镍钛合金发动机的性能探究  

Performance of engine composed by nickel-titanium alloy wire

作　　者：徐蕾 李可妤 钟鸣[1] XU Lei;LI Ke-yu;ZHONG Ming(College of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, China)

机构地区：[1]南京师范大学物理科学与技术学院,江苏南京210023

出　　处：《物理实验》2021年第10期59-63,共5页Physics Experimentation

摘　　要：将镍钛合金线圈套在2个滑轮上,把较小的滑轮浸入热水中,滑轮会转起来,从而构成了简易的发动机.本文建立微元模型对此现象进行了理论分析,通过实验对该发动机性能进行了深入研究,确定了金属丝变化的“敏感期”,并以此解释了相关参量对发动机性能的影响.In the experiment,the nickel-titanium alloy wire was placed on two pulleys,the smaller pulley was dipped in hot water.The pulleys would turn to form a simple engine.In this paper,a micro metamodel was established to analyze this phenomenon theoretically,and the experiment was used to study the performance of engine.In addition,the sensitive period of wire changes was determined,and the influence of relevant parameters on engine performance was explained.

关 键 词：镍钛合金丝 微元模型 发动机 弹性模量 

分 类 号：O4-33[理学—物理]