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一前言物体受力后就要变形,表示受力物体的力与变形关系的载荷-位移曲线是分析一切材料(试件)和构件力学行为的依据。载荷-位移曲线通常是受力物体几何、加载方式、材料力学性能以及断裂行为的综合反映,本文通过对16MnR钢和两种匹配焊缝的CharpyV型缺口冲击试验的示波曲线上的特征参数和断口形貌参数的比较分析,提出了反映缺口冲击试件断裂规律的载荷-位移全曲线及其中断的概念,并讨论了这一概念的意义和作用。二实验 1 材料、试件和设备三种试验用材料为20mm板厚的16MnR钢和两种
A preface The object will be deformed after being forced. The load-displacement curve indicating the force and deformation of the stressed object is the basis for analyzing all the material (specimen) and the mechanical behavior of the component. The load-displacement curve is usually a comprehensive reflection of the geometry, loading method, mechanical properties and fracture behavior of the stressed object. Based on the characteristic parameters on the oscillometric curve of the CharpyV notched impact test of 16MnR steel and two matched welds and The comparative analysis of the fracture topography parameters, the full load-displacement curve reflecting the fracture rule of the notched impact specimen and the disruption of the fracture curve are put forward. The significance and function of this concept are also discussed. Two experiments 1 Materials, specimens and equipment Three test materials for the 20mm thick 16MnR steel and two