摘要
基于PASCO材料拉力装置,利用转动传感器和力传感器计算机辅助技术,采用拉伸法来测量金属丝的杨氏模量。研究发现,PASCO装置自带的Capstone软件能快速绘制应力-应变图,测量出杨氏模量值。为验证实验结果的准确性,进一步通过LAMMPS软件结合分子动力学理论来模拟拉伸微观过程中的应力-应变图,绘出拉伸过程四个阶段的微观原子图。结果发现,理论模拟所得图像与实验测量图像基本一致。实验测量方法不仅大大提高了实验的简便性和实用性,也为大学物理实验教学提供了一种新的数字教学手段,对学生积累科研经验大有裨益。
Based on PASCO material tension device, the Young’s modulus of metal wire is measured by the method of tension using the computer aided technology of rotation sensor and force sensor. It is found that Capstone software on PASCO can automatically draw stress-strain diagram and quickly measure Young’s modulus. In order to verify the accuracy of the experimental results, we further simulated the stress-strain diagram in the micro tensile process by using the LAMMPS software combined with the molecular dynamics theory, the micro atomic diagram in the four stages of the tensile process were drew. The results show that the theoretical simulation images are basically consistent with the experimental measurement images. The experimental measurement method in this paper not only improves the simplicity and practicality of the experiment, but also provides a new digital teaching method for college physics experiment teaching, which is also benefit to students’ accumulation of scientific research experience.
作者
庄彬
杨艳敏
ZHUANG Bin;YANG Yanmin(College of Physics and Energy,Fujian Normal University,Fuzhou 350108,China)
出处
《实验室科学》
2021年第2期45-48,54,共5页
Laboratory Science
