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wiki/concepts/Chaos-Physics.md
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wiki/concepts/Chaos-Physics.md
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title: "Chaos Physics"
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type: concept
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tags: ["unreal-engine", "physics", "destruction", "chaos-engine"]
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sources: ["unreal-systems-engineer"]
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last_updated: 2026-05-30
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---
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## Aliases
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- Chaos Destruction System
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- UE5 Chaos Physics Engine
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- Geometry Collections
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## 定义
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Chaos 是 UE5 的物理与破坏系统,提供实时网格破碎、刚体约束和高级物理模拟能力。
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## 核心组件
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### Geometry Collections
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- 用于实时网格破碎的破碎几何体集合
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- 在 Fracture Editor 中制作破碎资产
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- 通过 `UChaosDestructionListener` 触发破碎事件
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### Constraint Types
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Chaos 支持多种约束类型:
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- **Rigid**(刚性)— 固定断裂块之间的连接
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- **Soft**(柔性)— 允许一定形变的连接
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- **Spring**(弹簧)— 带弹性的连接
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- **Suspension**(悬挂)— 模拟悬挂系统
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### Destruction LOD
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- 近景:完整 Chaos 模拟
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- 远景:缓存动画播放(降低计算开销)
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## 性能分析
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使用 **Unreal Insights** 的 Chaos 专用 trace 通道分析物理求解器性能。
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## 相关概念
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- [[Actor Replication]] — 破碎物理的网络复制注意事项
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- [[UnrealEngine5]] — Chaos 是 UE5 的内置物理引擎
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