【摘要】 民机适坠性碰撞安全仿真中乘员安全带常在CAD中完成建模后再进行有限元分析，但由于仿真分析中经常需要对假人位姿进行调整以及接触定义，对已完成三维建模的安全带模型再进行调整较为不便。民机中五点式安全带由于其肩带结构特点，在常用有限元分析软件中无法快速地生成准确避障的安全带模型，因此建立一种基于障碍信息的自适应安全带模型生成算法，可通过增添关键越障点实现自适应安全带模型自动生成，提高模型质量。更多还原

【Abstract】 In the crash safety simulation of civil aircraft, the occupant seat belts are modeled in CAD before the finite element analysis is performed. However, due to the frequent need to adjust the pose and contact definition of the dummy in simulation analysis, it is much inconvenient to adjust the seat belt model of completed 3D modeling. Owing to the structural characteristics of the shoulder straps of the four-point seat belt in civil aircraft, the common finite element analysis software fails to generate an accurate obstacle avoidance seat belt model quickly. Therefore, an adaptive seat belt model generation algorithm is established based on obstacle information, which can automatically generate the adaptive seat belt model by adding key obstacle crossing points and improve the quality of the model.更多还原