Figure 1 shows that when the TV housing is supporting the picture tube, the force is usually m(g+a), where m is the mass of the picture tube, g is the acceleration of gravity, and a is the assumed acceleration. Given the initial design of the TV housing, the finite element method is used to calculate the stress distribution, the total weight of the casing is fixed, and the design structure is continuously improved so that the stress distribution is reasonable. The goal is to maximize the load capacity of the casing. As shown in the figure, the convex ribs are locally added instead of the original plate; the thickness of the plates varies depending on the stress distribution.
For a well-designed TV enclosure, analog drop tests are also performed to analyze the experimental results and continuously improve the design so that the design can be optimized. Adopting such an analysis means that the design effect is obvious. For example, the design of a light vehicle in Japan is also carried out in this way, which not only saves the material of the car shell, but also protects people's life safety as much as possible in the event of an impact. The block diagram of the design process is shown in Figure 2.
The buffer material is mainly used to buffer the product between the packaged product, the transportation environment, and the loading and unloading environment. When designing cushioning materials, it is necessary to fully understand the circulation environment that the product and its packaging must undergo. From the point of view of product damage, the circulation environment mainly includes drop and drop during loading and unloading, transportation vibration, and stack pressure loss. The possible destructive power of the circulation environment for the product is defined as A, and the destructive power of the circulation environment where the end package's crystal can withstand is defined as B. Then the difference between A and B should be the part that the packaging design (carton and cushioning material) bears. It is ideal if the product can be properly protected against the circulation environment. However, if you do not optimize the packaging design, there may be two problems. One is the lack of product protection, which may cause product damage in circulation. At this time, it is necessary to systematically analyze the product and its packaging, and jointly solve the problem of insufficient packaging by increasing product strength and improving packaging design; the second is Excessive protection of products, under such circumstances, the excess packaging material will increase the overall cost of the product, resulting in waste and deepen the degree of environmental pollution, must also be solved by optimizing the packaging design.
As shown in Figure 3, the background portion represents the destructive power of the circulation environment, and the product has a certain strength to withstand this destructive force, but it cannot be fully accepted. The role of packaging protection is to make up for the lack of product strength, and together with the product to withstand the test of the circulation environment. There are 4 kinds of situations in the picture. The first case on the top is the ideal package for general design products. The difference between the product strength and the disruption of the circulation environment happens to be supplemented by packaging. In the second case, there is insufficient packaging and the products in circulation. The probability of damage is higher; the third situation is overpackaging, which will increase the cost of packaging and the waste of packaging materials. The fourth situation is to optimize the design of the product structure and improve the strength of the crystal itself. With proper packaging, this case uses the least amount of packaging material (buffering material).
According to the characteristics of the product and the environmental conditions of the circulation, a proper amount of buffer material can be determined through various test methods, which can not only protect the product, but also save the buffer material and reduce the packaging cost. For example, software analysis and simulation experiments are required for packages. The widely used software [3] in Japan includes impact resistance analysis software (PAM-SHOCK/NT) and drop simulation software (MSC/DropTest). Through software analysis and analysis of experimental results, the design was repeatedly modified. The goal was to meet the requirements of packaging, and the minimum amount of packaging materials was used. For product manufacturers, despite the use of 3D CAD, optimization design and other software, there must be financial and human input, but due to the saving of buffer materials, this part of the cost can be quickly recovered, and it will not only bring new benefits to the company in the future. Contributing to environmental protection will also bring social benefits.
3 Conclusion In summary, at the same time of the development and design of new products, considering the problems of product packaging design, optimizing the product structure, and improving the product's ability to withstand the destructive power of the circulation environment, it is possible to reduce the packaging materials (buffering materials). The amount of use, reduce packaging costs, but also reduce the environmental pollution of packaging waste. With the development of product CAD design technology and packaging optimization technology, the overall optimization design method for products and packaging will be further improved.
For a well-designed TV enclosure, analog drop tests are also performed to analyze the experimental results and continuously improve the design so that the design can be optimized. Adopting such an analysis means that the design effect is obvious. For example, the design of a light vehicle in Japan is also carried out in this way, which not only saves the material of the car shell, but also protects people's life safety as much as possible in the event of an impact. The block diagram of the design process is shown in Figure 2.
The buffer material is mainly used to buffer the product between the packaged product, the transportation environment, and the loading and unloading environment. When designing cushioning materials, it is necessary to fully understand the circulation environment that the product and its packaging must undergo. From the point of view of product damage, the circulation environment mainly includes drop and drop during loading and unloading, transportation vibration, and stack pressure loss. The possible destructive power of the circulation environment for the product is defined as A, and the destructive power of the circulation environment where the end package's crystal can withstand is defined as B. Then the difference between A and B should be the part that the packaging design (carton and cushioning material) bears. It is ideal if the product can be properly protected against the circulation environment. However, if you do not optimize the packaging design, there may be two problems. One is the lack of product protection, which may cause product damage in circulation. At this time, it is necessary to systematically analyze the product and its packaging, and jointly solve the problem of insufficient packaging by increasing product strength and improving packaging design; the second is Excessive protection of products, under such circumstances, the excess packaging material will increase the overall cost of the product, resulting in waste and deepen the degree of environmental pollution, must also be solved by optimizing the packaging design.
As shown in Figure 3, the background portion represents the destructive power of the circulation environment, and the product has a certain strength to withstand this destructive force, but it cannot be fully accepted. The role of packaging protection is to make up for the lack of product strength, and together with the product to withstand the test of the circulation environment. There are 4 kinds of situations in the picture. The first case on the top is the ideal package for general design products. The difference between the product strength and the disruption of the circulation environment happens to be supplemented by packaging. In the second case, there is insufficient packaging and the products in circulation. The probability of damage is higher; the third situation is overpackaging, which will increase the cost of packaging and the waste of packaging materials. The fourth situation is to optimize the design of the product structure and improve the strength of the crystal itself. With proper packaging, this case uses the least amount of packaging material (buffering material).
According to the characteristics of the product and the environmental conditions of the circulation, a proper amount of buffer material can be determined through various test methods, which can not only protect the product, but also save the buffer material and reduce the packaging cost. For example, software analysis and simulation experiments are required for packages. The widely used software [3] in Japan includes impact resistance analysis software (PAM-SHOCK/NT) and drop simulation software (MSC/DropTest). Through software analysis and analysis of experimental results, the design was repeatedly modified. The goal was to meet the requirements of packaging, and the minimum amount of packaging materials was used. For product manufacturers, despite the use of 3D CAD, optimization design and other software, there must be financial and human input, but due to the saving of buffer materials, this part of the cost can be quickly recovered, and it will not only bring new benefits to the company in the future. Contributing to environmental protection will also bring social benefits.
3 Conclusion In summary, at the same time of the development and design of new products, considering the problems of product packaging design, optimizing the product structure, and improving the product's ability to withstand the destructive power of the circulation environment, it is possible to reduce the packaging materials (buffering materials). The amount of use, reduce packaging costs, but also reduce the environmental pollution of packaging waste. With the development of product CAD design technology and packaging optimization technology, the overall optimization design method for products and packaging will be further improved.
[ references]
[1] Peng Guoxun, et al. China's packaging industry development policy research [J]. Packaging Engineering, 2002, 1(6).
[2] Li Bingwei. Structural optimization design [M]. Beijing: China Communications Press, 1989
[3] Heng Chuanwu. 21st Century 㸠㮠packaging [J]. Heng Chuanwu's Earthbag Cultivation Technique (E-Journal), 2001, 5(1).
(Finish)
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