Finite Element Analysis And Light Weight Design Of New Steel Gate For Irrigation District

Flat gate structure is simple,easy to manufacture and install,it is widely used in the irrigation area.This project has developed a new type of steel gate for irrigated area.The gate control is based on Internet of Things to realize the remote operation of terminals such as computers and mobile phones.It not only can realize gate opening and closing,but also has the functions of controlling flow and monitoring water level.The gate drive by the servo motor,in order to reduce the lifting force,the gate needs to be lightweight design.The various parts of the gate system are analyzed and calculated.Based on the original lifting device,a new type of lifting method is proposed,which overcomes the problem that the former screw type is easy to bend and that the winch type opening and closing method cannot provide the power to close the gate.And the combination of the advantages of the two lifting methods to improve the applicability of flat steel gate.The traditional gate design method ignores the overall force characteristics of the gate,the gate is divided into single part to design and verification,which resulted in the design of some places more conservative,while in some places there may be insufficient safety margin,resulting in engineering accident.Advances in computer technology promote the development of finite element technology,which is a calculation method that uses a limited number of elements to approximate a real system.The subject is based on ANSYS finite element analysis software for irrigation area with a new steel gate simulation.Using the secondary development language APDL,the gate parameterization model was established,and the gate statics analysis was performed according to the most dangerous conditions,ie,the water level before the gate is the gate height and the water level after the gate is 0.Through theoretical analysis and optimization of structural parameters,the gate beam distribution is optimized before the gate weight is reduced to make the distribution more reasonable.Then,the gate quality is minimized as the objective function and the gate stress and deflection are used as the light-weight design constraints.This paper presents an optimization method using co-simulation with ANSYS and experimental design software Design-Expert.Using Design-Expert to establish the experimental design table,using ANSYS to analyze the parameters,we can get the gate quality,stress and strain under each parameter group.Finally,the gate quality is taken as the objective function,and the stress and deflection are used as constraints to optimize the optimization results.Compared with the ANSYS simulation,the results are roughly the same.After optimization,the gate to meet the stress and deflection conditions,the quality of the gate reduced about 20%,reducing the quality of the gate to reduce manufacturing costs and reduce the motor opening force,saving resources.Finite element analysis and optimization method for the gate design and check provide a theoretical basis to promote the development of irrigation gates.