摘要
高山滑雪是传统的冬季奥运会比赛项目,其中的刻滑回转动作蕴含了丰富的力学知识,非常适合作为实际案例用于力学专业教育及科普介绍中。本文分别应用达朗贝尔原理和梁的弯曲理论研究了高山滑雪运动员在刻滑回转动作中的身体倾斜和雪板变形这两个关键特征,结果表明了刻滑回转动作与人体姿态倾斜和滑雪板力学性能间的密切关系。本文所构建的力学模型简单易懂,所含知识点清晰明确,可作为力学相关课程的教学案例来培养学生解决实际问题的实践能力,也可作为科普案例来展示力学在人们日常生活中的应用实例。
Alpine skiing is a traditional Winter Olympics event. The carving turn technique in this competition contains a lot of mechanics phenomena, which is very suitable as a practical case to be used in mechanics course and in the introduction of popular science. In this paper, D’Alembert’s principle and beam’s bending theory are used to study the two key characteristics of alpine skiers’ body inclination and snowboard deformation during carving slalom, respectively. The results indicate close relationship between the carving outcome and body inclination/snowboard deformation. The mechanics model in this paper is simple and easy to understand, and it contains clear knowledge points. It can be used as a teaching case for mechanics courses to cultivate students’ practical ability for solving practical problems, and it can also be used as a popular science case to demonstrate the application of mechanics in people’s daily life.
作者
万超
易凯军
胡婧
罗凯
王宁
WAN Chao;YI Kaijun;HU Jing;LUO Kai;WANG Ning(Department of Mechanics,School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China;China Media Group,Beijing 100020,China)
出处
《力学与实践》
北大核心
2022年第2期479-483,共5页
Mechanics in Engineering
基金
教育部产学合作协同育人项目(202102079018)和教育部第二批新工科研究与实践项目(E-SXWLHXLX20202602)资助。
关键词
刻滑回转
高山滑雪
达朗贝尔原理
梁的弯曲
教学案例
科普
carving
alpine skiing
D’Alembert’s principle
beam’s bending
teaching case
popular science
