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CAE Fidesys 9.0 Documentation |
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CAE Fidesys 9.0 Documentation |
Bolt pretension - a specific type of load that occurs when bolts and studs are tightened - tensile stresses occur in the body of the bolt / stud. Pretension can be modeled using CAE in two ways:
direct modeling of a threaded connection, taking into account the contact in the threads and threads and the rotation of the nut/bolt, which is an unreasonably resource-intensive procedure.
engineering approach - when tensile stresses are created by cutting the bolt in half and applying forces to the cut surface, thereby creating interpenetration of the bolt halves into themselves. To implement this type of loading, CAEFidesys uses such a type of contact as "tangentially connected", which allows the contact surfaces to interpenetrate each other, but does not allow their relative transverse displacement (due to which the integrity of the bolt body is violated). supported) and also allows you to set the preload in Newtons via the pin settings.
The result, after turning off the flange display through the "Threshold" filter, will look like this:
