velocity between i_marker and j_marker along j_marker Z
WX	Angular Velocity	Relative angular velocity between i_marker and j_marker X
WY	Angular Velocity	Relative angular velocity between i_marker and j_marker Y
WZ	Angular Velocity	Relative angular velocity between i_marker and j_marker Z

acc_request

Component name:	Component units:	Definition:
ACCX	Acceleration	Relative acceleration between i_marker and j_marker along j_marker X
ACCY	Acceleration	Relative acceleration between i_marker and j_marker along j_marker Y
ACCZ	Acceleration	Relative acceleration between i_marker and j_marker along j_marker Z
WDTX	Angular Acceleration	Relative angular acceleration between i_marker and j_marker X
WDTY	Angular Acceleration	Relative angular acceleration between i_marker and j_marker Y
WDTZ	Angular Acceleration	Relative angular acceleration between i_marker and j_marker Z

force_request

Component name:	Component units:	Definition:
FX	Force	Force between i_marker and j_marker along j_marker X
FY	Force	Force between i_marker and j_marker along j_marker Y
FZ	Force	Force between i_marker and j_marker along j_marker Z
TX	Torque	Torque between i_marker and j_marker X
TY	Torque	Torque between i_marker and j_marker Y
TZ	Torque	Torque between i_marker and j_marker Z