The impact simulation method of protective glass based on ansys workbench

Abstract

The invention relates to the field of impact simulation and aims to provide an impact simulation method for protective glass based on Ansys workbench. Including: use the Designer model module in Ansys workbench software to establish a 3D simulation model of the impact rod and protective glass and transfer it to the mechanical module; the protective glass is made of three layers of materials, and the three impact rods are coaxial and vertical from top to bottom At the same time, the free fall impacts the same position of the protective glass in sequence; the simulation results are obtained as a measure of the impact resistance performance index of the protective glass; multiple simulation calculations are performed under the same setting conditions, and the maximum The rebound speed is used as an index to measure the impact resistance, so as to determine the optimal thickness design. The present invention creatively uses the rebound velocity of the impact bar to determine the energy absorption rate of the sample, which can better measure its impact performance and optimize the design of the laminated structure of the protective glass; by combining the method of computer numerical simulation with actual operation, the experimental data can be reduced. cost.

Description

technical field [0001] The invention relates to an impact simulation method for protective glass based on Ansys Workbench, belonging to the field of impact simulation. Background technique [0002] As a special glass with the ability to protect against various attacks, protective glass is an important security means related to people's safety, and has been widely used in politics, military, national defense, economy and other fields. With the development of social economy and the continuous improvement of people's security awareness, protective glass has begun to penetrate into all aspects of social life, and the demand for civilian protective glass is growing. The existing protective glass is divided into several types such as tempered glass, laminated glass, and film glass. Among them, laminated glass is the most important and has the widest range of applications. Laminated glass often uses different adhesives such as polyurethane (PU) and polyvinyl butyral (PVB) to bond...

AI Technical Summary

Problems solved by technology

However, there are too few experiments on the mechanical properties of protective glass, especially ultra-thin protective glass, and it is impossible to form a systematic design database, and it is difficult to meet the requirements of guiding the structural design of protective glass and optimizing related parameters.

[0003] During the test, the test installation of large flat protective glass is troublesome, and for large protective glass, the general impact device on the market cannot meet the conditions

Secondly, the clamping brackets involved in the relevant specifications are too simple, difficult to process, and the cost is too high. The human factors in the operation are greatly affected, which reduces the accuracy and credibility of the experiment.

Finally, the materials of the layers in laminated glass are not the same, making it difficult to analyze the ability of the layers to resist impact

More importantly, in order to obtain accurate results, each impact performance test needs to be repeated many times, which causes a great waste of materials and costs

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