![]() ![]() Yet, they are not ideal for designing all complex topology structures. The mesh models or parametric models are the two most commonly utilized methods to represent 3D geometries. Nevertheless, the 3D printing technology presents new challenges to the design methodologies of complex topology structures.Ĭomputer-aided design (CAD) technology is an effective tool to design models for 3D printing. In virtue of the 3D printing technology, complex topology structures can even be manufactured with diverse materials. 3D printing, also termed as additive manufacturing, is the state-of-the-art technology to fabricate complex models layer by layer, regardless of the shape geometry. Yet, these methods lack enough control of the final pore features. ![]() Researchers have made several attempts to manufacture complex topology structures by salt leaching, gas-foaming, phase-separation and freeze-drying. Īlthough complex topology structures own scores of advantages, they are difficult to be fabricated by the traditional manufacturing processes. The optimum designed structures can be applied for energy absorbing, sound attenuating, vibration isolating or heat dissipating. Thirdly, the complex topology structures can be adopted to achieve multi-functional targets by means of adjusting the parameters of the structures, such as the pore size, pore shape, porosity or specific surface area. These porous structures can supply plenty of spaces for cells to attach and proliferate. Secondly, due to the similarities with natural structures, the porous features of complex topology structures can be applied as human implants or scaffolds for tissue engineering. The complicated topology brings great benefits to the properties.įirst of all, with the help of large number of holes, the weight of the geometry model can be significantly reduced meanwhile, the consumption of energy, material and manufacturing time can also be decreased. Most of these intricate structures belong to the nonzero genus geometries, which have numerous holes or voids. Complex topology structures, including porous structures, lattice structures, cellular structures, etc. ![]()
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