Evaluation of geometric tolerances using strain energy density

Traditionally, the geometric quality of assembled products has been evaluated by deviation from nominal val-ues. However, the increased use mixed materials in especially automotive industry, in combination with an increased use of non-rigid simulation, open up for other evaluation criteria to complement the traditionally used deviation. The stiffness of a part or subassembly will, in combination with its deviation from nominal, give rise to different amounts of energy needed to join it to other parts. In this paper, the energy needed for joining is suggested as an evaluation criterion, complementary to geometric deviation, to judge the severity of the deviation.& COPY; 2023 The Author(s). Published by Elsevier Ltd on behalf of CIRP. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)

Automated summary

Traditionally, the quality of assembled products has been evaluated based on their deviation from nominal values. However, with the increased use of mixed materials and non-rigid simulation, new evaluation criteria, such as the energy needed for joining, can complement the traditional deviation-based evaluation. This paper suggests using the energy needed for joining as a criterion to assess the severity of deviation from nominal values.