非晶固体动态力学弛豫分数阶黏弹性模型的教学方法  

TEACHING APPROACHES FOR A FRACTIONAL-ORDER VISCOELASTICMODEL OF DYNAMIC MECHANICAL RELAXATIONIN AMORPHOUS SOLIDS

作　　者：乔吉超 崔静波 梁淑一 朱凡 QIAO Jichao;CUI Jingbo;LIANG Shuyi;ZHU Fan(School of Mechanics,Civil Engineering and Architecture,Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]西北工业大学力学与土木建筑学院,西安710072

出　　处：《力学与实践》2024年第5期1072-1078,共7页Mechanics in Engineering

基　　金：国家自然科学基金(51971178,52271153);陕西省杰出青年基金(2021JC-12)项目资助。

摘　　要：动态力学弛豫是理解非晶态固体力学/物理性能的一种重要手段。本文从基本的理论模型出发,介绍了弛豫行为的特性,并从最简单的德拜弛豫模型推广到适用于描述非晶固体动态弛豫的分数阶黏弹性模型,最后结合非晶合金的动态弛豫行为,介绍了分数阶黏弹性模型在工程实践中的应用。本文综合了笔者近几年对于非晶合金动态力学弛豫理论的教学实践,根据学生课堂学习效果,从教学内容与方法逻辑等方面进行探讨。本文教学方法可为讲授非晶固体动态弛豫相关课程的教师提供思路和方法。Dynamic mechanical relaxation behavior is an important method to understand the mechanical/physical properties of amorphous solids.On the basis of the fundamental theoretical models,we introduced the characteristics of dynamic relaxation behavior.The Debye relaxation model and fractional-order viscoelastic models were used to describe the dynamic relaxation behavior of amorphous solids.Importantly,incorporating the dynamic relaxation behavior of amorphous alloys,the application of fractional-order viscoelastic model in experimental research and engineering practices was discussed.This paper integrates the author’s recent years of teaching and practical experience in the theory of dynamic mechanical relaxation of amorphous alloys,combining discussions on teaching content and logical methods based on students’classroom learning outcomes.The teaching methods presented in this paper could offer insights and approaches for instructors teaching courses related to the dynamic mechanical relaxation of amorphous solids.

关 键 词：动态力学弛豫 分数阶模型 非晶合金 教学方法 

分 类 号：O345[理学—固体力学]