湖南大学学报（自然科学版）2025，Vol.52Issue(10)：58-67,10.DOI:10.16339/j.cnki.hdxbzkb.2025206
特定载荷条件下飞行员座椅靠背优化设计
Optimization Design of Pilot Seat Backrest under Specific Loading Conditions
摘要
Abstract
To optimize the pilot seat backrest and reduce the pressure of the shoulder blade region and the stress of the lumbar intervertebral disc under specific loads,a hybrid finite element model encompassing the pilot seat,safety belt,safety helmet,and human body model was constructed in this paper.The maximum pressure on the human shoulder under+1gX load was measured through volunteer experiments to validate the model's effectiveness,and the pressure threshold when the scapula was constrained was determined to be 57 kPa.A shoulder cushion and four distinct lumbar support structures were established on the fundamental model.The same load was applied to analyze the biomechanical responses of the human body model with and without the lumbar support and shoulder cushion,as well as the optimization degrees of the four lumbar support structures with different positions and connection methods on the stress of the lumbar intervertebral discs and the pressure in the scapular region of the human body model.The results indicate that all four lumbar support schemes can reduce the stress of the lumbar intervertebral discs to a certain extent.Among them,the low-position rigidly connected lumbar support structure exhibits the best optimization effect.The optimization rate is 33.13%under+1gX load,44.25%under+3gX load,and 42.61%under+6gX load,respectively.The pressure in the scapular region is decreased by 83.7%and is lower than the pressure threshold when the scapula is constrained.关键词
腰部支撑/有限元模型/生物力学/优化设计Key words
lumbar supports/finite element model/biomechanics/optimization design分类
基础医学引用本文复制引用
李凡,雷康,惠双依,颜小赛,马骏,杨鹏..特定载荷条件下飞行员座椅靠背优化设计[J].湖南大学学报（自然科学版）,2025,52(10):58-67,10.基金项目
国家自然科学基金资助项目(51205117),National Natural Science Foundation of China(51205117) （51205117）
