Test

The Test component is required to define the options in the Test Properties section.



Figure 1. Test Component in Leaf Builder

Inputs

Test Type
Defines the type of test to execute the test process. There are two types: “Spring and Shackle” and “Spring only (SAE j510)”.
Testing Directory
Defines the folder location, where all the test files will be generated such as .mdl, .xml, .plt, and so on.
File Label
The field used to enter the required test file label.

Spring and Shackle - Force/Motion Inputs

Actuator
Depending on the type of Test Rig selected for the deflection option, it can be a force or applied motion.
Offset force/displacement
This field is used to set the initial force/displacement value before load cycle is started. Offset is relative to initial load/position of model.
Jounce force/displacement
Enter the increment of force or displacement relative to the initial force of displacement for jounce. The sum of the offset force and jounce force give the maximum force applied to the spring, if the actuator is force. Likewise, the sum of the offset displacement and jounce displacement give the maximum displacement applied to the spring, if the actuator is motion.
Rebound force/displacement
Enter the decrement (positive value) of force or displacement relative to the offset force or displacement for rebound. For a force actuator, the difference between the offset force and rebound force gives the minimum force applied to the spring. For example, if the initial force is 1000 N and the rebound force is 1000 N, then the minimum force in the test is zero (free position). For a motion actuator, the difference between the offset displacement and rebound displacements gives the minimum spring displacement.

Spring-only (SAE J510) - Motion Inputs

Curb
Displacement to push the system to the curb position.
Design
Displacement to push the system to the design position.
Metal-Metal
Displacement to push the system to the maximum deflection position.

Simulation Settings

Print Interval
This field is used to set a print interval for the output .plt file.
Step Size
This field is used to set the step size for the solver.
Simulation Type
Defines the Simulation type: Quasi-static or Transient.
End Time
Define the cycle time for force deflection.
Build Leaf
The tag that defines if the MDL is to be built when the Run Test Rig button is clicked.
Run Test Rig
Click the Run button to run the test event on the leaf spring.

Test Block for Leaf Property File (*lpf)

$----------------------------TEST_RIG
[TEST_RIG]
(TEST_1)
BUILDLEAF = 'FALSE'
CURB = 0.0
DESIGN = 0.0
DIRECTORY = 'C:\USERS\DESKTOP'
ENDTIME = 10.0
FORCEJOUNCE = 0.0
FORCEOFFSET = 0.0
FORCEREBOUND = 0.0
METALTOMETAL = 0.0
MOTIONJOUNCE = 0.0
MOTIONOFFSET = 0.0
MOTIONREBOUND = 0.0
OPTION = 'MOTION'
OUTPUTFILELABEL = 'TEST_'
PRINTINTERVAL = 0.01
RUNNO = 1.0
SIMULATIONTYPE = 'QUASI-STATIC'
STEPSIZE = 0.001
TESTTYPE = 'SPRING AND SHACKLE'
Block Name = 'Test_Rig' (Required)
Sub-block name = 'TEST_1' (Required)
Attributes Type Valid Value Required
BUILDLEAF - ‘TRUE’,

'FALSE'

 
CURB Real    
FORCEJOUNCE Real    
FORCEOFFSET Real    
FORCEREBOUND Real    
METALTOMETAL Real    
MOTIONJOUNCE Real    
MOTIONOFFSET Real    
MOTIONREBOUND Real    
ENDTIME Real    
PRINTINTERVAL Real    
STEPSIZE Real    
DIRECTORY String    
OPTION   'MOTION',

'FORCE'

 
OUPUTFILELABEL String    
RUNNO Integer    
SIMULATIONTYPE   'QUASI-STATIC',

'TRANSIENT'

 
TESTTYPE   'SPRING AND SHACKLE',

'SPRING ONLY (SAE j510)'