基于模型更新的在线有限元起重机监测平台OA

Considering the lack of researches on real-time mechanical properties,safety early warning evaluation and stress state visualization of cranes during construction,a new online finite element crane monitoring platform based on structural model updating is proposed in this paper.Relying on the gantry crane and tower crane,the platform adopts the method of combining the safety state monitoring based on the Internet of Things with the finite element model updating calculation,and realizes the real-time change of the stress nephogram of the gantry crane with the lifting weight and the position of the trolley,as well as the updating and calculation of the finite element model driven by the height and boom angle of the tower crane.Among them,the 3D engine Three.js based on WebGL is used to visualize the finite element calculation results,and the real-time theoretical stress nephogram can be displayed by this engine,which can display the theoretical values more intuitively.The platform has the advantages of high precision and speed of finite element calculation,rapid response of safety alarm and good trial operation effect,and can be widely used in crane monitoring platform.