Mistarihi Mahmoud Z, Al-Omari Ammar A, Al-Dwairi Abdullah F
Department of Industrial Engineering, Hijjawi Faculty for Engineering Technology, Yarmouk University, Irbid 21163, Jordan.
Department of Mechanical and Industrial Engineering, Faculty of Engineering, Liwa College of Technology, Abu Dhabi P.O. Box 41009, United Arab Emirates.
Biomimetics (Basel). 2023 May 8;8(2):194. doi: 10.3390/biomimetics8020194.
Musculoskeletal disorders and the stagnation of sitting are among the side effects of excessive sitting in awkward sitting positions. In this study, a developed chair attachment cushion design with an optimal air blowing technique is proposed to eliminate the negative side effects of prolonged sitting. Instantaneously reducing the contact area between the chair and its occupant is the fundamental goal of the proposed design. The fuzzy multi-criteria decision-making approaches represented by FAHP and FTOPSIS were integrated to evaluate and select the optimal proposed design. An ergonomic and biomechanics assessment of the occupant's seating position while employing the novel safety cushion design was validated using simulation software (CATIA). Sensitivity analysis was also used to confirm the design's robustness. Results show that the manual blowing system using an accordion blower was the optimal design concept based on the selected evaluation criteria. In fact, the proposed design provides an acceptable RULA index value for the examined sitting postures and performed very safely in the biomechanics single action analysis.
肌肉骨骼疾病以及久坐不动所导致的身体僵化是长时间以别扭坐姿就坐的副作用。在本研究中，提出了一种采用优化吹气技术的新型座椅附件靠垫设计，以消除长时间就坐的负面影响。瞬间减少座椅与其使用者之间的接触面积是该设计的基本目标。将以模糊层次分析法（FAHP）和模糊理想解排序法（FTOPSIS）为代表的模糊多准则决策方法相结合，对所提出的最佳设计进行评估和选择。利用模拟软件（CATIA）对采用新型安全靠垫设计时使用者的坐姿进行了人体工程学和生物力学评估。敏感性分析也用于确认该设计的稳健性。结果表明，基于所选评估标准，采用手风琴式吹风机的手动吹气系统是最佳设计理念。事实上，所提出的设计为所研究的坐姿提供了可接受的快速上肢评估（RULA）指数值，并且在生物力学单动作分析中表现得非常安全。
