中国汽车碰撞专属 “数字人”来了！

Core Viewpoint - The automotive industry is accelerating its transition to intelligence, leading to increasingly complex collision safety testing scenarios, highlighting the limitations of traditional crash test dummies in terms of biomimicry and damage data output [1] Group 1: Development of Digital Human Models - The Tianjin Inspection Center has successfully developed a standardized digital human model representing the 50th percentile of Chinese males, addressing long-standing technical challenges and establishing a new automotive safety testing system tailored to Chinese physical characteristics [1][5] - Digital human models have become a new type of anthropomorphic testing equipment, showcasing significant advantages in new scenarios such as high-angle collisions and intelligent driving, thus becoming a key competitive area in global automotive safety technology [3] Group 2: Challenges in Domestic Automotive Safety Testing - The domestic automotive safety testing field faces two major bottlenecks: existing digital human models are often based on single volunteer images, lacking a unified standard for widespread application, and mainstream models are based on Western body types, which do not accurately simulate the impact injuries of the Chinese population [3][5] Group 3: Technological Innovations - The project team at Tianjin Inspection Center has integrated multiple innovative technologies throughout the model development process, including geometric model construction, finite element model configuration, and validation work [6] - The geometric model construction phase utilized AI algorithms for batch processing of medical images, resulting in a human geometric model that accurately reflects the 50th percentile body parameters of Chinese individuals, characterized by realism, representativeness, and standardization [6][8] Group 4: Model Validation and Application - The finite element model construction employed refined modeling techniques to accurately reflect the physiological structure details and ensure the model's ability to represent the overall and local response characteristics of the human body under mechanical loads [8] - The standardized digital human model developed by Tianjin Inspection Center is the first fully parameterized biomechanical finite element model in China's automotive safety field, adaptable to various collision scenarios and intelligent driving, providing a high-level virtual testing tool for the automotive industry [9]