Crepe Rack Finite Element Analysis And Optimization Design Study

Crepper is an important equipment in the beginning processing of natural rubber and its main role is to remove impurities in rubber and make rubber evenly mixed besides dehydration,washing and creping. The Crepper frame is the installation base of the entire Crepper, which supports all the working force, So it needs enough strength and stiffness to endure shock and vibration on working condition. The frame structural parameters are generally designed by experience in traditional methods, lacking accurate strength calculating and the mass distribution is unreasonable, So it's easy to waste material or appearing insufficient strength phenomenon.The widely used structural analysis and optimization technology which based on the finite element method can effectively reduce product development costs, shorten product development cycles, improve product quality and reliability. The paper takes casting and welding frame of the Crepper as research objects and ANSYS as analysis tool, studies the strength and stiffness of the frame and finds out the place where the largest stress and deformation happens and the place most prone to damage, then on that basis, the finite element model of casting and welding frame are built by APDL parametric modeling method. By optimizing the geometry dimension of the casting frame and the position of the cross brace and its thickness of the welding frame, finding out the lightest design of the both frame. Finally the results are validated by discrete optimization. The optimization design of frame in this paper is to meet the requirements under the premise of maximum lowering the weight, which undoubtedly have the important practical value.Frame in the work environment will be inevitable under various forms of vibration and shock, in order to prove the frame structure after optimization not only meet the static requirements, but also meet the dynamic requirements. In this paper, using Block Lanczos method, frame model after optimization is analyzed by modal analysis and the both frame exist some bending and torsion in every direction under outside inspiriting, but still meet the application requirements.The study of the paper provides both finite element analysis result and design optimization result of minimum weight, it aslo provides a theoretical basis for large-scale design of frame. The paper explores a new design method for Crepper frame design and modal analysis laid the foundation for further dynamic analysis.