Papers by Keyword: Seat

Abstract: This article focuses on the biomechanical evaluation of the interaction between load forces to which a sitting man and the seat are mutually exposed. The load forces, which consider actual dispersion in the human population through histograms, are determined using a probabilistic method known as the Simulation-Based Reliability Assessment (SBRA). A simple flat model shows a basic and high-quality stochastic evaluation of all the forces that affect the man and the seat. The results and methodology can be used in many areas of biomechanics, ergonomics or industrial design.

Abstract: This project mainly studies the structure composition and the working principle of the seat vibration system of the roller . On this basis, dynamic equations are obtained according to the stress analysis of the simplified system of the seat vibration system of the roller, and then with the simulink module of MATLAB software, a simulation model is established as to the driver's seat system.Through the model simulation, the roller’s vibration of the the driver seat system is analysed,then based on the analysis, the optimization design can be done. Finally, through the research of this topic, the ride comfort of roller is been improved.

Abstract: To quickly predict the performance of the seat in frontal crash during the initial stage of the seat development, in this paper a simplified coupled dynamic model of seat-passenger interaction is established according to the dynamics analysis method of Lagrange, and the fourth order Runge-Kutta method is used to resolve differential equation. Moreover, the simulation of Madymo testifies the simplified coupled dynamic model of seat-passenger interaction in frontal crash. Therefore, this model will be effective and feasible in predicting the performance of the seat in frontal crash during the initial stage of the seat development, for example, the performance of anti-submarining protection.

Abstract: According to the report of WHO, the world population is rapidly ageing. Coming to the year of 2050, the proportion of the older population over 60 years will be 22%. The number of people aged 60 years and over is expected to 2 billion. Standing up movement is an important activity for human, because most activities in daily life are performed with standing position. The elderly with difficulty in standing up movement will strongly affect their daily activities. This study aims to propose an apparatus to assist standing up from sitting. A series of design methods and procedure including concept design, mechanism design, ergonomic design, and appearance design were performed in the study. Finally, an apparatus design was proposed with following features: (1) the appearance of the assistive device designed with an image of appetence; (2) a power-saving mechanism was designed which enabled users to elevate themselves easily; (3) a slow elevating mechanism was designed which enabled users to stand up slowly; (4) the of handlebar was operated at a position at elbow height which enabled users to exert maximum push force; (5) when the device elevated, the users enable to push maximum force to standing up; and (6) when the user was seated or absent for a long period, the handlebar can be located at a noninterference place. The results of design and the methods and procedure used in this study can be a reference for the product design.

Abstract: Abstract. In the highly developed stage of economy, information, technology and culture, system research has been conducted on human, furniture, space as well as environment by ergonomics to have the indoor environment adapt to people’s demands on life activities and to raise both the social materials and spiritual life to a new level, which has brought new value to the design world. Focusing on the main line “human-space-environment”, the analysis for a series of psychological and physiological activities produced when people sit on the seat indoors have been conducted on the basis of ergonomics and environment-related behavior theory. So that people can create a safe, healthy, cozy and high-efficient working and studying environment actively in the environment design.

Abstract: Presently, large passenger vehicles are known to have high risk of an injury due to accident and insufficient of safety regulation. The strength of seat is one of important issues that affect to injury level of passenger. Therefore, suitable structure strength and design of the seat are very important to prevent injuries and passenger life. This study was to evaluate strength of the seat structure for bus according to preliminary safety regulation of Department of Land Transport. Finite element analysis is employed by using a static load. The seat model was simplified and simulated. Stress and impact scenario between seat-back and back of manikin will be investigated. The strength and deflection of the seat will be evaluated. This study is expected to provide the seat model which will be safe and satisfied according to the regulation.

Abstract: In this paper, the magneto-rheological damper is installed in the seat, using semi-active control theory and methods, dynamics mathematical model of the magneto-rheological damper seat is established, the fuzzy semi-active controller based on the magneto-rheological is designed, and then the simulation analysis on the system is completed by the software of MATAB/Simulink. The results of simulation show that the semi-active seat based on the magneto-rheological can markledly suppress the vibration acceleration and improve the ride comfort of the seat.

Abstract: How seats can provide the best sitting posture is still a challenging subject in ergonomics. The researches on seats and sitting postures often need to measure physiological data or to record human’s subjective experience under a certain sitting posture. So to build a kind of multi-posture sitting bench has an important significance. The paper proposes a simple, reliable and less costly universal seat bench, whose size and shapes can be quantitatively, continuously and parameterized adjusted and which also can be adjusted to a variety of seat back curves by simulating spinal modeling. Based on Pro/ E software, two kinds of parameterized virtual simulation models are built, which can simulate deformation effects of the ergonomic seat bench easily and verify the correctness of data used to change the shape of bench.

Abstract: Seat is a main part of vehicle to contact with occupant in rear impact and chiefly concern with the severity of neck injuries. Therefore, improvement in seat design can effectively reduce the neck injuries of occupant. For designing an effective vehicle seat to protect occupant, this study develops the numerical model of sled test by using MADYMO software and discusses the relevance between the seat parameters and occupant’s neck based on the validated numerical model. The seat parameters include the stiffness of seat angle device, seat friction and angle of head restraint. The discussion of influencing factors of seat can be referred for designing a safety seat. The occupant neck then can be protected in rear impact accidents.

Abstract: The analysis on the physiological characteristics of the human body posture was carried out with the ergonomic principles from the perspective of human anatomy and physiology. The requirement for the structure and size of the passenger seat was discussed from the point of passenger comfort. Several design problems were analyzed with some recommendations for improvement.