A simulation method for the fully loaded body of an amphibious vehicle

Abstract

The invention provides a simulation method of a full-loaded body of an amphibious vehicle. The method defines different objective functions by using a typical method, and the full-loaded body system calculated by the optimization process of the algorithm; including the setting of multiple objectives in structural topology optimization, multiple The determination of the target evaluation method, the determination of the structural topology optimization simulation method, and the body structure design based on the optimization results are four necessary design links. The results of the target topology optimization determine the optimal topology of the product. The simulation method of the present invention largely ensures that the size and shape of the design of the amphibious vehicle body structure are carried out under the optimal initial topology form of material distribution, and can greatly improve the utilization rate of materials to determine the optimum load-bearing structural parts of the vehicle body. At the same time, the layout can greatly save design time, and can significantly improve the structural optimization level of the high-speed amphibious vehicle, thereby ensuring the fast, reliable and stable working state of the amphibious vehicle.

Description

technical field [0001] The invention relates to a simulation method of an amphibious vehicle, in particular to a simulation method of a fully loaded vehicle body of an amphibious vehicle. Background technique [0002] A high-speed amphibious vehicle is a high-speed combat vehicle that can pass through water barriers such as rivers, lakes and seas without auxiliary equipment such as pontoons and ferries, and can navigate and shoot on water. The structural design of an amphibious vehicle determines whether the amphibious vehicle can carry out Fight effectively. [0003] At present, two methods are generally used in the body process of high-speed amphibious vehicles. The first method is to determine the boat-shaped outer car shell by means of shape optimization, with the primary goal of reducing wave-making resistance, and to design the body system in the form of screw connection with the frame. , this method is beneficial to the maximum speed prediction and drag reduction and...

AI Technical Summary

Problems solved by technology

But there is no way to help reduce the weight of the vehicle, especially the body system. In view of the boat-shaped car shell, in order to meet the requirements of reducing resistance, the body system needs to increase parts, which increases the weight of the system accordingly. The increase in weight in turn affects Reduced wave-making resistance and increased speed on water

At the same time, the frame structure designed according to the boat-shaped car shell cannot meet the maximum rigidity requirements under static multi-working conditions, the maximum low-order frequency requirements of dynamic vibration, and the safety and reliability requirements for driving under various working conditions on land.

The second method is to refit on the basis of existing vehicles, with weight reduction as the primary goal, remove unnecessary parts on the frame, and apply structural shape optimization and size optimization to reduce the weight of the frame. On this basis, the boat-shaped shell is connected. Although this method reduces the weight, the wave-making resistance cannot be effectively controlled, so the speed on the water cannot reach the ideal level.

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