Static Analysis of Gearbox Casing Using Submodeling Approach in ANSYS Syed Rizwan Ul Haque Mechanical and Electrical Engineering College Harbin Engineering University Heilongjiang, Harbin, China syedrizwanulhaq@hotmail.com Prof. Dongyan Shi Mechanical and Electrical Engineering College Harbin Engineering University Heilongjiang, Harbin, China dongyanshi@gmail.com Azouz Radhia Mechanical and Electrical Engineering College Harbin Engineering University Heilongjiang, Harbin, China radiaazouz@yahoo.com Tauseef Ahmed Information & Communication Engg. College Harbin Engineering University Heilongjiang, Harbin, China tausiiif@yahoo.com Abstract:-The present shipbuilding industry is booming at a faster pace. Owing to this there is a demand for higher durability target, reduced product development cycle time and lower design costs. Simulation happens to be an effective and reliable too to meet this demand. The paper explains the use of analysis software in the design of gearbox casing. The gearbox casing houses important transmission component like gears and shafts. Thus the strength of the gear box casing is an important parameter to be taken into account while designing. In order to assess the strength, of the gearbox casing, a step by step approach is adopted. It was statically analyzed using simulation software Ansys. The analysis was carried out on two different models global or coarse model and submodel. Thus the scope of the paper is limited to statically analyze and using a submodel method for analyzing. Keywords- Static analysis; gearbox cashing; Submodeling; and FEA; I. Introduction: Simulation happens to be a reliable tool in design and development of gearbox components [1]. The software employed in the analysis of the design is Ansys 11.0. The objective of the paper is to emphasis on static analysis by using submodeling approach of the Gearbox casing especially its hook. The gearbox casings play a vital role as they house the transmission components. The different components in housed are gears, bearings and shafts. The strength of the whole gearbox casing is important due to it have to withstand both static and dynamic loading [1]. And the strength of the gearbox casing’s hooks as well has important during the lifting off and fixing the gearbox. The main emphasis of this paper is on static analysis by application of submodeling method. Submodeling utilizes two separate models. A full or global model representing the entire structure is used to transform global loads to local deformation. The submodel includes the local geometric details with an appropriate mesh density. The submodeling algorithm then interpolates the deformation from the global model to the submodel “cut boundaries” and solves for the local stress state [2]. The main emphasis of the paper is on the static analysis using submodel approach on hook of the gearbox casing. The first and the foremost step are preparing a proper process plan for the analysis of Gearbox Casing’s hooks. Studying it from the design and assembling point of view. This process plan involves building the CAD model for analysis, determining the boundary conditions, studying the material properties and the loading pattern [1]. II. Model: A. CAD Model The figure 1 gives the pictorial representation of the gearbox casing consist of Upper cover, bottom and hooks. The casing is modeled in high end design software (Pro/E) which is simpatico with simulation software. The important parametric quantity while designing the gearbox casing is the ribbing which is to be provided in order to attain the required strength, thus simulation happens to be an effective tool in proper design detailing. The CAD model of gearbox casing specification is length= 1070mm.