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Acta Mechanica Solida Sinica 2022年第6期35卷 1055-1067页

作者： Jianfei Li Rui Zhang Ran Guo Guohua Li Faculty of Civil Engineering and Mechanics Kunming University of Science and TechnologyKunming650000China

This paper derives the complementary energy functional based on the Voronoi element of particle-reinforced composites containing interphases to compute the interfacial debonding and thermal *** calculating interfacial debonding stress,it is assumed that the surface force is zero at the interface where debonding occurs,and a new modified complementary energy functional is derived with this boundary *** considering the thermal stress due to temperature change,the thermal strain is introduced into the complementary energy functional,and the thermal stress is then *** to the derived formula,a Fortran program named Voronoi cell finite element model(VCFEM)is *** interfacial debonding and thermal stress is calculated using both VCFEM and the finite element software MARC,and the calculation results are *** shows that the calculation results of the VCFEM are roughly comparable to those of the MARC,verifying the effectiveness of the VCFEM.

关键词： Voronoi VCFEM Interphase interfacial debonding Thermal stress

interfacial debonding OF COATED-FIBER-REINFORCED COMPOSITES UNDER TENSION-TENSION CYCLIC LOADING

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Acta Mechanica Sinica 2000年第4期16卷 347-356页

作者：石志飞周利民 School of Civil Engineering Northern Jiaotong UniversityBeijing 100044China Department of Mechanical Engineering The Hong Kong Polytechnic UniversityHong KongChina

A new degradation function of the friction coefficient is *** on the double shear-lag model and Paris formula,the interracial damage of coated- fiber-reinforced composites under tension-tension cyclic loading is *** effects of strength and thickness of the coating materials on the debond stress,debond rate as well as debond length are simulated.

关键词： interfacial debonding cyclic loading coating fiber-reinforced composite

interfacial debonding OF FRC UNDER CYCLIC LOADING

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Acta Metallurgica Sinica(English Letters) 2004年第3期17卷 327-330页

作者： Q.J.Zhu Y.H.Chen J.Chen Department of Civil Engineering Hebei Institute of Technology Tangshan 063009 China School of Civil Engineering Beijing Jiaotong University Beijing 100044 ChinaDepartment of Civil Engineering Hebei Institute of Technology Tangshan 063009 China

With the increasingly use of FRC (fiber-reinforced composite) in urban lifelines, me-chanical properties investigation is very important for disaster resistance, especiallythe investigation of fatigue properties. Based on the shear-lag model, an usual com-posite model under cyclic loading is established. According to the Paris formula, therelationship between interfacial fatigue parameters and the number of cycles is ob-tained under the cyclic loading. Interfocial fatigue properties of this model and thegrowth of the interfacial fatigue crack are analyzed. And the Poisson ratio is consid-ered also.

关键词： interfacial debonding fiber matrix cyclic loading crack growth

A Generalized Self-Consistent Model for interfacial debonding Behavior of Fiber Reinforced Rubber Matrix Sealing Composites

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Journal of Shanghai Jiaotong university(Science) 2017年第3期22卷 343-348页

作者：张斌宇晓明顾伯勤 School of Mechanical Engineering Changshu Institute of Technology Jiangsu Key Laboratory of Recycling and Reuse Technology for Mechanical and Electronic Products Changshu Institute of Technology College of Mechanical and Power Engineering Nanjing Tech University

This paper presents an experimental and numerical study of short-fiber-reinforced rubber matrix sealing composites(SFRC). The transverse tensile stress-strain curves of SFRC are obtained by experiments. Based on the generalized self-consistent method, a representative volume element(RVE) model is established, and the cohesive zone model is employed to investigate the interfacial failure behavior. The effect of interphase properties on the interfacial debonding behavior of SFRC is numerically investigated. The results indicate that an interphase thickness of 0.3 μm and an interphase elastic modulus of about 502 MPa are optimal to restrain the initiation of the interfacial debonding. The interfacial debonding of SFRC mainly occurs between the matrix/interphase interface,which agrees well with results by scanning electron microscope(SEM).

关键词： fiber rubber composites interphase interfacial debonding

THEORETICAL ANALYSIS ON THE LOCAL CRITICAL STRESS AND SIZE EFFECT FOR interfacial debonding IN PARTICLE REINFORCED RHEOLOGICAL MATERIALS

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Acta Mechanica Solida Sinica 1999年第1期12卷 1-8页

作者： Chen Jiankang Huang Zhuping Bai Shulin Peking Univ Dept Mech & Engn Sci Beijing 100871 Peoples R China

The mechanisms of interfacial debonding of particle reinforcedrheological materials are studied. Based on an energy criterion, asimple formula of local critical stress for interfacial debonding isderived and expressed in terms of the interfacial energy. Theparticle size effect on interface debond- ing can then be analyzedeasily owing to the fact that critical stress is inverselyproportional to the square root of particle radius. By takingPP/CaCO_3 system as an example, the present energy criterion iscompared with the mechanical debonding criterion, and it is foundthat under the condition that bond strength is equal to matrixstrength and particle radius not over 0.2μm, the mechanicaldebonding cri- terion can be automatically satisfied if the energycirterion is satisfied.

关键词： particle reinforced rheological materials interfacial debonding energycriterion and mechanical debonding criterion