Study On Mechanical Movement Characteristics Of Middle Weight High Impact Tester

As a major component of national maritime defense forces, the warship in actual combat will inevitably encounter the non-contact explosion attack of various kinds of weapons, such as torpedoes, mines, and deep-sea bombs. This attack is not a direct effect on the ship, but a very complex impact, which is caused by instantaneous shockwave, subsequent bubble pulsation and structured low-frequency shake and so on. When the assault acts on the body of warship, the deformed hull will absorb a portion of impact energy and most of the rest energy is delivered to other devices in the warship, which will make the warship lose combat capability.Therefore, it is necessary to test the warship and its electronic equipment before serving to ensure its safety and reliability. And the most effective and most factual simulation test of attack in the actual combat is to carry out the explosion of warship underwater. However, except the higher cost and extremely inconvenient operation, the test also causes certain environmental pollution. Currently, using various types of shock testers to carry out impact-resistance test is a more extensive method to verify whether they meet the requirements. As a kind of widely used impact testing machines, middle-weight high impact tester can effectively simulate the impact of underwater explosion on warship equipment. In order to simulate the explosion better, it’s crucial to study the mechanical movement characteristics of the impact testing machine. So this article mainly introduces the working principles of middle-weight high impact tester, dynamic mechanical properties in the work and optimizes its design according to the calculation result of the impact test.Firstly, the text has a detailed description and analysis for the work process and mechanical structure of middle-weight high impact tester. To develop targeted dynamic analysis and calculation methods for each work process of the tester. Working process of the testing machine is mainly divided into four steps:the reset of pendulum, the release and freely swing, the impact process, the brake. There are different mechanical movement characteristics in different process. Among them, the impact process is the main object in the study.According to operating characteristics of the impact testing machine, the thesis carries out detailed movement mechanics analysis for the tester, especially for the impact process. As the core part of the tester, the pendulum is the analysis subject. By supporting calculations of computer software MATLAB, it can clearly calculate the effect of the pendulum on the whole experiment process. Finally, this thesis has a summary and conclusion on the analysis results. According to the results, we can optimize the design of the test machine through controlling the pendulum size so as to achieve the goal to control the working effect and reliability of the test.