Browse Publications Technical Papers 2024-28-0016

Modelling and Simulation Approach for Fiber-Reinforced Polymer Components in Passenger Car Engine Mounting Brackets 2024-28-0016

The function of powertrain mounts is to securely anchor the engine and gearbox within a vehicle, effectively absorbing vibrations and shielding the vehicle's body from powertrain movements and road irregularities. Traditionally crafted from aluminum, sheet metal, or cast iron, there has been a notable transition towards employing fibre-reinforced polymer (FRP) as a viable alternative. This shift is motivated by the potential to reduce weight and cost, alongside enhancing noise, vibration, and harshness (NVH) characteristics. This study aims to evaluate the relative strengths of existing brackets compared to those made of FRP, with a focus on their modal response and crash resistance. Due to the absence of a standardized method for modelling orthotropic materials in powertrain mounting brackets, this paper proposes a systematic approach to address this gap. By conducting a comprehensive literature review, FRP is examined and contrasted with other conventional materials currently utilized. Subsequently, a series of stress-strain and eigenmode finite element method (FEM) analyses is performed to assess the performance of various materials and material models. To validate the results, physical components are produced based on simulation outcomes and recommendations, followed by testing to confirm the correlation. Additionally, a case study is provided as an illustrative demonstration of this methodology. Keywords: Fibre-reinforced polymer (FRP), Mounting bracket, Simulation


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