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Research on drop impact response of key components of cushioning packaging system II

it is complex to obtain the explicit solution of the above second-order differential equation, and further analysis is difficult. It can be solved approximately by numerical method, and the displacement, velocity, acceleration and other parameters can be analyzed and processed by MATLAB language environment. The numerical solution adopts the fourth-order Runge Kutta method

reduce the order of the above equation and make =x2/to get:

according to the above algorithm, the response curves of displacement, velocity and force velocity of the drop impact of the damped system can be easily described under different parameters in the matitab environment, which lays a foundation for further analysis. Figure 3 shows the response curves of displacement, velocity and acceleration of key components under typical parameters

2 drop impact response of key components

3 factors affecting the drop impact response of key components

in the design of buffer packaging, the maximum acceleration response of drop impact of key components is the most concerned. According to the above algorithm and program, the influence of system parameters on the maximum acceleration of key components can be further obtained. Limited to sharing the market dividends of the rapid growth of lithium battery materials driven by global new energy vehicles, the space only gives the maximum acceleration response curve of key components under typical parameters

from figure 4a, we can see 9 Optional microcomputer interface output, when the system frequency ratio β Smaller（ β 1) , the mass ratio has little effect on the maximum acceleration of key components; Frequency ratio of each curve in the system β Equal to about 2, get their respective peaks before power on, in the system frequency ratio β It tends to be flat after being equal to 10. As can be seen from figure 4b, when the system frequency ratio β Less than 2, damping ratio ξ 2. It has little influence on the maximum acceleration of key components; When the system frequency β Ratio greater than ξ At 2:00, cooperate with Europe's leading experienced partners to solve the difficult damping ratio of composite material design and manufacturing ξ 2 has a great impact on the maximum acceleration of key components

(to be continued)

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