Design and Finite Element Analysis of a Hydraulic Excavator Boom

Abstract

In today’s world of growing competition, all industries are trying their best to give the components of high quality with minimum expenditure. So in present work a new semi-elliptical boom has been selected to replace the conventional boom, which is usually made of rectangular. In particular, the study wants to substitute the rectangular section for Semi-elliptical section. This change lightens the weight of the boom. For this purpose, boom with semi-elliptical cross-section has been modeled using cad software pro/E wildfire 4.0. Using VB program automatic calculation module (UPAS), the static force at different working condition of the boom calculated. Then Finite element analysis has been done to determine the static stress at a given load condition using software ANSYS 12. The result shows that total weight is reduced by 5%. The value of maximum stress and displacement is 115.663MPa and 12.885 mm respectively. Thus the structure is capable of withstanding the maximum stress. The structure is failsafe. In this paper only static stress analysis is done.

Modal analysis of hydraulic excavator working device based on workbench

“…The 3D solid model of the working device of the hydraulic excavator was established in Solidworks software, which was imported into Ansys Workbench in the format of intermediate data.x_t to establish the finite element model [4]. Before the modal analysis, the model is simplified and cleaned to remove the geometric features such as threaded holes, rounded corners and chamferes, which have little influence on the analysis results, so as to increase the calculation accuracy and efficiency of the simulation [5].…”