激光焊接Web-core全钢三明治板的刚度分析  

Analysis on Stiffness of Laser Welded Web-core Steel Sandwich Plates

作　　者：蒋小霞[1,2] 朱亮[2] 乔及森[2] 刘伟[2] 吴毅雄[3] 陈剑虹[2] 

机构地区：[1]宁夏大学机械学院,宁夏银川750021 [2]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050 [3]上海交通大学上海市激光制造与材料改性重点实验室,上海201100

出　　处：《热加工工艺》2015年第15期162-164,168,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(51035004)

摘　　要：采用自行设计的满足简支条件的实验装置,对激光焊接Web-core全钢三明治板进行外伸三点弯曲试验,在弹性变形范围内测定左、右外伸端挠度、跨中挠度和载荷,并根据刚度分离法计算得到弯曲刚度和剪切刚度。试验测定的弯曲刚度为1.65×105N·m,剪切刚度为4.76×105 N·m。Web-core三明治板常用的3种刚度设计公式中都未考虑两芯板间面板的局部变形引起的挠度,从而计算的弯曲刚度比试验测定的值大,为试验值的5.2倍,剪切刚度比试验测定值小,为试验值的0.7倍。The over-hanging three-point bending tests were investigated on the laser welded web-core steel sandwich plates by self-designed device which can meet the simply supported conditions. In order to calculate the bending stiffness and shear stiffness based on stiffness separation, the left and right extended end deflection, span deflection and load were measured during the bending deformation, respectively. From the experiment, the bending and shear stiffness were determinated as1.65×105N·m and 4.76×105N·m, respectively. In the three kinds of common design formulas of Web-core sandwich plates,the local deformations of the face plate between the two core plates were not considered, thereby, the bending stiffness is 5.2times as large as the experimental result, and the shear stiffness is 0.7 times as large as the experimentally determined value.

关 键 词：激光焊接 Web-core全钢三明治板 弯曲刚度 剪切刚度 

分 类 号：TM7[电气工程—电力系统及自动化]