Topological Optimization of Spatial Indexing Mechanisms Based on Nonlinear Characteristics

For the lightweight design of the space station transfer mechanism with nonlinear characteristics, a structural/mechanism topology optimization method considering nonlinear characteristics was established, and the force-displacement curve was obtained by simulating the static test process. The equivalent stiffness of the nonlinear structure was extracted according to a specific principle, which could match the test results well. The topology optimization analysis and weight reduction design of the intermediate bracket of the space station transfer mechanism were carried out using the method of Solid Isotropic Material with Penalization (SIMP), and the structure was reduced by 24%, achieving the goal of lightweight design for the space station transfer mechanism. This shows the effectiveness of the analysis method. The topology optimization method established for the lightweight design of the space station transfer mechanism with local nonlinear characteristics provides a solution for the lightweight design of other nonlinear structure mechanisms, and also provides a reference for other nonlinear structure mechanisms. As the demand for advanced materials and structures with improved performance continues to grow, the topology optimization method established for the space station transfer mechanism will serve as a valuable tool for engineers working in various fields. For example, it can be applied to the development of lightweight automobiles, aircraft, and spacecraft, as well as to the design of renewable energy systems, robotics, and other advanced technologies. By incorporating the method into their design processes, engineers can create more innovative and efficient products that will help to drive progress and advancements in these industries. In conclusion, the topology optimization method developed for the lightweight design of the space station transfer mechanism with local nonlinear characteristics has demonstrated its effectiveness and versatility in addressing complex engineering design challenges. By providing a systematic approach to the design process that considers both structural and mechanical properties, this method has the potential to impact various industries and applications, contributing to the development of more advanced and sustainable structures and mechanisms for years to come.