Variation Simulation of Dissimilar Materials Using Clip Fasteners
Paper i proceeding, 2016
The use, and the joining process, of dissimilar
materials have recently been highlighted. Joining of
dissimilar materials can however be problematic, due to
different material properties. Different materials respond differently to temperature changes and this might lead to deformations and stress in the final assembly. The joining methods differ also often from the one used to join similar material. Variation simulation is used to predict the geometrical variation of a subassembly or a final product. In variation simulation of dissimilar materials it is important to include material properties in order to achieve an accurate result.
Also the effects form joining method must be included in the
simulation. To join dissimilar materials like plastic and sheet
metal parts, clip fasteners are often used.
This paper presents a method for variation simulation
of dissimilar materials with a focus on how to model clip
fasteners. The method allows effects of temperature changes
on holding forces and geometrical variation in the final
assembly to be evaluated. Holding force refers to the force a
clip fastener must withstand after the parts are joined. The
method proposed can be used to support the design and
selection of clip fasteners.