环型钓钩拉伸实验与ANSYS模拟的对比研究

为了解金枪鱼延绳钓钓钩的力学性能及验证ANSYS有限元分析方法的准确性,本文对环型钓钩(型号:3.4-4.5)进行拉伸实验和ANSYS模拟分析,并利用方差分析对其结果进行检验。研究表明:(1)两种方法得出的环型钓钩位移、应变等力学性能无显著性差异(P0.05),且最大应变为钩后弯及后侧,最大总位移为钩前弯及后侧,X方向最大位移为钩底及后弯,Y方向最大位移为钩前弯及后侧;(2)拉伸实验拉力为500、800和1 200 N时,钓钩的应变分别为0.002 76、0.008 14和0.069 94,X方向位移分别为1.8、3.5和7.2 mm,Y方向位移分别为-2.4、-4.6和-8.7 mm,总位移分别为2.8、5.4和10.6 mm;(3)ANSYS模拟与拉伸实验结果之间存在线性关系,拉伸实验得出的总位移、X、Y方向位移和应变分别为ANSYS模拟结果的1.0189、1.0272、1.019 5和1.088 3倍。建议今后可利用ANSYS有限元分析方法研究金枪鱼延绳钓钓钩的力学性能。

A comparison mechanical property of ring hook between tensile test and ANSYS simulation

In order to study the mechanical properties of tuna longline hooks, and to verify the accuracy of the finite element analysis method, this study conducted tensile test and ANSYS simulation on the ring hook (Type:3.4-4.5). The results of tensile test and ANSYS simulation were compared and tested by ANOVA. The results showed that: (1) there were no significant differences of the mechanical characteristics e.g. displacement or strain, measured by two methods (P>0.05). The maximum strain area was around the back bent and rear side. The maximum total displacement area was around the front bent and front axle. The maximum displacement in X direction was around the bottom and rear side. The maximum displacement in Y direction was around the back bend and back axle; (2) when the tension was 500, 800, and 1200N, the ring hook''s strain was 0.002 76, 0.008 14, and 0.069 94; the displacement in X direction was 1.8, 3.5, and 7.2 mm; the displacement in Y direction was -2.4, -4.6, and -8.7 mm; the total displacement was 2.8, 5.4, and 10.6 mm, respectively; (3) there was a significant linear relationship between the results of tensile test and those of the ANSYS simulation. The displacement in total, X, Y direction, and strain of tensile test were 1.018 9, 1.027 2, 1.019 5, and 1.088 3 times the ANSYS simulation. This study suggested that the ANSYS finite element could be used to analyze tuna longline hooks'' mechanical property.