Structural Optimization Design of Air Conditioning Sheet Metal Parts
2023-09-27 09:38
Nowadays, with the rapid development of the national economy, people's demand for air conditioning is increasing. However, in the fierce market competition environment, the profits of air conditioning have shown a clear downward trend. Therefore, how to reduce the production cost of air conditioning and improve the profit margin of air conditioning has become the first problem to be solved. In air conditioning, as its main support, the air conditioning sheet metal parts account for a large proportion of both transportation and material costs. Therefore, optimizing the design in this area has become an effective control measure.
Structural Optimization Design of Air Conditioning Sheet Metal Components
When optimizing the structural design of air conditioning sheet metal parts, many design parameters are often adjusted, and different adjusted parameters will have different impacts on the structure. Therefore, it is necessary to select and adjust the parameters. Specifically, mechanism optimization design can be carried out from the following two aspects:
1. Basic process of structural optimization design for air conditioning sheet metal components
In the process of structural optimization design, different choices of design parameters, i.e. design variables, will have different impacts on the results. From this, it can be seen that the selection of design variables is particularly important. From past experience, it is not difficult to find that using sensitivity analysis improves the selection of design variables, while effectively improving the accuracy and efficiency of optimizing structures.
Sensitivity analysis of structural optimization design for air conditioning sheet metal components
Sensitivity analysis of structural optimization design can generally be divided into two methods: the variation of dependent variables/independent variables. Overall, sensitivity clearly exists as derivative information and is a response to the rate of change in structural characteristics caused by design variables and parameters. Therefore, sensitivity is very important in structural modification and optimization design.
In addition, in the interactive computer-aided design process, relevant designers can also rely on sensitivity information to change their structure. It should be noted that in this process, the derivative of the structural response value to the design variable is usually calculated. By taking derivatives, determine the sensitive parts of the structure and obtain the required sensitivity coefficients and design parameters.
Establishment of finite element model for air conditioning sheet metal components
In this section, it can be roughly divided into two parts, namely the introduction of CAD models and the establishment of process supplements. Specifically, to establish a simulation of the substrate stamping process, it is necessary to first establish a geometric model of the DP23 substrate. However, in some complex parts, the establishment of their models requires a CAD system, which is then transferred to analysis software to achieve the establishment of three-dimensional models. In terms of establishing process supplementary surfaces, it mainly refers to extracting the intermediate surfaces of the imported CAD model, filling process holes or meshing the finite element to determine the stamping direction. When determining the drawing direction, it is necessary to conduct in-depth analysis of the following points, namely: whether the drawing die matches the drawing punch. Ensure that the pull-in angle of the convex mold is equal relative to both sides, and ensure that the contact between the concave mold and the blank is as stable as possible. The pulling depth should be kept small and the overall pulling depth should be uniform. During the contact process, it is necessary to ensure that they come into contact simultaneously, with a large contact area and concentration. It should be noted that during the stretching process, the direction of stretching should be as consistent as possible to prevent cracking or wrinkling. In addition, the tensile direction directly affects the plastic deformation ability of the material.
In summary, with the
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Reasons and Solutions for Edge Burning of Popular Laser Cutting Machines Used by Automobile Charging Cabinet Sheet Metal Manufacturers Reasons and solutions for edge burning in laser cutting machines Today, the sheet metal manufacturer of car charging cabinets will share with you the reasons and solutions for the edge burning of popular laser cutting machines. I hope the following content can help everyone. Car charging cabinet sheet metal manufacturer: analysis of the reasons for edge burning of metal laser cutting machines The reason for edge burning and slag sticking in laser cutting of sheet metal parts: When laser cutting sheet metal parts, a large amount of heat is generated. Generally, the heat generated by cutting will diffuse along the slit into the processed metal plate, obtaining sufficient cooling. When metal laser cutting machines process small holes, the outside of the hole can be fully cooled, but the heat diffusion space inside a single hole is small, and the heat energy is too concentrated, leading to phenomena such as overburning and slag hanging. In addition, in thick plate cutting, the molten metal and heat accumulated on the material surface during perforation can cause auxiliary airflow disorder and excessive heat input, leading to overburning. Car charging cabinet sheet metal manufacturers: How to solve the problem of burning edges and slag hanging Solution to overburning in laser cutting of carbon steel holes: In carbon steel cutting with oxygen as the auxiliary gas, the key to solving the problem lies in how to prevent the generation of oxidation reaction heat. When piercing, auxiliary oxygen cutting is used, and after a delay, auxiliary air or nitrogen cutting is used. This method can process holes in 1/6 thick plates. Pulse cutting conditions with low frequency peak output power can reduce heat output and help optimize cutting conditions. Setting the conditions as a single pulse laser beam, high energy intensity, and low frequency peak output can effectively reduce the accumulation of molten metal on the material surface during the perforation process, effectively stopping heat output. Solution for laser cutting of aluminum alloy and stainless steel: In the processing of such materials, nitrogen gas is used as the auxiliary gas, and there will be no burning phenomenon during cutting. However, due to the high temperature of the material inside the small hole, the phenomenon of internal slag hanging will be more frequent. An effective solution is to increase the pressure of the auxiliary gas and set the conditions to high peak output and low-frequency pulse conditions. When using air as the auxiliary gas, just like when using nitrogen, there will be no overburning, but bottom slagging is easy to occur. Therefore, it is necessary to set the conditions to high auxiliary gas pressure, high peak output, and low-frequency pulse. The above is the reason and solution for laser cutting machine edge burning explained by the sheet metal manufacturer of the car charging cabinet. Do you all understand? If you want to learn more about relevant knowledge, please feel free to contact our automotive charging cabinet sheet metal manufacturer. We will wholeheartedly serve you and hope that the knowledge explained above can help you. Thank you for your patience in watching and wish you a happy life.
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