SHRP-A-379 traducir

system is operating properly.
in stiffness, stop the test.
When the specimen has experienced greater than 50% reduction
5. CALCULATIONS
5.1 The foUowing calculations shall be performed at the operator-specified load cycle
intervals:
5.1.1 Maximum Tensiie Stress (kN)
300aP (1)
°t- wh 2
where
a = L/3
L -- the beam span, typically 356 mm
P -- the load in kilonewtons
w -- the beam width in millimeters
h = the beam height in millimeters
5.1.2 Maximum Tensile Strain (ram ram)
_t = (126h)/( 3L2 - 4a2) (2)
where
6 = maximum deflection at center of beam, in mm
L = length of beam between outside clamps, 356 mm
5.1.3 Flexural Stiffness (kPa)
s = (3)
5.1.4 Phase Angle (deg)
6 = 360fs (4)
where
f = load frequency, in Hz
s = time lag between P_ and 8m_, in seconds
5.1.5 Dissipated Energy (kPa) per cycle
D = _wtetsin(q_) (5)
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