Understand the performance and design rules of 3D printed dot matrix structures
Cell structure is an important research field in additive manufacturing. Just like the hollow bricks used in construction, the application of cells reduces the use of materials and effectively helps to achieve lightweight. Four common cell structures include honeycomb, open cell foam, closed cell foam and lattice structures. Dot matrix materials have received attention due to their advantages in thermal, electrical and optical properties, as well as potential lightweight materials. The dot matrix structure opens a door for the different appearance and performance of the components. The inherent complexity of the lattice structure allows the additive manufacturing/ 3D printing technology to have a natural bond with its manufacture. One of the great advantages of 3D printing is that flexibility and printing costs are not sensitive to product complexity, which is the main reason why complex dot matrix structures have become a hot research direction in 3D printing. When using 3D printing technology as the manufacturing method of the lattice structure, the designer can release and explore the function and potential of the lattice structure to improve the performance of the product. At the same time, the design of the lattice structure can also encourage designers to rethink the performance required of the parts to explore more design space. Combination of structure and function Dot matrix structures such as bones and metal crystals can be found everywhere in nature. In the product design, the use of lattice mechanical performance, such as large surface area, excellent shock absorption performance, impact protection, etc., can overcome the limitations of traditional manufacturing, create new, higher performance products. Excellent strength-to-weight ratio There are usually two ways to improve the strength-to-weight ratio of the part. In traditional manufacturing, the use of materials is reduced by reducing materials in non-critical areas to reduce weight. The dot matrix design can simultaneously reduce the material in critical areas of the part to reduce weight, which sometimes reduces the overall strength of the part, but increases the strength-to-weight ratio. Extra large surface area The lattice structure material is not only lightweight, but also releases a large amount of surface area, which promotes heat exchange and chemical reactions. The dot matrix structure can significantly increase the effective surface area, and if the radiator is filled with cold air, it can also quickly remove heat. Taking computer heat exchangers as an example, the performance of computer processors is often affected by the heat generated. The heat exchanger works by removing the heat from the chip and discharging it to the atmosphere with the help of a fan. The overall efficiency is closely related to the surface area of ​​the heat sink. However, without 3D printing technology, it is difficult to achieve a "small" feature with a large surface area. At present, attempts have been made to improve heat exchange efficiency from the automotive, aerospace, energy to electronics industries. For example, according to market research, UTC joint technology has designed a lattice structure within its gas turbine engine components that provide effective local convection cooling for gas turbine engine components, allowing components to withstand thermal combustion through the core flow path. The high temperature of the gas. These lattice structures can be produced by powder bed laser melting 3D printing technology and can also be produced by electron beam melting (EBM) processes. Due to the presence of the lattice structure, the engine maintains a wide range of heat exchange surfaces, resulting in a higher heat sink surface/volume ratio. Excellent shock and impact protection Dot matrix structure sports shoes midsole, image source: Carbon Dot matrix can also protect products by better absorbing energy. For example, the sneaker midsole and the football helmet cushioning structure with a small array structure can absorb the impact force to protect the safety when subjected to an external force. A great addition to any Garden or yard, our St. Francis Bird Feeder statue captures the warmth and compassionate nature of the saint and immortalizes his love for his feathered and furry friends. Sprinkle some seed into the bowl in St. Francis's hand and it will attract colorful birds of all sizes to your garden. Made of durable polyresin and finished with a distressed look to last indefinitely outdoors. Measures 26" tall.
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