Structural crashworthiness analysis of a ladder frame chassis subjected to full frontal and pole side impacts

Date

2016-01-01

Author

Dagdeviren, Semih
Yavuz, Mecit
Kocabas, M. Ozan
Unsal, Eren
Esat, Volkan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

37
views

0
downloads

Automobile chassis is a major element of structural crashworthiness in road motor vehicles. Various chassis geometry and topology research studies have been conducted to improve crash energy absorption characteristics of the chassis. In side impacts, crashworthiness of an automobile body depends not only on the chassis geometry and topology, but also on the design and reliability of other structural members such as B-pillar and side panels. This study aims to contribute to the investigations on the effects of chassis geometry over crashworthiness, particularly focusing on the structure of a ladder frame chassis subjected to full frontal and pole side collisions. Preliminary work has been conducted to evaluate the behaviour of steel beam profiles under impact loading through finite element (FE) modelling, which helps understand the mechanics of the particular beams chosen as chassis elements. Another FE model is developed utilising a previously generated mesh of a pickup truck with a ladder frame chassis. The FE model is employed to simulate full frontal and pole side crash test scenarios on the isolated chassis as well as on the whole body of the vehicle. Crash energy absorption results and reaction forces are collected for different thicknesses and beam profile cross sections of the vehicle chassis to be utilised in several proposed design improvements aiming to enhance crashworthiness. Computational results exhibit good agreement with experimental findings.

Subject Keywords

Mechanical Engineering, Industrial and Manufacturing Engineering, Transportation

URI

https://hdl.handle.net/11511/68170

Journal

INTERNATIONAL JOURNAL OF CRASHWORTHINESS

DOI

https://doi.org/10.1080/13588265.2015.1135522

Collections

Engineering, Article

Suggestions

OpenMETU
Core

Analysis of heat treatment effect on springback in v-bending Sarıkaya, Onur Turgay; Darendeliler, Haluk; Department of Mechanical Engineering (2008) Aluminum based alloys have wide area of usage in automotive and defense industry and bending processes are frequently applied during production. One of the most important design criteria of bending processes is springback, which can be basically defined as elastic recovery of the part during unloading. To overcome this problem, heat treatment is generally applied to the workpiece material to refine tensile properties. In this study, the effect of heat treatment on springback characteristics of aluminum stud...
Experimental determination of transfer functions for a car body-in-white Şentürk, Sabri; Ünlüsoy, Yavuz Samim; Department of Mechanical Engineering (2004) Vibration generated from various sources (engine, road surface, tires, exhaust, etc.) should be considered in the design of a car body. These vibrations travel through transfer systems (drivetrain, suspension, body, etc.) to the steering wheel, seats and other areas where it is detected by the passengers of the vehicle. Transmission routes must be studied and efforts made to keep transfer systems from amplifying vibration and to absorb it instead. Since the superior vibration transfer system is the car body...
Modeling of the dynamics of multi-axle steered vehicles Bayar, Kerim; Ünlüsoy, Yavuz Samim; Department of Mechanical Engineering (2006) Four wheel steering (4WS) is a concept proven to be beneficial in low speed applications requiring large steering angles, which is the case in city traffic or parking. By steering the rear wheels in the opposite direction to the front ones, maneuverability can be improved. However, a conflict is encountered at high speeds for all the steering strategies developed. If sharper response is achieved, this is at the expense of undesirably large vehicle sideslip angles. On the other hand, small vehicle sideslip a...
Assessment of sheet metal forming processes by numerical experiments Önder, İ. Erkan; Tekkaya, A. Erman; Department of Mechanical Engineering (2005) Sheet metal forming technologies are challenged especially by the improvements in the automotive industry in the last decades. To fulfill the customer expectations, safety requirements and market competitions, new production technologies have been implemented. This study focuses on the assessment of conventional and new sheet metal forming technologies by performing a systematic analysis. A geometry spectrum consisting of six different circular, elliptic, quad cross-sections are selected for the assessment ...
Analysis of high-g camera support structure for crash test system Erdoğdu, Mahmut Gökhan; Gökler, Mustafa İlhan; Department of Mechanical Engineering (2009) Sled Crash Test System is one of the key elements in todays high safety vehicle designs. In the crash test systems, high speed imaging by high speed cameras is required. For the success of high speed imaging, high speed cameras should be well secured on the sled of the system which is being accelerated to high-g values to simulate vehicle crash. In this study, structural analysis of the high – g camera support structure for the sled crash test sytem which is available in METU-BİLTİR Center Vehicle Safety Un...

Citation Formats

S. Dagdeviren, M. Yavuz, M. O. Kocabas, E. Unsal, and V. Esat, “Structural crashworthiness analysis of a ladder frame chassis subjected to full frontal and pole side impacts,” INTERNATIONAL JOURNAL OF CRASHWORTHINESS, pp. 477–493, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/68170.