Papers for

computer-aided design software developers

Papers whose findings have a practical use for this group, as judged from the abstract. Open a paper to read what it means in practice.

Topology optimization method improves pressure-actuated compliant mechanisms

A Comparative Study on Robust Topology Optimization of Design-Dependent Pressure-Actuated Compliant Mechanisms with Quadrilateral Elements

Abstract: This paper presents a comparative study of compliant mechanisms generated using a robust topology optimization technique involving design-dependent pressure loads. Design domains are parameterized using standard and higher-order quadrilateral elements. Both eroded and blueprint configurations are considered. A min-max optimization model combined with an output-spring method is employed to extremize the mechanisms' output displacements. A volume and a strain energy constraint are applied to the blueprint and the eroded designs, respectively. The optimization process is executed using the method of moving asymptotes. Numerical experiments are performed to optimize the pressure-actuated inverter and gripper mechanisms using Q4, Q8, and Q9 elements, and the results are compared. The research highlights how quadrilateral element selection influences both the resulting topologies and performance characteristics.

Mon 28 SeptComputational Engineering, Finance, and Science

The gist

Building machines that bend and move precisely using pressure can be tricky because how the pressure applies depends on the shape itself. This paper looks at different ways to break down the design area into small squares or shapes to figure out the best design that works well even if the pressure changes a bit. The researchers tested different types of these shapes and compared the results for two specific machines: one that flips motion and one that grips. They showed that the choice of these design shapes affects the final machine’s structure and how well it performs.

Open → 2609.34341v1