关键词: 可视化平台, 视景仿真, 破片威力场, 弹目交会, 毁伤评估, 物理驱动仿真, 有限元-离散元耦合

Abstract:

To address the limitations of incomplete physical modeling, low computational efficiency, fragmented simulation workflows, and insufficient visual immersion in existing damage simulations of fragment warheads, this paper proposes and develops a physics-driven, high-efficiency visualization platform for warhead-target engagement and damage assessment. The platform implements a full-chain, closed-loop simulation framework covering scenario configuration, force-field computation, fragment dispersion, warhead-target intersection, and damage evaluation. A finite element-discrete element coupled dynamics framework is established, integrating a detonation model, shell expansion correction, and fragment velocity inheritance to accurately reproduce the complete dynamic process from detonation to dispersion. A three-level acceleration algorithm based on a hierarchical bounding volume structure is designed and combined with CPU-GPU heterogeneous computing, achieving an overall speedup of 10³-10⁴ and maintaining sub-millimeter time-discretization and geometric-tolerance errors, enabling millisecond-level precise engagement between millions of fragments and complex targets. By incorporating multiple damage criteriaand leveraging the Three.js engine for real-time coupling of physical computation and 3D rendering, the platform supports dynamic visualization of fragment kinematics, engagement information, and multi-type damage contour maps. Simulation studies on a typical focused warhead, together with comparisons against published data, verify the platform's significant advantages in accuracy, efficiency, and extensibility. The proposed platform provides a reliable and versatile tool for warhead design and target damage assessment.

Key words: visualization platform, visual simulation, fragmentation lethality field, projectile-target engagement, damage assessment, physics-driven simulation, finite element-discrete element coupling