Protective glass impact simulation method based on Ansys workbench

Abstract

The present invention relates to the field of impact simulation and aims to provide a protective glass impact simulation method based on an Ansys workbench. The method comprises: establishing a three-dimensional simulation model of impact rods and protective glass by use of a Designer model module in Ansys workbench software and transferring the three-dimensional simulation model to a mechanical module, wherein the protective glass is formed by gluing three layers of material, the three impact rods are coaxially and vertically arranged from top to bottom and fall down freely at the same time so as to sequentially impact a same position of the protective glass; performing a simulation operation to obtain a simulation result as an index for measuring impact resistance of the protective glass; and performing simulation calculation for multiple times under a same setting condition, and using a maximal rebounding speed of the uppermost impact rod as an index for measuring the impact resistance so as to determine optimal thickness design. According to the method provided by the present invention, the rebounding speed of the impact rod is creatively utilized to determine an energy adsorption rate of a sample, so that the impact resistance of the sample can be better measured, and laminated structure design of the protective glass is optimized; and by combining a computer numerical simulation method with an actual operation, experimental cost can be lowered.

Description

technical field [0001] The invention relates to an impact simulation method for protective glass based on AnsysWorkbench, 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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