论文部分内容阅读
应用等效刚度模型,按均质梁理论,计算激光焊接I型夹芯三明治板在三点弯曲状态下弹性阶段的挠度,得到挠度曲线,并利用ABAQUS有限元软件对其进行受弯性能数值模拟分析,得出加载点的荷载-位移曲线,并对理论挠度曲线进行验证。结果显示:挠度的理论值与模拟值吻合较好,在加载点处相差1.3%,说明应用等效刚度模型计算梁挠度准确性较高,并通过有限元分析得出了所研究三明治板的极限承载力,研究结果对今后激光焊I型夹芯三明治板的设计及应用具有一定的指导意义。
The equivalent stiffness model was used to calculate the deflection of laser-welded I-sandwich sandwich panels under three-point bending conditions according to homogeneous beam theory. The deflection curve was obtained and the bending behavior was simulated by ABAQUS finite element software The load-displacement curve of the loading point is obtained, and the theoretical deflection curve is verified. The results show that the theoretical value of deflection is in good agreement with the simulated value and the difference of 1.3% at the loading point shows that the accuracy of beam deflection is calculated using the equivalent stiffness model and the limit of the sandwich panel studied is obtained by finite element analysis Bearing capacity, the results of the study for the future laser I-sandwich sandwich design and application of sandwich has a guiding significance.