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摆锤式冲击试验机常用来测定材料在动荷作用下抵抗冲击力的性能。这种试验机的示值精度主要决定于机器的特性常数M与摆的扬角α(图1)。摆锤扬起时的位能: A_α=M(1—cosα) (1)式中: α——扬角; M——等于PL机器特性常数; P——摆锤重量; L——摆轴到摆锤重心的距离。
Pendulum impact testing machine used to determine the material in the dynamic load resistance to impact under the performance. The indication accuracy of this test machine mainly depends on the machine’s characteristic constant M and pendulum angle α (Figure 1). When the pendulum is raised, the potential energy is: A_α = M (1-cosα) (1) where: α - the angle of rise; M - is equal to the PL machine characteristic constant; P - weight of the pendulum; L - To the center of gravity of the pendulum.