Insert of sandwich panels sizing through a failure mode map

Inserts of sandwich panel joints are commonly sized using analytical approaches that provide a rough estimation of the pull-out strength. In this investigation, the use of failure mode maps is proposed as an alternative to the conventional methods. These failure charts are created by means of several advanced nonlinear numerical simulations that can provide accurate pull-out strength estimations. This technique may require a considerable investment of time and effort but, in exchange, it could reduce the time and cost of insert design in the long term.