Supported MSC.ADAMS Functions

COSMOSMotion supports many MSC.ADAMS functions and expression functions. You can enter these functions in the expression text boxes of the motion or force property panels. You can use these expression functions to define a wide variety of non-standard phenomena in your model.

FORTRAN 77 Functions

Function name:	Summary definition:
ABS	Absolute value of (a)
ACOS	Arc cosine of (a)
AINT	Nearest integer whose magnitude is not larger than (a)
ANINT	Nearest whole number to (a)
ASIN	Arc sine of (a)
ATAN	Arc tangent of (a)
ATAN2	Arc tangent of (a1, a2)
COS	Cosine of (a)
COSH	Hyperbolic cosine of (a)
DIM	Positive difference of a1 and a2
EXP	e raised to the power of (a)
LOG	Natural logarithm of (a)
LOG10	Log to base 10 of (a)
MAX	Maximum of a1 and a2
MIN	Minimum of a1 and a2
MOD	Remainder when a1 is divided by a2
SIGN	Transfer sign of a2 to magnitude of a1
SIN	Sine of (a)
SINH	Hyperbolic sine of (a)
SQRT	Square root of a1
TAN	Tangent of (a)
TANH	Hyperbolic tangent of (a)

Simulation Constants and Variables

General Functions

Function name:	Summary definition:
AKISPL	Returns the iord derivative of the interpolated value of SPLINE/id at X=x and Z=z
BISTOP	Models a gap element
CHEBY	Evaluates a Chebyshev polynomial
CUBSPL	Returns the interpolated value of SPLINE/id at X=x and Z=z or returns the iord derivative at the interpolated value of SPLINE/id at X=x, Z=0
FORCOS	Evaluates a Fourier Cosine series
FORSIN	Evaluates a Fourier Sine series
IMPACT	Models collisions
MOTION	Returns component comp of a force due to MOTION/id as calculated in the coordinate system of marker rm
POLY	Evaluates a standard polynomial at a user specified value x
SHF	Evaluates a simple harmonic function
STEP	Approximates the Heaviside step function with a cubic polynomial
STEP5	Approximates the Heaviside step function with a quintic polynomial

Result-Dependent Functions

Function name:	Summary definition:
Displacement
AX	Rotational displacement about x-axis
AY	Rotational displacement about y-axis
AZ	Rotational displacement about z-axis
DM	Magnitude of linear displacement
DX	Translational displacement in x-axis
DY	Translational displacement in y-axis
DZ	Translational displacement in z-axis
PHI	Third Euler rotation angle
PITCH	Second angle of yaw-pitch-roll rotation
PSI	First Euler rotation angle
ROLL	Third angle of yaw-pitch-roll rotation
THETA	Second Euler rotation angle
YAW	First angle of yaw-pitch-roll rotation
Velocity
VM	Magnitude of translational velocity
VR	Relative velocity
VX	Translational velocity in x-axis
VY	Translational velocity in y-axis
VZ	Translational velocity in z-axis
WM	Magnitude of angular velocity
WX	Angular velocity about x-axis
WY	Angular velocity about y-axis
WZ	Angular velocity about z-axis
Acceleration
ACCM	Magnitude of translational acceleration
ACCX	Translational acceleration in x-axis direction
ACCY	Translational acceleration in y-axis direction
ACCZ	Translational acceleration in z-axis direction
WDTM	Magnitude of angular acceleration
WDTX	Angular acceleration about the x-axis
WDTY	Angular acceleration about the y-axis
WDTZ	Angular acceleration about the z-axis
Force
FM	Magnitude of linear force
FX	Linear force in x-axis direction
FY	Linear force in y-axis direction
FZ	Linear force in z-axis direction
TM	Magnitude of Torque
TX	Torque about x-axis
TY	Torque about y-axis
TZ	Torque about z-axis

Function name:	Summary definition:
DTOR	Degrees to radians conversion factor
PI	Ratio of circumference to diameter of a circle
RTOD	Radians to degrees conversion factor
TIME	Current simulation time
IF	Defines a function expression