Basic load cases

Figure 5.12 Basic load cases in bolted composite laminates.

Figure 5.13 Stress distribution around bolt holes for basic load case 1. Stress normalised by nominal bearing stress S b = F/dt. ...

Stiffness constant of the fastener installation Normalised radial stress k for basic load case i Normalised tangential stress k( for basic load case i Normalised shear stress ks for basic load case i Radial distance from e.g. to fastener i... 

Figure 5.25 Basic load cases 1 and 3 making up the load case for parts la and lb.

Table 5.2 Normalised radial stress r and tangential stress along the hole boundary at 0°, 45° and 90° for basic load case 1...

Table 5.5 Normalised shear stress k =-r xy/o n along the shear-out plane at different distances x/d from the hole boundary for basic load case 3.

Parts la and lb are made up of basic load cases 1 and 3. The tangential stress distribution around the bolt holes of basic load case 1 is given by Equation (5.44). The tangential stress distribution around the bolt hole of basic load case 3 is ... 

The shear stress distribution from basic load cases 1 and 3 is given by Equations (5.49) and (5.58), respectively ... 

When the electrodes on the associated surfaces are connected, only the particular electric flux density component shows a constant non-zero distribution with opposed orientation. Charges cannot accumulate on the electrodes as they flow off instantaneously. For a dynamic process, this flow of charges may be determined by a current measurement, and is proportional to the strain rate, respectively stress rate. From the energetic point of view, the charge compensation must also have consequences for the mechanical fields. This becomes apparent by reorganization of the constitutive relation for these conditions and is reflected in the dissimilar stiffness and compliance matrices of Eqs. (4.10a) and (4.10b). These influences may be summarized for the basic load cases with resulting electrostatic fields in g-direction ... 

In [4] and [5], a distinction is drawn between two, respectively three different dimensioning methods. Simple parts and stressing states can be calculated on the basis of conventional analytical dimensioning. Concerning this method, the load acting on the part is divided into simple basic load cases, which can be described in analytical terms on the basis of the superposition principle. Precisely in the case of more complex geometries, however, highly... 

---