Civil Engineering Reference
In-Depth Information
1.3 Basic flow and structural axis definitions
The instantaneous wind velocity vector is described in a Cartesian coordinate system
,,
⎣ ⎦
, where
x
is in the direction of the main flow and
z
is in the vertical
direction as shown in Fig. 1.3.a. Accordingly, the wind velocity vector is divided into
three components.
x
yz
⎡
⎤
f
f
f
a)
Definition of flow and structural axes, displacements and loads
b) Definition of cross sectional forces (stress resultants)
Fig. 1.3
Basic definitions of flow and structural axes
