In order to explore the survival probability of multi-axle special vehicle tire system under battlefield threat and quantitatively characterize the anti-damage capability of tire system, a new method based on isodamage curves was proposed to characterize the battlefield anti-damage capability of the tire system. Aiming at the influence of tire damage on the whole vehicle, the mechanical characteristics of tire system were quantitatively characterized based on vehicle dynamics, and the calculation model of tire system functional damage was established. Based on the damage theory, the collision and quantitative analysis of shock wave overpressure field were carried out, and the calculation model of tire system physical damage was established. According to the position relationship between the burst core and the vehicle, the calculation model of the tire system isometric line was established by using the characteristic line for the vehicle in the whole area. A five-axle special vehicle was taken as an example to verify the characterization method. Results show that this characterization method can be applied to the characterization of the anti-damage capability of the multi-axle special vehicle tire system under battlefield threat, which lays a model foundation for the improvement of maneuvering avoidance and protection ability in the future.

In view of the problem that the current evaluation of the survivability of weapons and equipment is mainly statistical and lacks physical support, in order to establish the transmission relationship between the structural parameters and the protective performance of each component, the concept of invulnerability was proposed, and the invulnerability analysis method based on the limit damage and the invulnerability characterization method based on the generalized protection time were proposed. And through the index to the quantitative mechanism of combat missions, the task-oriented invulnerability evaluation method was proposed. Driving performance invulnerability was studied as an example. Results show that: the invulnerability analysis method based on the limit damage can realize the construction of physical transfer relation from physical space to performance space; the invulnerability characterization method based on the generalized protection time can reflect the comprehensive influence of amplitude distance and difficulty degree on invulnerability; the task-oriented invulnerability evaluation method can introduce operational mission requirements into invulnerability evaluation and reduce the influence of subjective weight assignment on evaluation results. Case analysis verify the feasibility and effectiveness of the proposed method.