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In this article, a physico-mathematical model of external forces related to reducing the static load of the body of workers and people who use video terminals or computer monitors in a sitting position is developed. Reducing the load on the muscles of the human musculoskeletal system associated with the position of the body allows users of video terminals or computer monitors to dramatically reduce the static load in a sitting position. Therefore, in order to bring the torso position that users of video terminals or computer monitors take for a long time, it is necessary to ensure the balance of the reaction forces of the biolink of the musculoskeletal system of the human body sitting on the chair and the reaction forces of the chair parts. Based on the developed models, a theoretical analysis was carried out, the equations of the equilibrium conditions of the forces in the physical model made it possible to create a mathematical model. By analyzing the created mathematical model, the minimum contraction force of the human musculoskeletal system, that is, the conditions of the muscles involved in maintaining the posture of workers and people during work during
the sitting position, was determined. The conditions obtained on the basis of the specified mathematical model are used in the development of the model of the course layout, which allows to ensure the "neutral position" of the human body and calculate the values of the design parameters.

  • Internet havola
  • DOI
  • UzSCI tizimida yaratilgan sana 16-04-2024
  • O'qishlar soni 24
  • Nashr sanasi 31-03-2023
  • Asosiy tilIngliz
  • Sahifalar84-94
English

In this article, a physico-mathematical model of external forces related to reducing the static load of the body of workers and people who use video terminals or computer monitors in a sitting position is developed. Reducing the load on the muscles of the human musculoskeletal system associated with the position of the body allows users of video terminals or computer monitors to dramatically reduce the static load in a sitting position. Therefore, in order to bring the torso position that users of video terminals or computer monitors take for a long time, it is necessary to ensure the balance of the reaction forces of the biolink of the musculoskeletal system of the human body sitting on the chair and the reaction forces of the chair parts. Based on the developed models, a theoretical analysis was carried out, the equations of the equilibrium conditions of the forces in the physical model made it possible to create a mathematical model. By analyzing the created mathematical model, the minimum contraction force of the human musculoskeletal system, that is, the conditions of the muscles involved in maintaining the posture of workers and people during work during
the sitting position, was determined. The conditions obtained on the basis of the specified mathematical model are used in the development of the model of the course layout, which allows to ensure the "neutral position" of the human body and calculate the values of the design parameters.

Русский

В данной статье разработана физико-математическая модель внешних сил, связанных со снижением статической нагрузки на тело рабочих и людей, использующих видеотерминалы или мониторы компьютеров в положении сидя. Снижение нагрузки на мышцы опорно-двигательного аппарата человека, связанной с положением тела, позволяет пользователям видеотерминалов или мониторов компьютеров резко снизить статическую нагрузку в положении сидя. Поэтому для приведения положения туловища, которое длительное время принимают пользователи видеотерминалов или компьютерных мониторов, необходимо обеспечить баланс сил реакции биозвена опорно-двигательного аппарата тела человека, сидящего на стуле, и силы реакции частей стула. На основе разработанных моделей проведен теоретический анализ, уравнения условий равновесия сил в физической модели позволили создать математическую модель. Путем анализа созданной математической модели определена минимальная сила сокращения опорно-двигательного аппарата
человека, то есть состояния мышц, участвующих в поддержании позы рабочих и людей при работе в положении сидя. Условия, полученные на основе указанной математической модели, используются при разработке модели схемы трассы, позволяющей обеспечить «нейтральное положение» тела человека и рассчитать значения конструктивных параметров.

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