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A McPherson Lightweight Suspension Arm
Technical Paper
2020-01-0772
ISSN: 0148-7191, e-ISSN: 2688-3627
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Language:
English
Abstract
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.
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Authors
- Andrea Bernasconi - Politecnico di Milano
- Giampiero Mastinu - Politecnico di Milano
- Giorgio Previati - Politecnico di Milano
- Giovanni Belingardi - Politecnico di Torino
- Alessandro Scattina - Politecnico di Torino
- Marcello Chessari - Barnem Tecnologie Plastiche Srl
- Silvia Maccarinelli - Metal-Stampi di Maccarinelli e Cucchi
- Erico Spini - Radici Group
Topic
Citation
Belingardi, 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.Also In
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