/PROP/TYPE23 (SPR_MAT)

Block Format Keyword This generic spring property can only be used with spring materials /MAT/LAW108 (SPR_GEN) or /MAT/LAW113 (SPR_BEAM) and assigned to a part (/PART).

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/PROP/TYPE23/prop_ID/unit_ID or /PROP/SPR_MAT/prop_ID/unit_ID
prop_title
If Imass=1, insert the next line
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
Imass   Area Inertia Skew_ID sens_ID Isflag  
If Imass=2, insert the next line
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
Imass   Volume Inertia Skew_ID sens_ID Isflag  

Definitions

Field Contents SI Unit Example
prop_ID Property identifier.

(Integer, maximum 10 digits)
unit_ID Optional unit identifier.

(Integer, maximum 10 digits)
prop_title Property title.

(Character, maximum 100 characters)
Imass Input type for the spring mass calculation.
=0
Set to 2.
=1
The mass is calculated using the Area length of the spring element, and density.
=2 (Default)
The mass is calculated using the Volume and density.
Area Cross-section area of the spring element.

(Real)

 [ m 2 ]
Volume Volume of the spring element.

(Real)

[ m 3 ]

Inertia Spring mass moment of inertia.

(Real)

 [ m 2 kg ] MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbbG8FasPYRqj0=yi0dXdbba9pGe9xq=JbbG8A8frFve9 Fve9Ff0dmeaabaqaciGacaGaaeqabaWaaeaaeaaakeaaqaaaaaaaaa Wdbmaadmaapaqaa8qacaqGTbWaaWbaaSqabeaacaqGYaaaaOGaae4A aiaabEgaaiaawUfacaGLDbaaaaa@3C44@
Skew_ID Skew system identifier.

(Integer)
sens_ID Sensor identifier.

(Integer)
Isflag Sensor flag. 3
=0
Spring element activated when sens_ID activates and cannot be deactivated.
=1
Spring element deactivated when sens_ID activates and cannot be activated.
=2
Spring elements are activated, or deactivated state matches the sensor state and can switch back and forth. The spring initial length ( l 0 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamiBamaaBa aaleaacaaIWaaabeaaaaa@37CD@ ) is based the spring length at the activation time.

(Integer)

Example

#RADIOSS STARTER
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
#-  1. LOCAL_UNIT_SYSTEM:
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/UNIT/2
units for material and property
                  Mg                  mm                   s
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/PROP/SPR_MAT/26/2
SPOTWELD_NO_RUPTURE
#    Imass                        Volume             Inertia   skew_ID   sens_ID    Isflag     
         2                             1             6.55E-6         0         0         0     
/MAT/LAW113/26/2
SPOTWELD_NO_RUPTURE
                2E-6
#    Ifail     Ileng    Ifail2
                                   
#                 K1                  C1                  A1                  B1                  D1
              100000                   0                   0                   0                   0
# fct_ID11        H1  fct_ID21  fct_ID31  fct_ID41                    delta_min1          delta_max1
         1         1         0         0         0                             0               .5E-1
#                 F1                  E1             Ascale1             Hscale1
                   0                   0                   0                   0
#                 K2                  C2                  A2                  B2                  D2
              500000                   0                   0                   0                   0
# fct_ID12        H2  fct_ID22  fct_ID32  fct_ID42                    delta_min2          delta_max2
         2         1         0         0         0                        -.5E-1               .5E-1
#                 F2                  E2             Ascale2             Hscale2
                   0                   0                   0                   0
#                 K3                  C3                  A3                  B3                  D3
              500000                   0                   0                   0                   0
# fct_ID13        H3  fct_ID23  fct_ID33  fct_ID43                    delta_min3          delta_max3
         2         1         0         0         0                        -.5E-2               .5E-2
#                 F3                  E3             Ascale3             Hscale3
                   0                   0                   0                   0
#                 K4                  C4                  A4                  B4                  D4
             5000000                   0                   0                   0                   0
# fct_ID14        H4  fct_ID24  fct_ID34  fct_ID44                    delta_min4          delta_max4
         0         1         0         0         0                         -.015                .015
#                 F4                  E4             Ascale4             Hscale4
                   0                   0                   0                   0
#                 K5                  C5                  A5                  B5                  D5
             5000000                   0                   0                   0                   0
# fct_ID15        H5  fct_ID25  fct_ID35  fct_ID45                    delta_min5          delta_max5
         0         1         0         0         0                         -.015                .015
#                 F5                  E5             Ascale5             Hscale5
                   0                   0                   0                   0
#                 K6                  C6                  A6                  B6                  D6
             5000000                   0                   0                   0                   0
# fct_ID16        H6  fct_ID26  fct_ID36  fct_ID46                    delta_min6          delta_max6
         0         1         0         0         0                         -.015                .015
#                 F6                  E6             Ascale6             Hscale6
                   0                   0                   0                   0
#                 V0              Omega0               F_cut   Fsmooth
                   0                   0                   0         0
#                  C                   n               alpha                beta
                   0                   0                   0                   0
                   0                   0                   0                   0
                   0                   0                   0                   0
                   0                   0                   0                   0
                   0                   0                   0                   0
                   0                   0                   0                   0
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
#-  7. FUNCTIONS:
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/FUNCT/1
spotweld tensile function                                                                           
#                  X                   Y
              -250.0             -8250.0
               -0.25             -8250.0
                 0.0                 0.0
                0.25              8250.0
               250.0              8250.0
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/FUNCT/2
Spotweld shear function                                                                             
#                  X                   Y
              -250.0            -25000.0
               -0.25            -25000.0
                 0.0                 0.0
                0.25             25000.0
               250.0             25000.0
#enddata

Comments

  1. This property can only be used with /MAT/LAW108 (SPR_GEN) and /MAT/LAW113 (SPR_BEAM). When used with these spring materials, the spring behavior is the same as /PROP/TYPE8 (SPR_GENE) or /PROP/TYPE13 (SPR_BEAM), respectively.
  2. Spring coordinate system:
    • When this property is used with /MAT/LAW108 (SPR_GEN):

      The spring local system is defined by a skew coordinate system. The local system can be defined for each element using /SPRING Skew_ID. If Skew_ID is not defined for each element, the local system defined in the /PROP/TYPE23 (SPR_MAT) Skew_ID is used. If a system is not defined in the element or property, then the global system is used.

    • When used with /MAT/LAW113 (SPR_BEAM):

      The spring's X MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbbG8FasPYRqj0=yi0dXdbba9pGe9xq=JbbG8A8frFve9 Fve9Ff0dmeaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWHybaaaa@373F@ direction is defined using nodes N1 and N2 of the spring.

      If the node of the spring N3 is defined, the spring's Y ′ MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbbG8FasPYRqj0=yi0dXdbba9pGe9xq=JbbG8A8frFve9 Fve9Ff0dmeaabaqaciGacaGaaeqabaWaaeaaeaaakeaaceWHzbGbau aaaaa@374C@ direction is defined using nodes N1 and N3 of the spring. N3, N2, and N1 should not be in a line.

      prop_spr_beam14
      Figure 1.
      • The Z MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbbG8FasPYRqj0=yi0dXdbba9pGe9xq=JbbG8A8frFve9 Fve9Ff0dmeaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWHAbaaaa@3741@ direction is:(1)
        Z = X Λ Y ′
      • If node N3 is not defined in the element input, and skew system is defined in the property input, the Z MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbbG8FasPYRqj0=yi0dXdbba9pGe9xq=JbbG8A8frFve9 Fve9Ff0dmeaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWHAbaaaa@3741@ direction is:(2)
        Z = X Λ Y skew
      • If neither node N3 nor skew system are defined in input, the Z MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbbG8FasPYRqj0=yi0dXdbba9pGe9xq=JbbG8A8frFve9 Fve9Ff0dmeaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWHAbaaaa@3741@ direction is:(3)
        Z = X Λ Y global
        Except when the spring local X MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbbG8FasPYRqj0=yi0dXdbba9pGe9xq=JbbG8A8frFve9 Fve9Ff0dmeaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWHAbaaaa@3741@ direction and Y g l o b a l MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbbG8FasPYRqj0=yi0dXdbba9pGe9xq=JbbG8A8frFve9 Fve9Ff0dmeaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWHybWaaS baaSqaaiaadEgacaWGSbGaam4BaiaadkgacaWGHbGaamiBaaqabaaa aa@3CFB@ are colinear then:(4)
        Z = X Λ X global
      Finally, Y MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbbG8FasPYRqj0=yi0dXdbba9pGe9xq=JbbG8A8frFve9 Fve9Ff0dmeaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWHzbaaaa@3740@ direction is found as:(5)
      Y = Z Λ X
  3. Spring activated and/or deactivated by sensor defined in sens_ID and depends on Isflag:
    • If Isflag = 0, the spring element is activated by the sens_ID and cannot be deactivated. The initial length of the spring is based on the spring length at time=0.
    • If Isflag = 1, the spring element is deactivated by the sens_ID and cannot be activated. The initial length of the spring is based on the spring length at time=0.
    • If Isflag = 2, the spring is activated and/or deactivated by sens_ID and can switch activation state multiple times. If sensor is activated, the spring is active; if sensor is deactivated, spring is inactive. The spring initial length, l 0 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8srps0lbbf9q8WrFfeuY=Hhbbf9v8 qqaqFr0xc9pk0xbba9q8WqFfea0=yr0RYxir=Jbba9q8aq0=yq=He9 q8qqQ8frFve9Fve9Ff0dmeaacaGacmGadaWaaiqacaabaiaafaaake aacaWGSbWaaSbaaSqaaiaaicdaaeqaaaaa@3AAE@ , is the distance between spring nodes at the time of sensor activation.
  4. Spring elements with sensor activation or deactivation are mainly used in the pretension models.