Study On The Method To Optimize Topology Of Framework For Minimum Displacement Based On Truss-like

The development of science and technology ,and the improvement of material properties, are the intrinsic power of modern architecture industry; while life demand is the external factors. The structural topology optimization emerges in scientific upsurge, increasingly becomes hot spot of structural mechanics research. Truss-like continuum material model-based topology optimization method collects a variety of the merits, which is the core theory of this paper.The Truss-like continuum topology optimization is studied by using orthogonal anisotropic materials model, which well avoid various numerical unstable phenomenon, and make topology structure easy to express and analysis. According to this method, the frame structures with displacement constraints for single load case are optimized. The optimization targets are the support system in the frame. The densities and orientations at the nodes in the material distributive field are taken as design variables. Material model and its corresponding elastic matrix and stiffness matrix are developed,and the structural topology is given by a few iteration based on finite element analysis. Different examples are presented to demonstrate the optimal layout of various frame support in single load case. Meanwhile, the results in multi-load cases are given initially.To illustrate the superiority of frame structures topology optimization based on the truss-like Continuum with displacement constraints, the topological structure and common framework supporting structure are optimized for size using ANSYS analysis software. In the Optimization process, structural weight is used as objective function, the section size of beams are taken as design variables, and the design value of material strength as state variables. Results show that, for different forms of frame structure, the support of the topological optimization results have good engineering effect.Reasonable support system can be very good to improve the overall rigidity and ability of anti-lateral sway of frame structure, The comparison of results shows that the support system of the topological optimization results not only can do this, but the role it plays is far superior to other forms of support system.In short, the results of this study do well in controlling the lateral sway of frame structure, and save the materials effectively, which undoubtedly has good innovation significance and broad prospects in this field.