摘要
人体长时间就座引起的疼痛与就座时臀-腿部软组织的应力分布有关,运用ABAUQS和HyperMesh有限元分析软件,构建了人体臀-腿部与座椅接触界面的有限元分析模型,仿真得出了就座时人体臀-腿部软组织的应力分布.根据三维应力分布的特点,通过对Xm、Ym和Zm3条路径的分析,同时运用体压分布测量系统对人-椅界面压力的分布进行了测量.仿真试验结果表明,当人体就座时,臀-腿部软组织内部的应力远大于界面应力,最大应力发生在坐骨结节下方,并向四周逐渐减小,骨骼与软组织界面层的应力最大,而肌肉层与皮肤-脂肪层界面的应力最小.该研究结果可使人们更好地理解长时间就座引起疼痛的原因,同时也为座椅人性化设计提供了有效的参考数据.
The pressure sores due to long-term sitting are often related to soft tissue stress distri- bution in hip-legs. Finite element （FE） models of the interface between hip-legs and seat pan are established with ABAUQS and HyperMesh to obtain the soft tissue stresses distribution in hiplegs. The stress distribution is analyzed along three central paths （Xm ,Ym and Zm） ,and the body pressure distribution within the human-seat interface is measured simultaneously. The FE analysis shows that the stresses in soft tissue get much more violent than them in the interface and the maximum stress is located under the ischial tuberosities. The stress in the bone-tissue interface is the maximal and the stress in the muscle-fat interface is the minimal. The veracity of FE analysis is estimated by the comparison between the data obtained by measure and simulation.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2008年第5期569-572,共4页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金资助项目(50475090)
教育部新世纪优秀人才支持计划资助项目(NECT-04-0927)
关键词
软组织
应力分布
就座
有限元
人性化设计
soft tissue
stresses distribution
sitting
finite element
humanized design
