Zhai Huatao,Ye Wenkang,Fu Minghui,et al.Design and loading performance of four types of pulse loading devices[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2026,65(04):67-74.
Zhai Huatao,Ye Wenkang,Fu Minghui,et al.Design and loading performance of four types of pulse loading devices[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2026,65(04):67-74.DOI: 10.11714/acta.snus.ZR20260069.
Design and loading performance of four types of pulse loading devices
Existing low-strain-rate dynamic loading devices are generally characterized by complex structures and high costs, while pulse loading modes other than compression remain underdeveloped. To address these issues, this paper proposes four novel low-strain-rate pulse loading devices, which cover tensile, compressive, tensile-compressive mixed, and impact loading modes. Their working principles are systematically elaborated, the pulse loading performance of the four types of devices is verified through experiments, and the regulation laws of pulse waveforms are analyzed and summarized. The results demonstrate that: 1) All four devices can achieve the corresponding pulse loading; the amplitude of the output tensile pulse is proportional to the falling height of the weight, and the pulse width is proportional to the elasticity of the thin string; 2) The amplitudes of the output compressive and tensile-compressive mixed pulses of the four devices are proportional to the exciter voltage, while the pulse width is inversely proportional to the operating frequency; 3) The impact pulse velocity output by the four devices is proportional to the spring compression amount. This research enriches the types of low-strain-rate dynamic loading devices and provides a low-cost, precise, and adjustable experimental method for research in related fields.
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