This paper investigates platoon control under denial-of-service (DoS) attacks. Unlike conventional formations, this study primarily focuses on leaderless vehicle platoons and develops a corresponding model. Since communication among vehicles in the platoon is not only disrupted by DoS attacks but also constrained by limited network resources, a resilient dynamic event-triggered mechanism is proposed. Based on this mechanism, an event-triggered distributed formation control strategy is developed. Furthermore, a Lyapunov function is constructed, which provides a rigorous proof of system stability and a scheme for controller gain design. Finally, a simulation of a four-vehicle platoon model under DoS attacks based on sampled-data event-triggered is designed to further verify the effectiveness of the proposed control strategy and the stability of the vehicle platoon system.