Progressive failure of bamboo-steel adhesive bonding interface subjected low-energy impact and tension in sequence

Bamboo-steel composite structure is a newly developed structure, composed of bamboo plywood and cold-formed thin-walled steel bonded by structural adhesive. This paper configured a three-dimensional (3D) numerical model to characterize the progressive failure of bamboo-steel adhesive bonding interface subjected low-energy impact and tension in sequence. A 3D cohesive zone model (CZM) with reloading trapezoid softening law was adopted to characterize the debonding behavior of the bamboo-steel interface. Investigations on the debonding damage propagation of the bamboo-steel interface subjected low-energy impact and tension after impact were completed, and the influence factors of the residual tensile strength were studied.