Iveco Stralis MY 2016, Body Builder Instructions

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NEW STRALIS MY2016
‒
GUIDELINES FOR BODYBUILDERS
APPLICATIONS OF SUPERSTRUCTURES
3.2 ELEMENTS MAKING UP THE SUBFRAME
7
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Printed 692.68.697
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5 Ed. - Base 03/2019
Similarly, when the connection between the chassis and subframe is such as to ensure the transmission of the shear stresses (con-
nection with plates), in checking the stresses at the two ends of the individual section, it is necessary to define the new neutral axis
for this, on the basis of the different elastic modulus of two materials.
The collaboration requirement for aluminium means, in short, large and not very convenient dimensions.
3.2 ELEMENTS MAKING UP THE SUBFRAME
Longitudinal profiles
The side members of the added structure must be continuous, extended as much as possible toward the front of the vehicle and
towards the rear area of the front spring support; in addition, they must rest on the chassis and not on the brackets.
In order to achieve a gradual reduction of the resistant section, the front ends of the profile must be tapered in height with an
angle not exceeding 30
°
, or another form of equivalent tapering (see Figure 1); the front end in contact with the chassis must be
properly coupled, with min. radius of 5 mm.
91136
Figure 1
In cases in which the components of the cab rear suspension do not allow the passage of the profile in the entire section, this can
be realised as in Figure 2. If, due to construction, there are high bending moments on the front of the chassis (e.g. in the case of
a crane with the working range on the front of the vehicle), the profile of the subframe must be dimensioned to cope with such
forces.
91137
Figure 2
The possibility of building a counter chassis with a different width from that of the vehicle chassis is permitted only in special cases
(e.g. interchangeable equipment with sliding systems on rollers, where the mechanical or hydraulic devices are unified). In these