Determination of Natural Frequency of Ro Plant Frame and its Non-Linear Stress Analysis Using Ansys

Abstract

Industrial RO plant frames are made with MS and has significant utilization to mount all necessary peripherals to achieve balanced structural integrity, smooth fluid flow and significant utilization of space. As per the weight capacity and the number of components mounted on the frame structure, it varies in size and shape. As it’s a structural part and subjected to loading under various running and vibrating components, is frequently undergoes under vibrations, stresses and the varying loads. Hence the knowing behavior of frame under such conditions is prime area of interest while its development. Most of such frames are designed by considering metal MS with L, H and rectangular sections. Combinations of such sections are often observed to provide stiffness to withstand at loading and vibrating conditions. A proper method is be followed while designing such frames for RO plant. Different parameters like natural frequency, factor of safety, yield strength, loading positions etc are considered. Despite of all these parameters natural frequency is one of the most important parameter, which directly intended to survive in higher vibrating conditions.Hence knowing natural frequency of frame structure will help to make frame structure stable during vibrations. Modern FEA packages like ANSYS can be utilized to find the natural frequency of any engineering objects and can also predict the possible stress and deformation in a structure with their location. In this project determination of natural frequency and stress deformation values along is to be determined for RO plant frame with 2000 ltr capacity tank. It can be done by creating CAD model of frame structure in CAD tool like Solidworks and then imported to FEA package ANSYS Workbench. By applying boundary conditions and metal properties to this virtual frame after meshing (CAD Model) natural frequency and stress, deformation is generated. These values are later validated with advanced engineering formulas utilized to find stress and deformation in structure. Factor of safety also calculated with these calculations.