Parameter
Description
SOLID
Minor word indicating that the objects to be analyzed are solid bodies.
NOTE: To obtain mass properties
of a sheet solid, use ANLSIS/VOLBND.
ACCRCY
Optional minor word indicating that the following parameter is a numerical value representing the accuracy used on the solid body to perform the calculation.
a
A numeric variable which represents the accuracy used to perform the calculations. The allowable range is between 0 and 1. The nearer the accuracy parameter is to 1, the more accurate is the analysis; however, the speed of the calculation is reduced. If this parameter is not specified, the system defaults to 0.9. Note that this is not a distance tolerance.
TOLER
An optional minor word which indicates that a tolerance value is to be used to limit the amount of error when calculating the mass property value.
t
An array of one or eleven numerical tolerances which represents the percentage of error you wish to allow when calculating the mass properties. Any array not containing one or eleven elements produces the following error message:
Invalid Tolerance Dimension
If a single value is specified, it is used for all calculations. If multiple values are specified, they are used to perform calculations as follows:
t(1) – Area
t(2) – Volume
t(3) – First Moment in the XC Direction
t(4) – First Moment in the YC Direction
t(5) – First Moment in the ZC Direction
t(6) – Moment of Inertia About XC Axis
t(7) – Moment of Inertia About YC Axis
t(8) – Moment of Inertia About ZC Axis
t(9) – YC-ZC Product of Inertia
t(10) – XC-ZC Product of Inertia
t(11) – XC-YC Product of Inertia
The tolerance values are the percent relative tolerance of error. For example, if you wanted your relative error to be no more than five percent, then you would enter a tolerance value of 5.0. See the following formula:
A tolerance value of 0.0 for any of the properties means that no tolerance is to be used in calculating that property. However, specifying a tighter tolerance for any of the mass properties should mean more accuracy for all of the mass properties, even if you do not specify a tolerance for each property.
Default tolerance values are 1.0 (1%) for area and volume, and 0.0 for the others.
objlist
A list of solid bodies to be analyzed.
LBIN
Minor word which sets the units for the results to pounds per cubic inch.
LBFT
Minor word which sets the units for the results to pounds per cubic foot.
GCM
Minor word which sets the units for the results to grams per cubic centimeter.
KGM
Minor word which sets the units for the results to kilograms per cubic meter.
variable list
A numeric array that is assigned values as shown in the following table.