Characteristics of Stress Field Distribution during Elastoplastic Wave Transmission and Reflection in a Sandwich Bar System

Chengjuan Xie; Wenke Ren; Yiding Wu; Xuan Zhou; Guangfa Gao

Characteristics of Stress Field Distribution during Elastoplastic Wave Transmission and Reflection in a Sandwich Bar System

Authors

Chengjuan Xie School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, China. https://orcid.org/0009-0005-2583-8904
Wenke Ren School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, China. https://orcid.org/0009-0001-9931-942X
Yiding Wu School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, China. https://orcid.org/0009-0001-4151-111X
Xuan Zhou School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, China. https://orcid.org/0009-0009-7910-1288
Guangfa Gao School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, China. https://orcid.org/0000-0002-1729-352X

Abstract

To study the propagation and evolution of one-dimensional elastoplastic waves within the system under rectangular, trapezoidal, and half-sine incident waves, leveraging elastoplastic incremental wave theory and numerical simulation calculations, the research qualitatively investigates the distribution and evolution of the stress field within the specimen, the impact of Bar 2 parameters, and the deformation characteristics of Bar 2 under these three types of incident waves. The findings indicate: Regardingthe overall stress uniformity of Bar 2 during the entire loading phase, the rectangular incident wave is the most effective, while the half-sine and trapezoidal waves are more advantageous for analyzing the stress conditions in Bar 2 during the early loading phase. The diameter and dimensionless density of the specimen significantly influence the stress non-uniformity, showing an approximate negative and positive correlation, respectively.

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Published

2024-03-19

Issue

Vol. 21 No. 4 (2024)

Section

Articles

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