Robust topology optimisation design of the guiding arm bracket for vehicle suspension

Based on the theory of stochastic collocation method, the uncertain factors of the guiding arm bracket were simulated, and the optimal design was completed with the aim of minimising the structural flexibility. Firstly, the mathematical description of the uncertain factors was discussed. The sparse grid technique was used to filter the obtained integral nodes to improve the computational efficiency. Then, the optimal value and robustness of the objective function were described by using the mean and variance respectively. Combining with the stochastic collocation method, the mathematical model of the robustness optimisation was established. Finally, the feasibility of the robust topology optimisation (RTO) design method was verified by the suspension guiding arm bracket. The results show that the robust and reliable conceptual model can be obtained by using the sparse grid technique, and choosing the appropriate precision and variables can realise a good compromise between simulation economy and simulation precision.