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A McPherson Lightweight Suspension Arm
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2020 by SAE International in United States
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The paper deals with the design and manufacturing of a McPherson suspension arm made from short glass fiber reinforced polyamide (PA66). The design of the arm and the design of the molds have been made jointly. According to Industry 4.0 paradigms, a full digitalization of both the product and process has been performed.
Since the mechanical behavior of the suspension arm strongly depends on constraints which are difficult to be modelled, a simpler structure with well-defined mechanical constraints has been developed. By means of such simple structure, the model for the behavior of the material has been validated. Since the suspension arm is a hybrid structure, the associated simple structure is hybrid as well, featuring a metal sheet with over-molded polymer. The issues referring to material flow, material to material contact, weld lines, fatigue strength, high and low temperature behavior, creep, dynamic strength have been investigated on the simple structure. The detailed understanding gained with the simple structure has been transferred on the actual suspension arm.
The McPherson arm has been produced and withstood the technical specifications.
- Giovanni Belingardi - Politecnico di Torino
- Andrea Bernasconi - Politecnico di Milano
- Marcello Chessari - Barnem Tecnologie Plastiche Srl
- Silvia Maccarinelli - Metal-Stampi di Maccarinelli e Cucchi
- Giampiero Mastinu - Politecnico di Milano
- Giorgio Previati - Politecnico di Milano
- Alessandro Scattina - Politecnico di Torino
- Erico Spini - Radici Group
CitationBelingardi, G., Bernasconi, A., Chessari, M., Maccarinelli, S. et al., "A McPherson Lightweight Suspension Arm," SAE Technical Paper 2020-01-0772, 2020, https://doi.org/10.4271/2020-01-0772.
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