Document ID: chunk:federal_register_of_legislation:F2005L03992:body:0:p18
Version: federal_register_of_legislation:F2005L03992
Segment Type: other
Provision Reference: 
Character Range: 46281–48986

thorax and the velocity of compression derived by differentiation of the compression, filtered at channel frequency class 180 Hz.  For the purposes of this calculation the standard width of the half thorax rib cage is 140 mm.
     where D (metres) = rib deflection
     The calculation algorithm to be used is set out in annex 4, appendix 2.

    3. ABDOMEN PROTECTION CRITERION
     The peak abdominal force is the maximum value of the sum of the three forces measured by transducers mounted 39 mm below the surface on the crash side, CFC 600 Hz.

    4. PELVIS PERFORMANCE CRITERION
     The pubic symphisis peak force (PSPF) is the maximum force measured by a load cell at the pubic symphysis of the pelvis, filtered at channel frequency class 600 Hz.
    Annex 4 - Appendix 2

    THE PROCEDURE FOR CALCULATING THE VISCOUS CRITERION FOR EUROSID 1

     The Viscous Criterion, VC, is calculated as the instantaneous product of the compression and the rate of deflection of the rib.  Both are derived from the measurement of rib deflection.  The rib deflection response is filtered once at Channel Frequency Class 180.  The compression at time (t) is calculated as the deflection from this filtered signal expressed as the proportion of the half width of the EUROSID l chest, measured at the metal ribs (0.14 metres):
     The rib deflection velocity at time (t) is calculated from the filtered deflection as:
     where D(t) is the deflection at time (t) in metres and at is the time interval in seconds between the measurements of deflection. The maximum value of  t shall be 1.25 x 10-4 seconds.

     This calculation procedure is shown diagrammatically below:

    Annex 5

    MOBILE DEFORMABLE BARRIER CHARACTERISTICS

    1. CHARACTERISTICS OF THE BARRIER
    1.1. The total mass shall be 950 ± 20 kg.
    1.2. The front and rear track width of the trolley shall be 1,500 ± 10 mm.
    1.3. The wheel base of the trolley shall be 3,000 ± 10 mm.
    1.4. The centre of gravity shall be situated in the longitudinal median vertical plane within 10 mm, 1,000 ± 30 mm behind the front axle and 500 ± 30 mm above the ground.
    1.5. The distance between the front face of the impactor and the centre of gravity of the barrier shall be 2,000 ± 30 mm.

    2. CHARACTERISTICS OF THE IMPACTOR
    2.1. Geometrical characteristics
    2.1.1. The impactor consists of six independent joined blocks whose forms, sizes and positioning are shown in figure 1.
    2.1.2. The deformable impact zone shall be 1,500 ± 10 mm wide and 500 ± 5 mm high.
    2.1.3. The ground clearance of the collision zone shall be 300mm ± 5 mm measured in static condition before impact.
    2.1.4. There shall be six deformable