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Title: A comparative analysis and optimization of an automotive front bumper system using explicit finite elements method for high-velocity frontal impact
Authors: Sadaka, Tony E. Tarek Sadaka
Advisors: Saba, Nicolas 
Keywords: Reinforcement bumper, Front impact, ANSYS, Explicit dynamic analysis, EuroNCAP, high-velocity impact, Crashworthiness.
Subjects: Finite element method
Automobiles--Shock absorbers--Testing
Automobiles--Shock absorbers--Design and construction
Dissertations, Academic
University of Balamand--Dissertations
Issue Date: 2022
The development process of bumper systems in the automotive industry benefits from the utilization of Finite Element simulations to visualize and understand the crash performance of selected models during impact. Crash performance is typically verified under low-speed or high-speed impacts of crash scenarios while abiding by accepted standards intending to improve cargo and occupant safety. In order to analyze the viability of a model, several parameters are calculated based on impact data to determine the crashworthiness of the system, mainly Crash Force Efficiency (CFE) and Peak Crushing Force (PCF).
Within the current thesis, a methodology for identifying such parameters and properties is presented based on the Johnson-Cook plasticity model. The following work focuses on analyzing and enhancing such bumper systems under a 50 km/hr impact based on the EuroNCAP standard, limited to direct frontal impact. Explicit dynamic analysis was conducted on four structurally identical models of different material selections and one model employing generative design, a novel approach to topology optimization. Simulation results later determined each model’s crashworthiness to conclude a 15% increase in crashworthiness based on material selection under consistent conditions.
Includes bibliographical references (p. 107-112)
Rights: This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the personal and educational use exceptions must be obtained from the copyright holder
Type: Thesis
Appears in Collections:UOB Theses and Projects

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