26.6. Special Parametric Value (SPV)

R2R2D provides SPV for the user easily to access to important design parameters and modification. The list below introduces functionalities of SPV.

• SPV always exists and used internally.

• The existing common SPV is put in an input field of dialog box initially.

• If the user doesn’t check the SPV name button and enter a numeric value in the input field of dialog, the system refers the numeric value.

• The user can create a new standard PV for the input field and its current value is the entered numeric value.

• If the user checks the SPV name button and enters a numeric value in the input field of dialog, the entered numeric value becomes the current value of SPV.

• The SPV names and their default values are defined as the following table.

Table 26.1 Special Parametric Value List

Entity	Contents		Name	Default (Unit)
Beam Assembly	Thickness		B_T	4.0
	Depth		B_D	100.0
Roller	To Workpiece Contact	Stiffness Coefficient	RTW_K	1000.0
		Damping Coefficient	RTW_C	1.0
		Dynamic Friction Coefficient	RTW_MU	0.0
		Stiffness Exponent	RTW_K_EXP	1.3
		Damping Exponent	RTW_C_EXP	1.0
		Indentation Exponent	RTW_I_EXP	2.0
		Static Threshold Velocity	RTW_T_VEL_S	100.0
		Dynamic Threshold Velocity	RTW_T_VEL_D	150.0
		Static Friction Coefficient	RTW_MU_S	0.3
		Maximum Friction Force	RTW_M_F	0.0
		Rebound Damping Factor	RTW_RDF	1.e-003
Guide	Arc Guide Imaginary Radius		AG_IM_R	1
Guide	Linear Guide Imaginary Radius		LG_IM_R	1
Guide	To Workpiece Contact	Stiffness Coefficient	GTW_K	1000.0
		Damping Coefficient	GTW_C	1.0
		Dynamic Friction Coefficient	GTW_MU	0.0
		Stiffness Exponent	GTW_K_EXP	1.3
		Damping Exponent	GTW_C_EXP	1.0
		Indentation Exponent	GTW_I_EXP	2.0
		Maximum Penetration	GTW_M_PEN	10.0
		Static Threshold Velocity	GTW_T_VEL_S	100.0
		Dynamic Threshold Velocity	GTW_T_VEL_D	150.0
		Static Friction Coefficient	GTW_MU_S	0.3
		Maximum Friction Force	GTW_M_F	0.0
		Rebound Damping Factor	GTW_RDF	1.e-003
Workpiece	To Workpiece	Stiffness Coefficient	WTW_K	1000.0
		Damping Coefficient	WTW_C	1.0
		Dynamic Friction Coefficient	WTW_MU	0.0
		Stiffness Exponent	WTW_K_EXP	1.3
		Damping Exponent	WTW_C_EXP	1.0
		Indentation Exponent	WTW_I_EXP	2.0
		Static Threshold Velocity	WTW_T_VEL_S	100.0
		Dynamic Threshold Velocity	WTW_T_VEL_D	150.0
		Static Friction Coefficient	WTW_MU_S	0.3
		Maximum Friction Force	WTW_M_F	0.0
		Rebound Damping Factor	WTW_RDF	1.e-003
Workpiece	To Workpiece Contact	Stiffness Coefficient	WTWC_K	1000.0
		Damping Coefficient	WTWC_C	1.0
		Dynamic Friction Coefficient	WTWC_MU	0.0
		Stiffness Exponent	WTWC_K_EXP	1.3
		Damping Exponent	WTWC_C_EXP	1.0
		Indentation Exponent	WTWC_I_EXP	2.0
		Static Threshold Velocity	WTWC_T_VEL_S	100.0
		Dynamic Threshold Velocity	WTWC_T_VEL_D	150.0
		Static Friction Coefficient	WTWC_MU_S	0.3
		Maximum Friction Force	WTWC_M_F	0.0
		Rebound Damping Factor	WTW_RDF	1.e-003

26.6.1. Special Parametric Value Editor

Figure 26.39 Special Parametric Value List dialog box

Step to edit or export or import the Special Parametric Value

1. Click the R2R2D icon in the Toolkit tab.

2. Click the SPV icon of the Parameter group in the R2R2D tab.

3. If the user edits the values, the system refers the modified values.

4. If the user exports the names and values of the special parametric values, the *.rpv file is created. The file can be used in the design parametric study with RecurDyn Batch Simulation.

If the user imports the pre-defined *.rpv file, the system refers the imported values. In this case, the names of Special Parametric Value should be same.