Creep analysis of Water tank made of Polypropylene (PP) and High-Density Polyethylene (HDPE) polymer material using ANSYS Simulation

  • Sudeepan Jayapalan Department of Chemical Engineering, Birla Institute of Technology, Mesra, Ranchi, India.
  • Krishn Vijay Department of Chemical Engineering, Birla Institute of Technology, Mesra, Ranchi, India.


The present study investigates the creep behavior of water tank manufactured from Polypropylene (PP) and High-Density Polyethylene (HDPE) polymeric material using ANSYS simulation software. Creep fracture is one of the major industrial problems when a product is used for a long period of time. The creep analysis by using simulation software is one of the ways to predict the life and durability of a plastic product and may help in optimizing its design. The PP and HDPE manufactured water tanks are commonly used for storing water in household and industrial applications. In this paper, a water tank was designed by using an academic 3-Dimensional SOLIDWORKS software and for analyzing the creep strain for the developed CAD model, ANSYS WORKBENCH were used. The CAD modelled water tank was tetrahedron meshed and simulated by using static structural analysis and the varying hydrostatic pressure were applied on the inner walls of the tank. The base of the tank was constrained to fixed. The analytical model based modified time hardening creep model were implemented to analyze the creep strain. From the simulation, equivalent (Von-Misses) Stress, equivalent creep strain and total deformation were observed for the developed model. The obtained Creep strain-time graph were used to analyze the creep strain of PP and HDPE materials over time. The simulated limiting creep strain of PP as well as HDPE was in good agreement with the comparison of maximum limiting creep strain calculated from the material database.

Chemical Engineering