Finite Element Analysis and Correlation with Physical Test of Tractor Hood Bang Endurance Test

2024-26-0071

01/16/2024

Authors
Abstract
Content
Tractors are machines primarily used for agricultural operations. However, tractors are used for various other application like loader, construction, haulage etc. There are many aggregates available in tractor like Engine, Transmission, Front hood assembly, Skid etc. and Hood is one such critical system in tractor, which encloses Engine and its associated parts. It is made of sheet metal with class 'A' surface finish for aesthetic purpose. Hood is locked using latch mechanism which is mounted on the tractor chassis. The main purpose of hood latch is to open and close the hood assembly during servicing. In some events, hood is closed by slamming which leads to structural failure and there is a need to validate hood assembly. This RWUP is replicated in lab as Hood bang test. To front load hood bang test, CAE methodology is developed and discussed in this paper. This paper focuses on FE methodology, process establishment of Hood bang simulation and correlation between CAE and test. FE model of the hood assembly is built using Hypermesh and dynamic simulation is done with Latch mechanism using LS-DYNA. Based on the results, durability of the component is predicted. Correlation is an important process which ensures high confidence in CAE results. So, Hood bang test was conducted to measure acceleration (g) and strain. Initial Correlation level was low, after examining the behavior and improving the FE modelling approach, good strain correlation is achieved, and acceleration trend is matching. This paper addresses the FE modelling process and challenges faced during hood bang simulation and to ensure No failure happens during hood bang test. Keywords: Hood Assembly, Dynamic simulation, Latch mechanism, LS-DYNA, Instrumentation & Measurement, Correlation & Validation.
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Citation
PANDEY, M., Kumar, A., Redkar, D., Perumal, S. et al., "Finite Element Analysis and Correlation with Physical Test of Tractor Hood Bang Endurance Test," SAE Technical Paper 2024-26-0071, 2024, .
Additional Details
Publisher
Published
Jan 16, 2024
Product Code
2024-26-0071
Content Type
Technical Paper
Language
English