大学物理实验材料力学专业实验同济大学物理实验中心仪器简介杨氏模量是表征材料力学性质的一个物理量,仅取决于材料本身的物理性质。根据胡克定律,在物体的弹性限度内,应力与应变成正比,比值被称为材料的杨氏模量。针对原有的一些拉伸法杨氏模量实验仪在测量金属丝长度形变时的不足,近距转镜杨氏模量仪提供了改进的测量方案,其优点包括:最大限度缩短望远镜与实验架的距离,便于实验者调节仪器;引入拉力传感器,使所加应力数值准确且连续可 College Physics Experiment Material Mechanics Experiment Tongji University Physics Experiment Center Introduction to Young’s modulus Young’s modulus is a physical quantity characterizing the mechanical properties of materials, and only depends on the physical properties of the material itself. According to Hooke’s law, stress is proportional to strain within the elastic limit of the object, and the ratio is called the Young’s modulus of the material. Some of the original tensile Young’s modulus test instrument in the measurement of wire length deformation of the short, near-turn mirror Young’s modulus instrument provides an improved measurement program, the advantages include: to minimize telescopes and experiments The distance of the stand makes it easy for the experimenter to adjust the instrument; the pull-in sensor is introduced so that the applied stress is accurate and continuous