numeric_results create spline
Allows you to create a result set from spline data points.
Format:
numeric_results create spline |
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spline_name = | an existing spline |
new_result_set_name = | new_result_set_name = |
z = | real |
units = | units_type_with_calc |
Example:
numeric_results create spline & |
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spline_name = | spline__1 & |
new_result_set_name = | rsc__1 & |
z = | 3.1 & |
units = | force |
Description:
Parameter | Value Type | Description |
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spline_name | An Existing Spline | Specifies an existing spline. |
new_result_set_name | A New Result Set | Allows you to identify the new result set name to be created with this operation. |
z | Real | |
units | Units_Type_With_Calc | Allows you to specify the type of units to be used for the new result set component. |
Extended Definition:
1. You may plot the result set to display the data points, or use it with the 'NUMERIC_RESULTS CREATE INTERPOLATION' command to construct an interpolated curve.
If the spline has one independent variable (x), Adams View will create a result set with two components named 'x' and 'y'. These components will contain the x and y values you entered when creating the spline.
If a spline has one independent variable (x), Adams View ignores parameter Z. If a spline has two independent variables (x and z), you may optionally specify the Z parameter.
If you do not specify Z, Adams View will create a result set with components named 'x', 'z', and 'y_1', 'y_2', ... 'y_n', where 'n' is the number of z values. These components will include the x, y, and z values you entered when creating the spline. There will be a y component for each z value, and the lengths of the x and y components will be the same.
If you do enter a Z value, Adams View will create a result set with two components named 'x' and 'y'. Component 'x' will contain the x values you entered when creating the spline. Adams View will create component 'y' by finding the two z values nearest to the value you specify, and linearly interpolating between the corresponding sets of y values.
2. You identify a spline by typing its name. If you created the spline by reading an Adams data set, the spline name is the letters SPL followed by the Adams data set spline ID number. For example, the name of Adams SPLINE/101 is SPL101. If you created the spline during preprocessing, you will have given it a name at that time.
If a spline is available by default, you may identify it by entering only its name. If it is not, you must enter its full name. To identify a spline under another model, for instance, you may need to enter the model name as well. For example, you may specify spline 'stiffness' from model 'suspension' by entering ".suspension.stiffness". If you type a "?", Adams View will list the splines available by default.
You must separate multiple spline names by commas.
3. A result set is a storage place for any kind of numeric tabular data. A result set can contain "n" components. Result sets are associated with an Adams analysis run and can be identified as such. A result set associated with request 101 from and analysis named "test" is referred to as .test.req101.
This is a required parameter and the result set name given must be unique within the particular analysis name. A result set name may be arbitrarily long, and a combination of letters of the alphabet and numbers may be used. The leading character must be a letter.
Result Sets are associated with an analysis run and can be identified as such. A result set associated with request 101 from an analysis named "test" is referred to as .test.req101.
Several predefined result set types are created when Adams request and result files are read into Adams View. For example, assume you have read a request file called "SHIFT.REQ", and this request file contains the result information for the Adams statement REQUEST/1. The result set will be named REQ1, and may also be referred to relative to the analysis name .shift.req1. If you wish to refer to a component in the same result set, the full name for the X component would be .SHIFT.REQ1.X.
The following table illustrates the default names assigned to result sets and result set components, read from request (.REQ) and results (.RES) files.
Result set type | Result set name | Component names | File that result is from |
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part | PARxxx... | x y z e1 e2 e3 e4 mag vx vy vz wx wy wz accx accy accz wdx wdy wdz | results file |
diff | DIFxxx... | q dq | results file |
joint | JOIxxx... | fx fy fz tx ty tz fmag tmag | results file |
jprim | JPRxxx... | fx fy fz tx ty tz fmag tmag | results file |
motion | MOTxxx... | fx fy fz tx ty tz fmag tmag | results file |
gear | GEAxxx... | fx fy fz | results file |
coupler | COUxxx... | fx1 fy1 fz1 tx1 ty1 tz1 fmag1 tmag1 fx2 fy2 fz2 tx2 ty2 tz2 fmag2 tmag2 fx3 fy3 fz3 tx3 ty3 tz3 fmag3 tmag3 | results file |
sforce | SFOxxx... | fx fy fz tx ty tz fmag tmag | results file |
spring damp | SPRxxx... | fx fy fz tx ty tz fmag tmag | results file |
bushing | BUSxxx... | fx fy fz tx ty tz fmag tmag | results file |
beam | BEAxxx... | fx fy fz tx ty tz fmag tmag | results file |
field | FIExxx... | fx fy fz tx ty tz fmag tmag | results file |
user request | UREQxxx... | u1 u2 u3 u4 u5 u6 u7 u8 | results file |
request | REQxxx... | x y z r1 r2 r3 mag amag | request file |
ucon | (not implemented) | | |
4. Once the unit type is set, Adams View can perform the proper unit conversion on the data. If the value for the “units” parameter is calculate, Adams View tries to determine the units to use for this operation. For example, if velocities are added (length/time), then the calculated “units” parameter for the new result set component is velocity (length/time). If the derivative of a velocity is taken, the calculated “units” parameter is acceleration (length/time**2).
Adams View can only handle calculated units with a maximum exponent for the base units (force, length, mass, time) of plus or minus four. For example, if a result set component with the units (length/time**3) is multiplied with a result set component having the same units, it gives the calculated units (length**2/time**6). Because the exponent of time is greater than four, Adams View uses no_units and issues a warning.