复合材料电梯层门强度特性研究  

Strength property of composite elevator landing doors

作　　者：陈栋栋 毛翰宇 杨凯杰 CHEN Dong-dong;MAO Hang-yu;YANG Kai-jie(National Elevator Product Quality Supervision and Inspection Center, Zhejiang Provincial Special Equipment Inspection and Research Institute, Hangzhou 310000, China;Elevator Inspection Office, Hangzhou Special Equipment Inspection and Research Institute,Hangzhou 310003, China)

机构地区：[1]浙江省特种设备检验研究院国家电梯产品质量监督检验中心,浙江杭州310000 [2]杭州市特种设备检测研究院电梯检验所,浙江杭州310003

出　　处：《机电工程》2019年第7期706-711,共6页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(U1709210)

摘　　要：针对电梯层门应用复合材料的强度特性问题,对层门门扇及筋板进行了复合材料反对称正交铺层设计,利用复合材料有限元法与Tsai-Wu强度失效准则,对其结构强度特性进行了研究。在层门型式试验验证有限元模型有效的基础上,分别选取单轴玻璃纤维环氧树脂(E-G)和碳纤维环氧树脂(E-C)材料,详细对比了不同层门门扇厚度、筋板个数对层门强度特性的影响。研究表明:在反正对称正交铺层设计下,E-G与E-C复合材料层门均可满足电梯层门设计要求,E-G与E-C复合材料横向压缩强度幅值数倍于横向拉伸强度,门扇内侧区域面内受最大拉伸应力,而外侧区域受最大压缩应力,其层门强度特性主要由横向应力分布主导,提高复合材料性能、门扇厚度和筋板个数目均可有效改善层门整体强度特性。Aiming at the problems of the elevator landing doors strength properties of composite material application, door panels and ribs were designed by anti-symmetric orthogonal layer. Their strength properties were studied through the composite material finite element method (FEM) and the Tsai-Wu strength criterion. Under the landing doors finite element model effective verified by the type tests, uniaxial epoxyglass fiber (E-G) and epoxy-carbon fiber ( E-C) were used to compare the strength property influence of different landing doors panel thickness and number of ribs in details. The results indicate that the E-G and E-C composite landing doors with anti-symmetric orthogonal layering design can meet the requirements. The transverse compression strength of composite E-G and E-C is several times higher than the transverse tensile strength. The inner surface of the landing door panel is subjected to the maximum tensile stress, while the outer region is subjected to the maximum compressive stress. The lateral stress distribution dominates the landing doors strength failure. The strength index value near the inner region panel is the largest. Improvement of material properties, panel thickness and the number of ribs can effectively improve the door strength.

关 键 词：复合材料 电梯层门 有限元法 Tsai-Wu强度准则 反对称正交铺层 

分 类 号：TH114[机械工程—机械设计及理论] TP24[自动化与计算机技术—检测技术与自动化装置]