Modelling and Analysis of Thermomechanical Stress at Connected Areas of Mini-lifting equipment using Three Different Methods

Mini lifting equipment with permissible load of 150 kg are used to perform the main functions such as moving, lifting people and things at constructive works or fire protection projects. During lifting, the device is always affected by many factors such as mass, gravity, load, lifting speed, and others. This paper focuses on simulation and analysis of differences in stress distribution at connected joints of this lifting device in life-cycle after working oscillation process. In this paper, three different methods were used, including finite element analysis, method of separation of nodes, and method of using CAD software to simulate and evaluate stress differences at these positions. With permissible working cycle under the assumption based on the rotation speed of the joint position, the result has shown the maximum and smallest value after meshing and analysing during simulation. Keywords— Mini lifting equipment, finite element analysis, separation of nodes, stress distribution, CAD simulation.