Yield and failure theory for unidirectional polymer-matrix composites

Yanfei Chen; Yunong Zhao; Chunwang He; Shigang Ai; Hongshuai Lei; Liqun Tang; Daining Fang

doi:10.1016/j.compositesb.2019.01.071

Yield and failure theory for unidirectional polymer-matrix composites

Yanfei Chen, Yunong Zhao, Chunwang He, Shigang Ai^*, Hongshuai Lei, Liqun Tang, Daining Fang

^*Corresponding author for this work

Institute of Advanced Structure Technology

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

This paper presents a unified theory of yield and failure criteria for unidirectional polymer-matrix composites (UD PMCs). This interactive unified theory considers the effect of normal stress on the shear strength by introducing a coupling term (q ₃ σ ₂₂ |τ ₂₁ |). The coefficient q ₃ of the coupling term is an empirical value and equals to 0.2. The predictions of the unified theory are well agreeable with present and existing experiments. Furthermore, Tao theory has been improved by adding the limiting condition that the ratio of compressive strength to shear strength should be greater than two.

Original language	English
Pages (from-to)	612-619
Number of pages	8
Journal	Composites Part B: Engineering
Volume	164
DOIs	https://doi.org/10.1016/j.compositesb.2019.01.071
Publication status	Published - 1 May 2019

Keywords

Failure
Polymer-matrix composites
Unified theory
Yield

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10.1016/j.compositesb.2019.01.071

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title = "Yield and failure theory for unidirectional polymer-matrix composites",

abstract = " This paper presents a unified theory of yield and failure criteria for unidirectional polymer-matrix composites (UD PMCs). This interactive unified theory considers the effect of normal stress on the shear strength by introducing a coupling term (q 3 σ 22 |τ 21 |). The coefficient q 3 of the coupling term is an empirical value and equals to 0.2. The predictions of the unified theory are well agreeable with present and existing experiments. Furthermore, Tao theory has been improved by adding the limiting condition that the ratio of compressive strength to shear strength should be greater than two.",

keywords = "Failure, Polymer-matrix composites, Unified theory, Yield",

author = "Yanfei Chen and Yunong Zhao and Chunwang He and Shigang Ai and Hongshuai Lei and Liqun Tang and Daining Fang",

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doi = "10.1016/j.compositesb.2019.01.071",

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T1 - Yield and failure theory for unidirectional polymer-matrix composites

AU - Chen, Yanfei

AU - Zhao, Yunong

AU - He, Chunwang

AU - Ai, Shigang

AU - Lei, Hongshuai

AU - Tang, Liqun

AU - Fang, Daining

PY - 2019/5/1

Y1 - 2019/5/1

N2 - This paper presents a unified theory of yield and failure criteria for unidirectional polymer-matrix composites (UD PMCs). This interactive unified theory considers the effect of normal stress on the shear strength by introducing a coupling term (q 3 σ 22 |τ 21 |). The coefficient q 3 of the coupling term is an empirical value and equals to 0.2. The predictions of the unified theory are well agreeable with present and existing experiments. Furthermore, Tao theory has been improved by adding the limiting condition that the ratio of compressive strength to shear strength should be greater than two.

AB - This paper presents a unified theory of yield and failure criteria for unidirectional polymer-matrix composites (UD PMCs). This interactive unified theory considers the effect of normal stress on the shear strength by introducing a coupling term (q 3 σ 22 |τ 21 |). The coefficient q 3 of the coupling term is an empirical value and equals to 0.2. The predictions of the unified theory are well agreeable with present and existing experiments. Furthermore, Tao theory has been improved by adding the limiting condition that the ratio of compressive strength to shear strength should be greater than two.

KW - Failure

KW - Polymer-matrix composites

KW - Unified theory

KW - Yield

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U2 - 10.1016/j.compositesb.2019.01.071

DO - 10.1016/j.compositesb.2019.01.071

M3 - Article

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SN - 1359-8368

VL - 164

SP - 612

EP - 619

JO - Composites Part B: Engineering

JF - Composites Part B: Engineering

ER -

Yield and failure theory for unidirectional polymer-matrix composites

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Keywords

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