Browse Publications Technical Papers 2020-28-0389
2020-09-25

Topology Optimization of Landing Gear for Additive Manufacturing 2020-28-0389

In the pioneering sectors of design and development of industry have looked upon computer integrated solutions for product development. Especially in aerospace industry, which demands for reduced development cycles and prototyping iterations. In this research, topology optimization is used as a design tool in the development phase of a component. An efficient methodology is developed based on topology optimization for regeneration of a tertiary components. Topology optimization aims to find an ideal structural configuration within the given design domain with various constraints, objectives, and boundary conditions. The topology optimization approach employed in this research was divided into three main stages: modelling, optimization and regeneration. The first stage, modelling involved the making of CAD model of a sub assembly of landing gear, in particular the slave link assembly to test the feasibility of the methodology. Optimization stage of research required finite element analysis to be performed on the sub assembly, which was used as the basis for topology optimization. The topology optimization work is carried out in the software ANSYS. The regeneration stage of process involved the redesigning of components based on the result of optimization stage and finite element analysis under same constraints to validate its structural functionality. The design process encompassed two redesign of slave link assembly. The first approach resulted in 37 % and 31 % mass reduction for upper and lower slave links, with higher stress development in components due to close replication of topology results. The second redesign approach aimed to provide improvement in the structural configuration of sub assembly by introducing a mesh structure in design to support the large vacant slots under high load scenarios. The second design approach yielded mass reduction by 40 % and 32 % for upper and lower slave link.

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