Research Article

Integration of Topology Optimization and ANN-Based Shape Optimization for Weight Reduction of a Control Arm

Volume: 10 Number: 3 September 9, 2026

Integration of Topology Optimization and ANN-Based Shape Optimization for Weight Reduction of a Control Arm

Abstract

This study employs an integrated approach using topology optimization, artificial neural networks (ANN) based models, and meta-heuristic algorithms to reduce the weight of a lower control arm, a component of automotive suspension. First, topology optimization of the part was performed using the finite element method, resulting in a 7.83% reduction in the weight of the lower control arm compared to the main model. Following topology optimization, the lower control arm was redesigned, six geometric design variables were created, and ANN-based proxy models were developed to estimate mass-stress values. These proxy models achieved faster and more efficient optimization than the finite element method. During the optimization process, comparisons were made with Genetic Algorithm (GA), Grey Wolf Algorithm (GWO), and Starfish Optimization Algorithm (SFOA). The results showed that meta-heuristic optimization reduced the weight of the lower control arm by approximately 11.4%, while the maximum stress increased by approximately 6%. Despite this increase in stress, the component remained within safe operating limits. Among the evaluated algorithms, SFOA produced a marginally lower weight estimate than GA and GWO under the adopted optimization settings. As a result of the study, it was shown that meta-heuristic algorithms supported by ANN-based surrogate models can be used for weight reduction in automotive sub-control arms.

Keywords

References

  1. Lee S, Kang N. Vehicle suspension recommendation system: multi-fidelity neural network-based mechanism design optimization. Struct Multidiscip Optim. 2025;68(3):44. https://doi.org/10.1007/s00158-024-03957-x
  2. Romero J, Queipo N. Reliability-based and deterministic design optimization of a FSAE brake pedal: a risk allocation analysis. Struct Multidiscip Optim. 2017;56(3):681-695. https://doi.org/10.1007/s00158-017-1747-8
  3. Li J, Tan J, Dong J. Lightweight design of front suspension upright of electric formula car based on topology optimization method. World Electr Veh J. 2020;11(1):15. https://doi.org/10.3390/wevj11010015
  4. Borda F, La Rosa AD, Filice L, Gagliardi F. Environmental impact of process constrained topology optimization design on automotive component’ life. Int J Mater Form. 2023;16(5):48. https://doi.org/10.1007/s12289-023-01771-2
  5. Tyflopoulos E, Lien M, Steinert M. Optimization of brake calipers using topology optimization for additive manufacturing. Appl Sci. 2021;11(4):1437. https://doi.org/10.3390/app11041437
  6. Ismail AY, Na G, Koo B. Topology and response surface optimization of a bicycle crank arm with multiple load cases. Appl Sci. 2020;10(6):2201. https://doi.org/10.3390/app10062201
  7. Li C, Kim IY, Jeswiet J. Conceptual and detailed design of an automotive engine cradle by using topology, shape, and size optimization. Struct Multidiscip Optim. 2015;51(2):547-564. https://doi.org/10.1007/s00158-014-1151-6
  8. Dao TP. Structural optimization and modelling for a new topology-optimized compliant gripper. Eng Optim. 2026:1-35. https://doi.org/10.1080/0305215X.2026.2625030

Details

Primary Language

English

Subjects

Vehicle Technique and Dynamics

Journal Section

Research Article

Publication Date

September 9, 2026

Submission Date

May 7, 2026

Acceptance Date

August 11, 2026

Published in Issue

Year 2026 Volume: 10 Number: 3

APA
Kopar, M. (2026). Integration of Topology Optimization and ANN-Based Shape Optimization for Weight Reduction of a Control Arm. International Journal of Automotive Science And Technology, 10(3), 630-643. https://doi.org/10.30939/ijastech..1946704
AMA
1.Kopar M. Integration of Topology Optimization and ANN-Based Shape Optimization for Weight Reduction of a Control Arm. IJASTECH. 2026;10(3):630-643. doi:10.30939/ijastech.1946704
Chicago
Kopar, Mehmet. 2026. “Integration of Topology Optimization and ANN-Based Shape Optimization for Weight Reduction of a Control Arm”. International Journal of Automotive Science And Technology 10 (3): 630-43. https://doi.org/10.30939/ijastech. 1946704.
EndNote
Kopar M (September 1, 2026) Integration of Topology Optimization and ANN-Based Shape Optimization for Weight Reduction of a Control Arm. International Journal of Automotive Science And Technology 10 3 630–643.
IEEE
[1]M. Kopar, “Integration of Topology Optimization and ANN-Based Shape Optimization for Weight Reduction of a Control Arm”, IJASTECH, vol. 10, no. 3, pp. 630–643, Sept. 2026, doi: 10.30939/ijastech..1946704.
ISNAD
Kopar, Mehmet. “Integration of Topology Optimization and ANN-Based Shape Optimization for Weight Reduction of a Control Arm”. International Journal of Automotive Science And Technology 10/3 (September 1, 2026): 630-643. https://doi.org/10.30939/ijastech. 1946704.
JAMA
1.Kopar M. Integration of Topology Optimization and ANN-Based Shape Optimization for Weight Reduction of a Control Arm. IJASTECH. 2026;10:630–643.
MLA
Kopar, Mehmet. “Integration of Topology Optimization and ANN-Based Shape Optimization for Weight Reduction of a Control Arm”. International Journal of Automotive Science And Technology, vol. 10, no. 3, Sept. 2026, pp. 630-43, doi:10.30939/ijastech. 1946704.
Vancouver
1.Mehmet Kopar. Integration of Topology Optimization and ANN-Based Shape Optimization for Weight Reduction of a Control Arm. IJASTECH. 2026 Sep. 1;10(3):630-43. doi:10.30939/ijastech. 1946704


International Journal of Automotive Science and Technology (IJASTECH) is published by Society of Automotive Engineers Turkey

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