Equipment for Rational Securing of Cargo on Railway ... - Vinnova

MariTerm AB 2004-01-30 jvgRASLA
The tensile <strong>for</strong>ce in each direction per lashing is:
F
v
= F ⋅ sinα
Ft
= F ⋅ cosα
⋅ sin β
F = F ⋅ cosα
⋅ cos β
l
Below the <strong>for</strong>ces in the lashings during transverse acceleration are shown.
The figure below shows the <strong>for</strong>ces acting on the cargo during transverse acceleration.
a t
2F t
2F v
Force
Acceleration
a v
mg
F f
R
Equilibrium <strong>of</strong> <strong>for</strong>ces:
↑
→
R − m ⋅ g − 2 ⋅ F
F
f
+ 2 ⋅ F = m ⋅ a
t
v
= m ⋅ a
t
⇒
v
a
⇒
t
=
R = m ⋅
F
f
+ 2 ⋅ F
m
( a + g)
t
v
+ 2 ⋅ F
v
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