能量法在“机械振动”课程中的教学难点与应用实践

Teaching Difficulties and Practice of Energy Method in the Mechanical Vibration Course

"机械振动"作为机械工程专业人才培养体系中非常重要的一门课程,基于力学基本原理建立反映工程结构振动规律的数学模型是课程教学的基础及核心内容之一。能量法在振动建模中的应用及其广泛重要,然而学生在能量法的应用中存在若干难以理解和易于混淆的要点问题,本文基于多年教学过程实践和教学效果反馈,对教师讲授和学生学习中普遍存在的难点问题进行剖析和释疑,促进学生对能量法的深入理解,强化学生对工程实际振动问题的准确建模和分析能力。

Mechanical vibration,as a main curriculum of great significance in the intelligence cultivation system of mechanical engineering major,involves a fundamental and core part,which is the mathematical model that reflects the vibration pattern of engineering structure based on elementary mechanical principles. The energy method has enjoyed a wide and substantial application in building vibration models. Yet many students tend to be confused and puzzled by some key points in the application. This article,through many years of teaching practice and class feedback,aims at analyzingand interpreting difficulties that are common in both the teaching and learning processes,advancing students to further comprehend the energy method,and strengthening the precise modeling and analyzing ability of students in practical engineering vibration problems.