In:
PLOS ONE, Public Library of Science (PLoS), Vol. 16, No. 8 ( 2021-8-5), p. e0255048-
Abstract:
MTS-810 material testing machine and acoustic emission signal analyzer were adopted to explore the mechanical behavior of concrete beams broken by the static load and the nonlinear cumulative damage law of concrete beams broken by fatigue bending from single-stage loading. Then, by introducing the Ramesh Talreja’s Damage Criterion, the damage rule of single-stage loading was extended to the damage accumulation rule under multi-stage loading, and the results were verified by the results of two-stage and three-stage fatigue loading tests. Two main conclusions are achieved: first, affected by four-point bending load, the fatigue life of the concrete specimen is in line with the law of the two-parameter Weibull distribution, namely the higher the stress level is, the shorter the fatigue life is. Second, an obvious nonlinear relationship was discovered in the damage of concrete. The model deduced in this paper and the Palmgren-Miner linear damage accumulation model were adopted to compare the test results of flexural fatigue under single, two and three stage loads. The calculation results of this model were more reliable.
Type of Medium:
Online Resource
ISSN:
1932-6203
DOI:
10.1371/journal.pone.0255048
DOI:
10.1371/journal.pone.0255048.g001
DOI:
10.1371/journal.pone.0255048.g002
DOI:
10.1371/journal.pone.0255048.g003
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10.1371/journal.pone.0255048.g004
DOI:
10.1371/journal.pone.0255048.g005
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10.1371/journal.pone.0255048.g006
DOI:
10.1371/journal.pone.0255048.g007
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10.1371/journal.pone.0255048.g008
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10.1371/journal.pone.0255048.g009
DOI:
10.1371/journal.pone.0255048.t001
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10.1371/journal.pone.0255048.t002
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10.1371/journal.pone.0255048.t003
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10.1371/journal.pone.0255048.t004
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10.1371/journal.pone.0255048.t005
DOI:
10.1371/journal.pone.0255048.t006
DOI:
10.1371/journal.pone.0255048.t007
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10.1371/journal.pone.0255048.t008
DOI:
10.1371/journal.pone.0255048.t009
DOI:
10.1371/journal.pone.0255048.t010
DOI:
10.1371/journal.pone.0255048.t011
DOI:
10.1371/journal.pone.0255048.t012
DOI:
10.1371/journal.pone.0255048.t013
DOI:
10.1371/journal.pone.0255048.t014
DOI:
10.1371/journal.pone.0255048.t015
DOI:
10.1371/journal.pone.0255048.t016
DOI:
10.1371/journal.pone.0255048.t017
DOI:
10.1371/journal.pone.0255048.s001
Language:
English
Publisher:
Public Library of Science (PLoS)
Publication Date:
2021
detail.hit.zdb_id:
2267670-3
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