Model & approach
- Structure bolt forces, clamped-part compliance and external-load fractions analytically
- Complement the calculation with finite-element stresses and contact behaviour
Project study
Verification of a bolted joint under cyclic loading
An analytical and numerical assessment linked preload, contact state and changing external loads in a traceable verification of bolt and surrounding structure.
FEA structural analysisCyclically loaded bolted joint
Engineering question
The connection had to be assessed across assembly and recurring service loads while keeping load path, preload and local component demand distinct.
Boundary conditions
- Preloaded connection under cyclic external action
- Separate assessment of bolt, clamped parts and local attachment region
Results of the assessment
- The combined approach distinguished the bolt load fraction from local component demand.
- Critical states could be related to preload, contact and load amplitude.
Engineering consequence
The assessment supported definition of the joint, assembly state and constructive reserve.
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