【摘要】 以求铜棒的动态杨氏模量的传统实验方法为基础,改变实验中悬丝的材质,使用轻质细铜丝作为悬线,研究在新悬线吊挂下试样粗铜棒和试样细铜棒在不同悬挂位置对应的共振频率,用求平均值的方法求出节点处的共振频率,并求出铜棒的杨氏模量,误差较小,验证了使用细铜丝悬线这种实验方法的可行性。更多还原

【Abstract】 Based on the traditional experimental method to dynamic Young’s modulus of copper,it changed the suspension material,it used light and fine copper wires as the suspension lines,it researched the new suspension lines hanging specimen chili bar and specimen thin copper rod in different resonant frequencies corresponding to the position of suspension,Resonance frequency node is calculated by averaging method,And the date of Young’s modulus of copper rod was smaller error,it verified the feasibility of using fine copper suspension lines of this experimental method.更多还原