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Article

Analysis of Dynamic Response Behavior of Crack under Impact Stress Wave

National Engineering Research Center for Equipment and Technology of Cold Rolled Strip, Yanshan University, Qinhuangdao 066004, China
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Academic Editor: Francesco Iacoviello
Metals 2021, 11(12), 1920; https://doi.org/10.3390/met11121920
Received: 31 October 2021 / Revised: 20 November 2021 / Accepted: 25 November 2021 / Published: 28 November 2021
(This article belongs to the Section Metal Failure Analysis)
The structural parts of construction machinery mostly fail due to impact load, but current research on the failure behavior of the impact load has not established a complete theoretical system. Based on wave theory and fracture mechanics, this paper analyzed the wave behavior of shock stress waves and established a model of shock stress wave propagation. Given the dynamic response behavior of the stress and strain field at the crack tip, dynamic fracture mechanics theory was used to solve the dynamic fracture strength stress factor and evaluate the dynamic fracture performance of the structure with crack damage under shock waves. Through dynamic response analysis and numerical calculation of the typical SHPB (split Hopkinson pressure bar) test standard compact tension (CT) specimens under the short-term strong shock stress wave, the stress and strain evolution law of the material under the shock wave was analyzed, and the correlation of the shock stress wave was verified. This research work can meet the requirements of engineering design and has practical engineering significance, playing an important role in material safety design. View Full-Text
Keywords: shock stress wave; crack; dynamic response behavior; wave equation shock stress wave; crack; dynamic response behavior; wave equation
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MDPI and ACS Style

Peng, Y.; Liu, Y.; Zhang, W. Analysis of Dynamic Response Behavior of Crack under Impact Stress Wave. Metals 2021, 11, 1920. https://doi.org/10.3390/met11121920

AMA Style

Peng Y, Liu Y, Zhang W. Analysis of Dynamic Response Behavior of Crack under Impact Stress Wave. Metals. 2021; 11(12):1920. https://doi.org/10.3390/met11121920

Chicago/Turabian Style

Peng, Yan, Yang Liu, and Wei Zhang. 2021. "Analysis of Dynamic Response Behavior of Crack under Impact Stress Wave" Metals 11, no. 12: 1920. https://doi.org/10.3390/met11121920

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