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Experimental investigations aimed at understanding the impact mechanism of debris-resisting flexible barriers have been hindered by limitations associated with small-scale modelling and poor temporal predictability of real landslide debris events. The geotechnical centrifuge provides a means to simulate landslide impact by scaling the flow volume, impact energy and stress state appropriately. Nonetheless, a technical challenge remains in simulating large non-linear deformation of flexible barriers observed in a prototype. In this letter, the development and verification of a novel model flexible barrier for centrifuge testing are described. This model barrier consists of a series of spring elements to simplify the complex loading behaviour and to capture the key bilinear load–displacement response of a prototype flexible barrier. By measuring the dynamic response of barrier cables, no obvious peak impact load was …