Integration of high-speed imaging, pressure-sensitive film, and finite element method for predicting drop damage in postharvest collision of ‘Dangshansuli’ pears (Pyrus bretschneideri Rehd.) with different contact materials

2026-08-08

PRE

Chenxu Zhao

Yuchi Li

Yurong Guo

Wei Hui

Yonghong Meng

Junpeng Niu *

Shujie Song *

DOI：10.1016/j.foodres.2026.120281

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• A critical impact energy of 0.528 J triggers bruising in ‘Dangshansuli’ pears. • COR safety thresholds provide a primary basis for real-time damage monitoring. • Bruising stress thresholds shift from 0.2 to 0.3 MPa as material stiffness drops. • FEM accurately predicts damage trends with over 81% accuracy for rigid impacts. • Energy dissipation is the primary mechanical driver of pear tissue failure.

Keywords:

‘Dangshansuli’ pear

Drop impact damage

Coefficient of restitution

Contact stress distribution

Finite element method

Integration of high-speed imaging, pressure-sensitive film, and finite element method for predicting drop damage in postharvest collision of ‘Dangshansuli’ pears (Pyrus bretschneideri Rehd.) with different contact materials

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